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55Instructables1,549,918Views3,338CommentsEuropeJoined February 14th, 2009
I am a physician by trade. After a career in the pharmeceutical world I decided to take it a bit slower and do things I like. Other than my hobbies that involves grassroots medicine in S.E.&P Asia. I have built low income cow dung bio-reactors, solar lamps and family fish ponds as well as houses out of every kind of thinkable material. Instructables is an endless source of inspiration for my projects.

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  • diy_bloke commented on braserito66's instructable ESP8266 Wifi Thermostat for Freezer2 hours ago
    ESP8266 Wifi Thermostat for Freezer

    Seems downloading of yr program keeps failing

    Seems downloading of yr program keeps failing

    View Instructable »
  • diy_bloke commented on kinasmith's instructable Compost Sensor1 day ago
    Compost Sensor

    Excellent. I made something similar with a DS18b20 and an ESP8266, but I guess for larger distances you need the RFM69 as you have.I have chosen the DS18B20 coz I had a few, but a good ntc is probably just as accurate enough and certainly for compost.Though there are 'waterproof' NTC's and DS19B20 (basically the said element in a tiny metal tube) I made an insulated casing myself as I didnt want to run the risc that the commercial ones wouldnt last long enough.Data goes to Openhab and Thingspeak, the latter mainly for storage and graphs

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  • diy_bloke commented on Reichenstein7's instructable Arduino Modules - Flame Sensor4 days ago
    Arduino Modules - Flame Sensor

    a bit late, but maybe someone else is helped with it. Look here under wiring diagram http://learn.linksprite.com/arduino/advanced-learning-kit-for-arduino/experiment-13-detect-fire/

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  • Omnik Inverter Off It's Cloud and on My MQTT

    All in all looks like a great device

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  • diy_bloke commented on diy_bloke's instructable Arduino Controlled Light Dimmer5 days ago
    Arduino Controlled Light Dimmer

    Well... I am not saying that per se. There are some advantages of a 3Q triac, especially if you are using inductive loads: ringing caused by sudden turn-off could possibly turn on a 4-quadrant triac, necessitating snubbers and other protection means to prevent spurious conduction. A 3Q TRIAC would make that unnecessary. But I actually never tested a 3Q. You will find many BTA200 series (BTA200,201-212) to be 3Q, but I never used those. But they may work very well with conductive loads

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  • Omnik Inverter Off It's Cloud and on My MQTT

    I like MQTT Dash, but have not really seen much graphics on it yet. Ideas are never lacking, it is time that is lacking ;-)

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  • Simple and Cheap Fuse Doctor for Attiny

    Let me add that I built it also for an attiny that wouldnt flash without me having the foggiest why. Turned out to be a fuse i had no idea I had set

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  • Omnik Inverter Off It's Cloud and on My MQTT

    Pretty good. Quite some work figuring that all out.I don't like those proprietary services either. For one you don't know what is happening with your data and secondly what to do when the manufacturer (and its Cloud) go belly up.Itead I think does the best of both worlds: for the people who just want an easy solution, they have their cloud and for everyone else they make reflashing easier.Omnik and other manufacturers should take that as example.Great graph by the way is that a private application/dashboard or is it OpenEnergyMonitor?

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  • diy_bloke commented on diy_bloke's instructable 433 MHz Coil Loaded Antenna1 week ago
    433 MHz Coil Loaded Antenna

    Ben, Thanks. That design changed my 433 world. When i was just using the 1/4 wave whip antenna, I couldnt do anything serious with those cheap transmitters and then I found your design: BIG difference and I mean BIG!!!!.I trust I gave you enough credit :-).I am slowly moving away from 433 in favour of the Wemos... but I just seamlessly shifted my existing 433 infrastructure into Openhab with a simple MQTT-433 Gateway, again with your antenna. Even at 3 Volt there is considerable reach with the el cheapo transmitters, yet I use it at 5Volt, but may try 9Volt.Thanks again for your design

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  • Smart Home - Arduino Trash Indicator With BLE

    Nice. One could argue that it is crazy to do this as you will just see how much is in the bin every time you open it, but I just smartalized a simple moustrap so i get a mail when a mouse is cought ;-).Now the only thing left is to signal a robot to take the trash out ;-)Anyway, seriously, I have seen a system once in which the Trashbin (the big ones outside that get collected) take themselves from the house to the street on collection day via a railsystem.As there are usually costs connected to the pick up, it would pay to have this type of device included to prevent the trash taking itself out if the bin wasnt optimally full

