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mad_b

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35CommentsCuritiba - PR Brazil

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  • Simple Gnat Trap With Your Grill

    Hi. A doubt, using coal would be part of the trick (like generating CO2 or so)? Maybe an electric heater would do if not the case? Not questioning costs here.

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  • Sorry I have not read code and maybe missed the information, but how do you calculate the power based on pulses, is a LED pulse emitted each xxx Watts spent and registered by the company meter? Nice smart project ! :)

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  • Hello. The goal (for me) in putting leds as turn lights was to reduce the energy spent on a motorcycle so I can increase the energy that goes to the main headlight from 35W to 60W- I now blink a 1W led instead of a 25 W bulb (plus other overall lamp X LED replacements - it worked for me). +So replacing a lamp by a LED and not taking advantage of less alternator load is a bit pointless to me (there are more considerations in my particular case however). Along with that, I changed the vehicle OEM relay for one specially designed for led lights. However I noted that if I change also to the dashboard indicator lamps (~1.3 Watts) for leds, it seems the whole circuit becomes near the lower limit for the relay (1 front + 1 rear lamp + dashboard ~= 2.08 Watts and I think it need a load of 3W mini…

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    Hello. The goal (for me) in putting leds as turn lights was to reduce the energy spent on a motorcycle so I can increase the energy that goes to the main headlight from 35W to 60W- I now blink a 1W led instead of a 25 W bulb (plus other overall lamp X LED replacements - it worked for me). +So replacing a lamp by a LED and not taking advantage of less alternator load is a bit pointless to me (there are more considerations in my particular case however). Along with that, I changed the vehicle OEM relay for one specially designed for led lights. However I noted that if I change also to the dashboard indicator lamps (~1.3 Watts) for leds, it seems the whole circuit becomes near the lower limit for the relay (1 front + 1 rear lamp + dashboard ~= 2.08 Watts and I think it need a load of 3W minimum to properly blink at the correct rate).So finally, my question: - if I want to add a resistor to make the dashboard light spend 1 Watt instead of 80 mW, and so making the load circuit to consume at least 3 Watts, I would just calculate (with 14.5V & associated current) my goal resistor instead of this 6R 50 Watts one in your instructable? Like using a 2W resistor with the resulting value for that?

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  • I am used to make similar things using Acrylic resin (polymer and cataliser). Will certainly try that.

    In your place I would make a test. Both original tank material and the glue patch, let it soaked on a gasoline recipient and check it out some days (a month would be ideal) later. It may resist the gasoline, but you must assure that the crack/hole/etc. is held together also. And, the fix must be p´rotected against bending twisting and other mechanical forces over the original damage that is to be fixed. Because unless you use specific, industrial grade gleue/repair/weld materials, there ins no guarantee that it can withstand the normal use of the fixed part.

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  • Sorry if I missed, but what is the result sampling rate that you were able to make with this project? Thanks :)

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  • I think probably you did not grasp the values here. Usually in open air, each mm of space needs 1000 Volts to make a spark jump. So if you see a 2cm spark, it means around 20,000 volts. Voltage increase as current decreases. So if you provides 12V @ 2A, probably you are getting 20KV @ 1,2 milli Ampère.If you need 120V 60A, you need to get wires directly from the electricity meter of your house (Where I live, the average capacity to a whole house is 127V @ 40 or 50 Amps...Do your homework and figure it out what exactly do you need.Ohm's law, current x volts x power... By your question sorry but it seems you don't have an idea what you want or are dealing with. So be safe and research a bit more. :)

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  • Hello. I could not find the circuit and code to read the RPM, is it in this project ?I need a pickup circuit that can be read by an Arduino. Your project is cool but are you showing the spark pickup circuit here somewhere? best Regards. Lissandro.

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  • probably is not the problem. The important value here (other than obviously not burning using a small power capacity resistor) is the resistance (220 ohms) - you could use any resistor of 220 ohms with 5 to 500 watts or even more. Nor less.. Problem is somewhere else for sure - if the referred resistor is not shorted or opened of course;

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  • He did not. The SMD ram chip probably got wires soldered to it, or he used a custom PCB. The drawing showing a breadboard is just to ilustrate the circuit.

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  • That seems to be my problem witrh a couple of nanos that I bought (1) ... Thanks for you, and also the seller that pointed out that direction. However in the Windows10 that I used, it found the correct driver alone. Must try this at home tonight on the W7...

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  • Hello! :) I just begun to study this component, do you know if one could create a program to be programmed into the esp8266 that would allow to use it standalone, with also TX and RX pins as I/O, besides the GPIOs 0-2? I would like to have 4 I/O pins in a standalone single ESP.

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  • Hi. Do you have some figures (how many volts /(mili)amps per what level of heat... Or so?

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  • You need to write a special code testing also if the magnet is stopped right over the sensor... I found similar situation but decided to rewrite nearly all the code though using the same approaches.

    Hi! I tried your speedometer code based on the 1KHz timer, but I don't use the serial port; I display the information on another user Interface and the signal is read from a hall sensor conditioned to TTL by a voltage comparator. The speedometer full exemple that you wrote here seems not to be working correctly, however the general interrupt/polling idea was great and I could made a code myself. I changed it to 10 KHz for better precisionm and as I plan to use it on a motorcycle I added a section and pin input for RPM count inside the ISR. Thanks for the usefull information.

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  • Hi. Does this change to use LiFePO4 requires some change on charger or it works the same as original lead acid alternator/rectifiers in the car?

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  • mad_b commented on 32ggd's instructable Another Simple Flea Trap

    No heat needed? Maybe a heat source (like a small 7W incandescent lamp) could provide better results. Fleas are attracted mainly by heat (people and pets do not emit visible light, just IR) :)

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  • mad_b commented on bizydad's instructable Wood Burning Pool Heater

    HI! this is a cool work! I would recommend search a bit on the net about "rocket stoves", if you want to have a more efficient energy conversion. You will find that the rocket stove has more than 90% of efficiency, thus allowing to consume less wood (or have more heat). An "open" fire like yours generates lots of smoke and wastes most of the wood stored energy.

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  • Usually refrigerator manufacturers recommend leave a few space ~50 millimeters or more on all sides of the equipment, to allow air to flow; however, if one does not decides to fill ALL space around the refrigerator, things should not post a problem. But is good to pay attention in case a particular refrigerator niche is relying on all the space around it in order to function correctly. In practice heat goes up, so upper space is the most important anyway. I have seen below some comment(s) and noted by experience that in fact, region around the refrigerator do get moist and hot. And as such, the wood would need a good paint/finish to avoid a quick dirt and fungus buildup, and in the spices not hermetically sealed as well.

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