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  • diy_bloke commented on diy_bloke's instructable 433 MHz Coil Loaded Antenna2 weeks ago
    433 MHz Coil Loaded Antenna

    That is good to hear. Thank you for the feedback

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  • diy_bloke commented on ensarlevent's instructable SMART MINI GREENHOUSE2 weeks ago
    SMART MINI GREENHOUSE

    Have fun. :-)"Airquality"as such might not be so important in a green house, but if that is what you were looking for, the 135 is a good sensor.Should you want to extract CO2 from your measurements... various sites describe that http://davidegironi.blogspot.nl/2014/01/cheap-co2-...

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  • Simple and Cheap Fuse Doctor for Attiny

    Happy I/my instructable could be of help :-)

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  • diy_bloke commented on rabbitcreek's instructable Weather Portal2 weeks ago
    Weather Portal

    Like this:

    For ZWM code: Use"http://autocomplete.wunderground.com/aq?query=yourtown"and then check the resulting json under 'l'

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  • diy_bloke commented on zposner's instructable Mechanical Iris Door2 weeks ago
    Mechanical Iris Door

    yes, has become much clearer

    "No chickens were hurt in the making of this video"Prize for originality and execution.I will need to go through yr description a few times though coz not all very clear yet how you put things together, but I will probably be able to work it out

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  • diy_bloke commented on rabbitcreek's instructable Weather Portal2 weeks ago
    Weather Portal

    Awesome. Some all weather cover for the tubes would be a great addition so I can place it outside to impress the neighbours

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  • diy_bloke commented on goks_lf's instructable Arduino Soil Moisture Sensor2 weeks ago
    Arduino Soil Moisture Sensor

    I hope you do not mind me making a few remarks on your project:1. the sensor. The sensor is a resistance sensor, not a capacitive. so it does not measure the dielectric constant but simply the resistance of the soil between the two 'legs'If it were a capacitive sensor it would need to be isolated from the soil and you could not simply measure it with an analog port.2. As you are reading it with an analog port, the module itself (the module in between the sensor and your arduino) becomes redundant and just uses power for nothing.The Analog pin on the module, is directly connected to the sensor, bypassing the electronics on that module. better connect the sensor directly to the analog port on your arduino.3. As the sensor will be fed current oon a continous bas, it will corrode due...

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    I hope you do not mind me making a few remarks on your project:1. the sensor. The sensor is a resistance sensor, not a capacitive. so it does not measure the dielectric constant but simply the resistance of the soil between the two 'legs'If it were a capacitive sensor it would need to be isolated from the soil and you could not simply measure it with an analog port.2. As you are reading it with an analog port, the module itself (the module in between the sensor and your arduino) becomes redundant and just uses power for nothing.The Analog pin on the module, is directly connected to the sensor, bypassing the electronics on that module. better connect the sensor directly to the analog port on your arduino.3. As the sensor will be fed current oon a continous bas, it will corrode due to electrolysis very rapidly. One can use an Arduinopin rather than a continous 5Volt to feed the sensor and switch it off in between readings. That will seriously enhance the time your sensor will last.I hope you do not mind me making these essential remarks

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  • diy_bloke commented on ensarlevent's instructable SMART MINI GREENHOUSE2 weeks ago
    SMART MINI GREENHOUSE

    I have made quite a few plant irrigation projects and growbox/greenhouse projects myself, but I am always interested to see how other people do it.I hope you do not mind a few remarks?I think for the average reader it might be unclear what you do with the moisture sensor and in fact it is a bit unclearto me too. Do you hang it in the water reservoir to indicate if that is still full or not? Or do you stick it in the soil of your plants to see if the soil is moist enough.The latter doesnt really give much added info as your irrigation is automatic (on a time trigger as I understand).You seem to use a Sparkfun moisture sensor, that I am afraid will not really look good anymore in a short time.You feed the sensor constantly with a current. Through electrolysis it will corrode and disso...

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    I have made quite a few plant irrigation projects and growbox/greenhouse projects myself, but I am always interested to see how other people do it.I hope you do not mind a few remarks?I think for the average reader it might be unclear what you do with the moisture sensor and in fact it is a bit unclearto me too. Do you hang it in the water reservoir to indicate if that is still full or not? Or do you stick it in the soil of your plants to see if the soil is moist enough.The latter doesnt really give much added info as your irrigation is automatic (on a time trigger as I understand).You seem to use a Sparkfun moisture sensor, that I am afraid will not really look good anymore in a short time.You feed the sensor constantly with a current. Through electrolysis it will corrode and dissolve fairly fast. Also, it is not really necessary to feed such a sensor with 3 leads (Voltage, Ground, Signal). You could do with 2 leads: Signal and Ground and switch the internal pull up resistor on.Can I suggest that anyone building this just uses 2 nails for a probe? Could consider only switching on the power to the probe for a very short moment to take a reading and have it off the rest of the time. That will seriously lenthen the time that sensor will lastI am a bit confused by your code, as you declare the sensorvalues in the loop, so they get declared time and time again.I would suggest to declare them outside that loop.The MQ-135 is a nice sensor that measures a lot of gasses and with that it becomes rather 'useless' I am sorry to say. The most important info to know about the airquality in your greenhouse is the CO2 level. You can use the MQ-135 to show CO2 levels with a bit more programmingIt seems you switch your light on and off every 30 min for 30 min, although that can be used to maintain the heat in your greenhouse, most plants will not like that cycle. For temperature control it is unpredictable because much depends on the size of yr greenhouse and the wattage of your lamp.As you still have pens a plenty left, I would suggest to add some sort of temperature sensor, if only an ntc, but a DHT would be great too as that also tells you the humidity.You use an L298 H bridge for the Pump and the Fan. That seems to be a complicated solution for a small problem.You now need 4 pins to control 2 actuators, which is unnecessary, unless you want the pump and the fan to turn backwards from time to time.With regard to the fan it is even complete overkill because you switch it on in your setup and it then stays on forever. Obviously you already have built your greenhouse but for anyone else building the project can I just suggest a relay or a transistor for the pump and the same for the fan, though the latter could also be fed directly from the PSU, given the fact it is constantly on.You use very long delays in your project. I get that, it is easy to do and it will work, but it is not really nice.Basically it puts your micro at a halt for 1 hour, with an interruption halfway to switch the light off.Should any of the sensors register something important in the mean time (say a leak), your processor will not know about it for possibly the next hour. Can I suggest to use Millis() instead of delays.I realize my comment has become longer than I wanted and I come with a lot ofrecommendations, please do not take that negatively. It is a good project, but could easily be further improved

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  • diy_bloke commented on zposner's instructable Planter Box2 weeks ago
    Planter Box

    In order to not let the soil out in between the twigs/sticks, you could line the inside with anti root cloth/landscaping cloth.High is great, especially if you get a bit older

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  • DIY UV Meter With Arduino and a Nokia 5110 Display

    @Arduinomster, my guess would be yes. Can make it with attiny85. probably even an attiny25

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  • diy_bloke commented on How-ToDo's instructable DIY Arduino Mood Lamp3 weeks ago
    DIY Arduino Mood Lamp

    ah ok... i had the impression it was 4 'walls' but your idea makes more sense. tnx

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  • Arduino Uno Wireless Weather Station   (Wunderground.com)

    Looks really great. Although I am quite sure that the ESP8266 alone would have been enough for the program, the lack of ADC ports (you need minimally 2) makes even the Wemos D1 unsuitable.Anyway, Love your shield

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  • diy_bloke commented on The Soldering Station's instructable ESP8266 Basement Monitor4 weeks ago
    ESP8266 Basement Monitor

    Thanks, Frankly speaking I have had quite a few DHT11's die on me as well. Ironically they cant really stand moisture. Up to 95% is ok. I had some outside in a heavy fog (98%RH) and they died. Oh well, may go for DHT22... or maybe BMP280

    Thanks, Frankly speaking I have had quite a few DHT11's die on me as well. Ironically they cant really stand moisture. Up to 95% is ok. I had some outside in a heavy fog (98%RH) and they died. Oh well, may go for DHT22... or maybe BMP280

    Thanks, Frankly speaking I have had quite a few DHT11's die on me as well. Ironically they cant really stand moisture. Up to 95% is ok. I had some outside in a heavy fog (98%RH) and they died. Oh well, may go for DHT22... or maybe BMP280

    Looks great.I usually stick to a DHT11 As I am more interested in an indication of humidity rather than the exact degree, plus I hear that the life expectancy of a DHT22 is less than the DHT11.What is your experience with that uptil now?

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  • diy_bloke commented on How-ToDo's instructable DIY Arduino Mood Lamp4 weeks ago
    DIY Arduino Mood Lamp

    I see a lot about the woodworking but not much about the acrylic rim. How did you do that?

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  • diy_bloke commented on diy_bloke's instructable Arduino Controlled Light Dimmer1 month ago
    Arduino Controlled Light Dimmer

    The output voltage is basically the same as the grid voltage you put in. So if you connect it to 220V it will be 220...... when the triac is open

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  • diy_bloke commented on diy_bloke's instructable AC PWM Dimmer for Arduino1 month ago
    AC PWM Dimmer for Arduino

    I understand.The reversed logic was something I did because I aimed for optimal timing around the Mosfet so it would switch fast and the reversed logic suited me.If you want it reversed can use the Optocoupler in series with the 100k

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  • diy_bloke commented on diy_bloke's instructable AC PWM Dimmer for Arduino1 month ago
    AC PWM Dimmer for Arduino

    I can only state that I didnt see any flickering with the standardarduino that uses that uses the mentioned frequencies.the flickering is very much depending on the time it takes to open the MOSFET and that again depends on the available voltage for the gate.I ahve constructed my circuit such that there is a fast rise and drop of the available gate voltage.Sir O's circuit is different, you might have seen the discussion on the two antiparrallel diodes that nor I nor acolomichi understood and that SirO could not explain other than 'it works and if repalced by a wirelink it doesnot'In general a higher frequency would probably give more trouble in Switching the FET. In that aspect it is surprising that SirO finds that 62kHz didnt cause any flickering and 32kHz did.As he changed his cir...

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    I can only state that I didnt see any flickering with the standardarduino that uses that uses the mentioned frequencies.the flickering is very much depending on the time it takes to open the MOSFET and that again depends on the available voltage for the gate.I ahve constructed my circuit such that there is a fast rise and drop of the available gate voltage.Sir O's circuit is different, you might have seen the discussion on the two antiparrallel diodes that nor I nor acolomichi understood and that SirO could not explain other than 'it works and if repalced by a wirelink it doesnot'In general a higher frequency would probably give more trouble in Switching the FET. In that aspect it is surprising that SirO finds that 62kHz didnt cause any flickering and 32kHz did.As he changed his circuit a few times and he himself says he does not fully understand how it works, I feel a bit hesitant to make any further comment on his 32kHz vs 62kHz experience

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  • Programming P89V51RD2 (8051 Microcontroller) on Breadboard

    That good old 8051!My firstt steps in microcontroller progarmming with the 8052AH basic, 80C32, 80C31. Assembly programmingoh well, nostalgia

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  • diy_bloke commented on yoh-there's instructable MQTT and Wifi Powered Mailbox Flag1 month ago
    MQTT and Wifi Powered Mailbox Flag

    Well done. A mailbox that actually sends you mail upon receiving mail :-)I have seen various diy smart mailbox projects and many people had trouble with the switch: reed switches, LDR's, Opto. Yours is of utmost simplicity, but seems the best solution, eventhough you said you preferred a reed switch. I have seen people complain the reed switch got magnetized and got 'sticky'.We'll see how yr match will do in humid weather, but then there are always plastic lollipop sticks :-)

    With regard to a an Android dashboard app triggering an OS alert... one would think that would be simple but I havent found one either. Always comes down to 'signing up for a notification service', which i do not want

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  • A Simple MQTT Pub/Sub Node With Arduino UNO and W5100 Ethernetshield

    thank you for your kind words. Relays shld not just go on and off. Can you try and paste yr code?

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  • diy_bloke commented on diy_bloke's instructable AC PWM Dimmer for Arduino1 month ago
    AC PWM Dimmer for Arduino

    thank you for yr kind words.You may want to check here before you decide on what to build: https://www.instructables.com/id/A-PWM-Dimmer-Revi...

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  • diy_bloke commented on diy_bloke's instructable Using an I2C LCD on Attiny851 month ago
     Using an I2C LCD on Attiny85

    I agree withThijx, could be loose connection I think i did not use any pull-ups as in my case the i2c module had pull ups.Anyway, I am happy you got it working

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  • diy_bloke commented on diy_bloke's instructable Using an I2C LCD on Attiny851 month ago
     Using an I2C LCD on Attiny85

    I am happy you got it working :-)

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  • diy_bloke commented on adriaanb's instructable Battery Operated Drip System1 month ago
    Battery Operated Drip System

    Thanks. well that is still fairly decent, especially since the UNO is not really powerfriendly :-)Just wondering.... 2 years later.... would you have done things different? change things?

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  • Send Sensor Data (DHT11 & BMP180) to ThingSpeak With an Arduino, Using Cable or WiFi (ESP8266) or Use ESP8266 Alone (UPDATED AUGUST 2016)

    thanks for sharing. I see you use a bare esp-12. From a battery point of view that is a good choice

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  • diy_bloke commented on diy_bloke's instructable Arduino Controlled Light Dimmer1 month ago
    Arduino Controlled Light Dimmer

    can just attach the two bulbs in parallel. if you want them o dim them seperately have a look at my 3 channel dimmerhttps://www.instructables.com/id/3-channel-Dimmerf...

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  • diy_bloke commented on diy_bloke's instructable AC PWM Dimmer for Arduino1 month ago
    AC PWM Dimmer for Arduino

    yes, bt indeed a heatsink is always advisable

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  • diy_bloke commented on diy_bloke's instructable Installing Attiny13 Core Files1 month ago
    Installing Attiny13 Core Files

    It seems you are using a library that makes calls that are not supported in the microcore, so depending on what you exactly want to do, you need to do some prgramming around that

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  • diy_bloke commented on diy_bloke's instructable Arduino Controlled Light Dimmer1 month ago
    Arduino Controlled Light Dimmer

    I am nut sure if i understand your question. The MOC3021 should be connected as in the circuit. In that, pin 2 is connected to 0 Volt/ground and pin 1 to an arduino pin via a resistor. 4 and 6 are the secundary ones and 3 and 5 should not be connected

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  • diy_bloke commented on diy_bloke's instructable Using an I2C LCD on Attiny851 month ago
     Using an I2C LCD on Attiny85

    if working noneed to change. As far as iknow the i2c lcd module has pull ups47k is by theway an unusual value for i2c. I presume you mean 4k7

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  • diy_bloke commented on diy_bloke's instructable AC PWM Dimmer for Arduino2 months ago
    AC PWM Dimmer for Arduino

    it depends what you want it to do

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  • diy_bloke commented on diy_bloke's instructable Arduino Controlled Light Dimmer2 months ago
    Arduino Controlled Light Dimmer

    Good. Still a bit surprising as I have used the TIC206 with no problem

    well it is not much different from using an Arduino. there are several ways to communicate with the ESP8266, but you could have it serve a webpage with a box on it in which you can enter a dimming level. Probably could make that a slider too. That dimming level you then use to determine the phase cut of the TRIAC

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  • diy_bloke commented on diy_bloke's instructable 433 MHz Coil Loaded Antenna2 months ago
    433 MHz Coil Loaded Antenna

    no i didnt remove anything. just added the antenna to where it says "ANT"

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  • diy_bloke commented on acolomitchi's instructable A PWM Dimmer Revisited2 months ago
    A PWM Dimmer Revisited

    "3 smaller caps in parallel will reduce the ESR (whatever value that ESR would be)."Presuming that the ESR does not vary much with the actual capacity of a single capacitor (meaning that say a 100uF has a comparable ESR to a 10uF), this would ideally divide your ESR by 3 (I know, simplification)

    I admit, at my age I may stick in a wire at one end, and already forget where it is supposed to go when I get to the other end

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  • diy_bloke commented on diy_bloke's instructable 433 MHz Coil Loaded Antenna2 months ago
    433 MHz Coil Loaded Antenna

    good idea. Thanks for the pics

    my pleasure. I am happy it works well for you, just as it did for me.

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  • diy_bloke commented on acolomitchi's instructable A PWM Dimmer Revisited2 months ago
    A PWM Dimmer Revisited

    Just a remark about the breadboard issue. I fully agree. I had used the breadboard only as a quick test, but even with low voltage i never use breadboard for a final setup. Mainly because wires can become loose and then after a few months one may think Hmmmm, where did that yellow wire plug in again :-)

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  • diy_bloke commented on acolomitchi's instructable A PWM Dimmer Revisited2 months ago
    A PWM Dimmer Revisited

    If my eyes dont cheat me you have a 66kOhm (5x330) in the voltage divider, so with 30uF, and say 300 Volt you'd be around a 15 Volt charge in 100mS. But as you do not short out the full charge, I think you will not really have a problem there

    thats true, i kinda used it loosely in analogy to the original design

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  • diy_bloke commented on acolomitchi's instructable A PWM Dimmer Revisited2 months ago
    A PWM Dimmer Revisited

    Looks great. Very tidy.Regarding the high voltage capacitor in my earlier design, that was to avoid any heating issues caused by RC delay on the gate voltage.However, by now I can confirm that a 50uF low voltage cap on the low side of the voltage divider works just as well, without noticeabe heating of the FET. The 22uF in your design probably does too, but I just did not try that yet :-)

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  • diy_bloke commented on diy_bloke's instructable Arduino Controlled Light Dimmer2 months ago
    Arduino Controlled Light Dimmer

    Thejo, in the comments this issue is addressed several times, Triacs are just not the most suitable to regulate motors. They can but humming, usually caused by harmonic distortion of the wave pattern is often a byproduct. Reduction measures are particular the type of motor used in the fan, but I would start with a snubber network

    Thejo, in the comments this issue is addressed several times, Triacs are just not the most suitable to regulate motors. They can but humming, usually caused by harmonic distortion of the wave pattern is often a byproduct

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  • diy_bloke commented on diy_bloke's instructable LM386 Amplifier With PCB2 months ago
    LM386 Amplifier With PCB

    well if it was working as it should and started heating up after you soldered a wire, then my first advice would be to really check the vicinity of that solder joint. and if that looks ok, check entire pcb for shorts that might have been caused by stray solder drolets

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  • diy_bloke commented on diy_bloke's instructable AC PWM Dimmer for Arduino2 months ago
    AC PWM Dimmer for Arduino

    Well done! Looks prett neat

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  • Send Sensor Data (DHT11 & BMP180) to ThingSpeak With an Arduino, Using Cable or WiFi (ESP8266) or Use ESP8266 Alone (UPDATED AUGUST 2016)

    Maria, I am not sure what server you haveand forgive me if i maybe misundersyand your question but usually posting data to another server involves more than just changing the ip address.The data may come in, but your server probably has no idea what to do with it. So exactly what are you trying to do and what server are u using

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  • diy_bloke commented on frankdonald's instructable DIY LED Head Wreath2 months ago
  • diy_bloke commented on Toglefritz's instructable Build a Tricopter With Rotor Bits2 months ago
    Build a Tricopter With Rotor Bits

    That is a big write up. Very good. If I ever want to build a tricopter, I will get back here

    Maybe not an entirely fair comparison?

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  • diy_bloke commented on to'bryant's instructable Wild Meats, Good Eats: Venison Edition2 months ago
    Wild Meats, Good Eats: Venison Edition

    Very interesting.Although I am not a fan of 'sports and trofee' hunting, I have no problem with anybody hunting to eat what they shoot. I appreciate that you use every part of the animal I would hunt for food too if I lived in a different area. Nevertheless, I get enough game, albeit not deer, I often pass a road where animals (mostly ducks) are killed by cars and as I pass by daily, I know if one is fresh.And ah yes, the usual reactions of people loathing what you do. They prefer to have someone else do the killing for them at a slaugtherhouse

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  • diy_bloke commented on Crysknife007's instructable Pi Zero W Tic Tac Case2 months ago
    Pi Zero W Tic Tac Case

    yep sure, the 'W' version

    nifty little boxes :-)4 channel SSR in a TicTac.I just love using all sorts of containers for purposes they were not meant for.

    With Nr 3, placing a direct order for a one gallon bucket of icecream at yr nearest ice cream parlour

    I understood the joke ;-)don't get me wrong, I d love 3D printing custom parts, but that doesnt mean I do not appreciate creative use of what is available, especially if you are looking for a container for something that is really cheap.I have a decent case for my Raspi3, but it just seems odd to spend 4-5-6 dollars for a case on a 10 USD raspi zero W. Especially since it doesnt come with 1 usd worth of candy

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  • diy_bloke commented on diy_bloke's instructable 433 MHz Coil Loaded Antenna2 months ago
    433 MHz Coil Loaded Antenna

    Thanks for yr feedback. I am actually still very happy with them. Brought Rf communication with 433 Mhz on a serious level.Yes, always good to use some extra wire. If you use a core to wind them on is only a fraction thicker that could easily grab some extra material.I really encourage anybody using RF433MHz to give these a try

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  • diy_bloke commented on diy_bloke's instructable Comparison of Capacitive Soil Probes2 months ago
    Comparison of Capacitive Soil Probes

    Jeremie, thanks, it was fun doing and in fact I was curious to see how cheap one could make those probes.As a bit of update, the cover of my probe suffered a bit from the cold, I presume the frozen soil was hard enough to probe some holes in the protective layer, but that was fixed soon.Putting it all together, capacitive probes definitely have advantages over resistive probes, but they are slightly more complicated. So what would I now chose?Well I am very happy with the two capacitive probes I have, but I am also very happy with the resistive probe opamp version, as well as with the resistive one that is being read by an Attiny85.But all in all i have chosen for resistive probes with addition of some hard/software that will cut off the power to the resistive probe for most of the t...

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    Jeremie, thanks, it was fun doing and in fact I was curious to see how cheap one could make those probes.As a bit of update, the cover of my probe suffered a bit from the cold, I presume the frozen soil was hard enough to probe some holes in the protective layer, but that was fixed soon.Putting it all together, capacitive probes definitely have advantages over resistive probes, but they are slightly more complicated. So what would I now chose?Well I am very happy with the two capacitive probes I have, but I am also very happy with the resistive probe opamp version, as well as with the resistive one that is being read by an Attiny85.But all in all i have chosen for resistive probes with addition of some hard/software that will cut off the power to the resistive probe for most of the time and only switch it on for the few ms that I read every 4 hrs. Does wonders for the metal of the probe.Given the fact that resistive probes actually measure molecule concentration rather than true humidity, if I were a commercial farmer I probably would opt for both, just to be able to get some feedback on the fertilizer I might be adding.As it is, both types of probes have given me satisfactory results.Currently I have changed my irrigation set up. Irrigation is now triggered by a combination of soil measurement, temperature and weatherforecast. I measure all my growbeds with 2 pcf8591 ADC's, use the mean to establish if dry or not and use the individual results to reduce or increase irrigation to that specific bed. Used to be something self written but bringing it all into OpenHAB

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  • diy_bloke commented on diy_bloke's instructable AC PWM Dimmer for Arduino2 months ago
    AC PWM Dimmer for Arduino

    Indeed. That is exactly what I meant with my remark to M4biz. Thanks for yr feedback. Especially good to knowit does not heat up.If you are OK with it I will add yr circuit to the instructable itself

    No it will not, at least not properly. The optocoupler should go below where the capacitor is attached.With regard to my remark on your first proposed circuit, That was followed by SirO2 with success. Look for the circuit in his post below

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  • diy_bloke commented on Naran's instructable Cheapest Smart Home for $382 months ago
    Cheapest Smart Home for $38

    Looks great, but Step 4 and 5 are slightly confusing.Step 4:is this in anyway different than downloading that app from Playstore?If it is then please explain:"Connect" To what? A PC?"Open App Libraries" Where? Website? Yours says says the App section is 'under construction'?Step5:OK this also deals with using phone as webcam, so which step should I follow? 4 or 5? or is the one for android and the other for IOS.nevertheless, great project for little money. apart from a few Sonoffs, most of my homeautomation done by 433MHz RF as well

    Looks great, but Step 4 is slightly confusing.Step 4:is this in anyway different than downloading that app from Playstore?If it is then please explain:"Connect" To what? A PC?"Open App Libraries" Where? Website? Yours says says the App section is 'under construction'?I presume step 4 only deals with using a webcam as motion detector not as a smartcamnevertheless, great project for little money. apart from a few Sonoffs, most of my homeautomation done by 433MHz RF as well

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  • diy_bloke commented on Crysknife007's instructable Pi Zero W Tic Tac Case2 months ago
    Pi Zero W Tic Tac Case

    it fits in a TicTac box?? I am amazed. Is that the big container or the standard? :-)I once fitted a 4 channel AC switch in one of those, but an entire computer?I have to get me one

    I am sure someone will come up with a 3D printed Tictac box for this ;-)

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  • Smart Socket With Temperature Humidity Sensor, Laptop or Smartphone Battery Auto Cut in Cut Off Switch.

    looks absolutely great. I would already build it just as a conversation piece :-)

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  • A Simple MQTT Pub/Sub Node With Arduino UNO and W5100 Ethernetshield

    check with mqttspy what command is actually being sent

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  • diy_bloke commented on diy_bloke's instructable Arduino Controlled Light Dimmer2 months ago
    Arduino Controlled Light Dimmer

    The help you are asking in fact has not much to do with the dimmer but more about the communication between the app and the ESP8266.When you say you use bluetooth, does that mean you also have a bluetooth module attached to your ESP8266?Ofcourse that is possible but it seems like beating the purpose a bit as the arduino already could do that.I am not sure why you would need a server. Are you using some standard app that requires a server?Anyway, please first expand on what you are exactly doing before I am able to help you

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  • diy_bloke commented on diy_bloke's instructable Arduino Controlled Light Dimmer2 months ago
    Arduino Controlled Light Dimmer

    looks good, how did you resolve yr initial problem?ideas regarding wifi are very broad but i guess you' d want to have some sort of app with a slider to set the brightness level

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  • A Simple MQTT Pub/Sub Node With Arduino UNO and W5100 Ethernetshield

    I suggest for testing you remove he need for password so at least you are sure there is no problem with that

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  • diy_bloke commented on diy_bloke's instructable AC PWM Dimmer for Arduino2 months ago
    AC PWM Dimmer for Arduino

    probably not so good. Place the optocoupler below where the capacitor is charged. You may have to adapt the resistor va;ue

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  • diy_bloke commented on RobBest's instructable RF Panel Relay2 months ago
  • diy_bloke commented on diy_bloke's instructable AC PWM Dimmer for Arduino2 months ago
    AC PWM Dimmer for Arduino

    this would be what you need

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  • A Simple MQTT Pub/Sub Node With Arduino UNO and W5100 Ethernetshield

    well at least it is a beginning.I am not sure if you are using mqttspy, but that s a great program to monitor MQTT traffic and check for mistakes

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  • diy_bloke commented on mpolit's instructable LED Cloud2 months ago
    LED Cloud

    Fantastic, ofcourse one could make irrelevant remarks like 'there are no stars in clouds' but anybody making stuff for their kids is a hero in my book.I love the use of pan lids to get the shape. Your kid is going to love this.When he/she grows up: add internet connectivity and let the cloud resemble the weather forecast

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  • ESP8266 Tutorial: Build an Automatic Plant Watering System

    Auto watering devices seem to be favorite things to build :-) I have so myself and i find every new one interesting to see how other people tackled the issue

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  • diy_bloke commented on smurray2's instructable Cordless/Corded Drill2 months ago
    Cordless/Corded Drill

    I have two of such drills that actually gave up quite early in their existance and a 3rd one that gave years of good service but now wont charge anymore. This looks like a great idea

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  • A Simple MQTT Pub/Sub Node With Arduino UNO and W5100 Ethernetshield

    i do not use home assistant so i might nt be the right person to ask. What this device does is to send mqtt messages, as any other.Home assistent connects with mqtt through a broker and your yaml fine should just connect to the message as is:So suppose this module would send the livingroom temperature, add the following to your configuration.yaml file:# configuration.ymlsensor: - platform: mqtt state_topic: "home/livingroom/temperature"

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  • diy_bloke commented on diy_bloke's instructable AC PWM Dimmer for Arduino3 months ago
    AC PWM Dimmer for Arduino

    you could put the optocoupler in the upper part of the voltage divider, but you would need to make a few recalculations

    your circuit is a bit unclear on where the 100uf is connected to. Your circuit makes no difference between crossing lines and connected lines. It seems needlesly complicated. if you want two channels, just duplicate the fet, the lamp, the optocoupler and the voltage divider

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  • diy_bloke commented on diy_bloke's instructable Arduino Controlled Light Dimmer3 months ago
    Arduino Controlled Light Dimmer

    Well that gives a bit more info than yr original request. You are using TimerOne to control the delay for the firing of the gate pin. The TimerOne library uses timer 1 which also controlls pwm, Hence the flickering.I think TimerOne lib allows you to set up its own pwm with Timer1.pwm(pin, duty);

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