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  • Eric Brouwer's instructable GPS & Real Time Clock Stratum 1 Time Server's weekly stats: 10 days ago
    • GPS & Real Time Clock Stratum 1 Time Server
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      0 comments
  • ESP8266-01 IoT Smart Timer for Home Automation

    Hi allI have uploaded Version 1.10_trial for those who wants to test the code with the new generation ESP8266-01 modules that fails to work on older versions.This is still a test version, so any feedback will be appreciated.The trial code is available on the first page of the InstructableRegards,Eric

    Please see iv Version 1.10 now works. I have removed the SPIFFS save options, and now saves the network data to EEPROM. Looks asif this will solve the problem with the new versions of ESP-01.Regards, Eric

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  • ESP8266 Wireless NTP Stratum1 Server

    Hi, I could not get the code to compile, thus I used snippets this original code to create my own code that I can compile and upload via the Arduino IDE.https://www.instructables.com/id/GPS-Real-Time-Clo...

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  • ESP8266-01 IoT Smart Timer for Home Automation

    HiHave a look at the latest code. It now supports the Sonoff Basic

    Hi, and thanks for your comments.Yes, please feel free to modify and share your code with others.Also, thanks for sharing the small relay board drawing. I still wanted to make use of mine, but have no more "old" ESP-01 modules left.regards,Eric.

    Hi allI have uploaded the latest firmware (Version 1.08) today.- Some minor bug fixes made- Now supports the Sonoff BasicEnjoiy.

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  • ESP8266-01 IoT Smart Timer for Home Automation

    Code will work 100% with NodeMCU and Wemos D1 Mini

    Also, remember that the ESP-01 only have 4 IO pins available. You will have to use GPIO0 + 2 for I2C, leave GPIO3 for relay, and reconfigure GPIO1 for the button.You will then loose the LED function, as there are no more available IO pins.Regards,Eric

    Hi. Sorry to hear about your problems.I am using 14 similar devices, and not a single problem in the past year.My code uses GPIO3 I thing to drive the relay. This is also the Serial port receive.For testing, redefine the relay to say GPIO4. Next, user Serial.begin() to enable serial port.Then you can add Serial.print commands any place you want.Regards,Eric

    Hi, and thanks for your detailed question.I am having the exact same problem with all my new ESP-01 modules.Please refer to this:https://github.com/esp8266/Arduino/issues/4102Seems as if the ESP-01 projects will become less now.Due to this, I have started using the D1 Mini modules, which cost about the same as the ESP-01.Regards,Eric

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  • Arduino Based GSM/SMS Remote Control Unit

    Hi. I can unfortunately not say if my code will work with SIM modules other than the one I have used.Regards,Eric

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  • Eric Brouwer commented on VolosR's instructable 555 Timer Robot24 days ago
  • ESP8266 Wireless NTP Stratum1 Server

    I was able to compile the code with some modifications. Thanks again for sharing.

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  • Eric Brouwer made the instructable ESP8266 Wireless NTP Stratum1 Server26 days ago
    ESP8266 Wireless NTP Stratum1 Server

    Hi, and thanks for sharing this project. I was able to compile the code in Arduino IDE, with some modifications. Working great.I did not haave a spare ESP8266-01, and used the D1 Mini instead. Thanks, Eric

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  • ESP8266 Wireless NTP Stratum1 Server

    Hi, and thank you for sharing this project.As one of my biggest issues with IoT is the unreliable internet, I would love to build this NTP server.Can you please direct me into what software you are using to compile and upload the code to the ESP. Thank youRegards, Eric

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  • ESP8266-01 IoT Smart Timer for Home Automation

    Hi.Yes, it is feasible to use the DS3231 RTC instead of the internet time server.You will have to add your own software for reading/writing the local time to and from the DS3231.You also need to remove all the software used to get the time from the internet (all NTP Server related software).Regards, Eric.

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  • Arduino UNO As AtMega328P Programmer

    HiThe Eagle PC Board file is available for download under Step 2.Regards, Eric.

    Thank you for your feedback.Regards, Eric.

    HiI have not tried using a 8MHz crystal, but as far as I understand the programming of the ATMega328p, it should work.Aref is not used during programming, thus nothing is connect to the pin. No cap needed.Regards, Eric.

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  • 12V, 2A Uninterruptible Power Supply

    HiSorry, I noticed that I did not include the PC Board file.It is now uploaded, and available under Step 5.Regards, Eric.

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  • Android and Arduino SMS Based Home Automation

    Hi. You are correct that the code only have 594 lines.Looking at the code, it seems as if you are referring to another project of mine:https://www.instructables.com/id/Arduino-Based-GSM...Hope this helps.Regards, Eric

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  • Eric Brouwer commented on Eric Brouwer's instructable Electric Wheelchair Controller5 weeks ago
    Electric Wheelchair Controller

    HiNot at all. The controller went up in smoke after a few tests.I had to design a more robust controller. Have a look here:https://www.instructables.com/id/Designing-a-Dual-...Regards, Eric

    HiThank you for your kind words. Regards, Eric

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  • Arduino Based GSM/SMS Remote Control Unit

    HiUnfortunately, I have never worked with the STM32. I can thus not give you advice.Regards, Eric

    HiThe software does not make use of any GSM libraries. All the commands used to control the GSM module, is done by sending AT commands via the serial port.Regards, Eric

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  • Designing a Dual 40A PWM Speed Controller for Brushed Motors

    HiI did not keep track of the overall costs of this project, as it was only one part of a complete wheelchair project. The MOSFETS and heatsink hardware is the most expensive parts.Regards, Eric.

    HiYes, these MOSFETs will work.Regards, Eric

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  • Design of an Unregulated Power Supply

    HiNo, it should not matter if you use multiple capacitors to make up the desired value.Out of experience, a single big cap will just cost less than four smaller caps. And the space used by multiple caps might cause a problem in mounting the components.Good question, but use what you have in stock.Regards,Eric

    Hi, and please note, that only those that asks questions, will learn.To make it simple, have a look at the attached drawing.Hope this makes sence.Regards,Eric

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  • Eric Brouwer commented on Eric Brouwer's instructable 8 Channel Programmable Timer3 months ago
    8 Channel Programmable Timer

    Hi,Eight Channels means that the timer can control eight individual loads, and each output can be programmed individually.Regards,Eric

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  • ESP8266-01 IoT Smart Timer for Home Automation

    Hi PaulGlad to hear you got yours up and running.Regards,Eric

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  • Eric Brouwer commented on Eric Brouwer's instructable 2-Year Ultra Low-Power LED Flasher4 months ago
    2-Year Ultra Low-Power LED Flasher

    Hi hackinblack, and thank you so much for your informative reply.I fully agree with you regarding the CMOS chips, but throughout the years, It became easier for me to rather use a single micro instead of a couple of gates.I think I actually used the wrong title. This is more about the technique one can apply to a CPU to get a longer battery life, thant flashing an LED.The idea for this project started of as a quick solution to a small problem... flashing a LED for one month.But then I decided to see what is the lowest average current that I can still operated the micro on reliably. So this is more to show what one can do to save power on a micro.Regards,Eric

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  • ESP8266-01 IoT Smart Timer for Home Automation

    Hi ibanziThroughout the development, I only used the ESP8266-01 modules. All my projects are also build using the ESP8266-01. I have a total of 5 unit running perfectly, some for almost a year. I have not experienced any crashes to date.Although I assisted another reader with the NodeMCU code, I only tested the NodeMCU briefly. I can thus not confirm if the code works perfectly on the NodeMCU.I have 2 units running from 24V supply, 2 from 12V from a switched-mode supply, one on a 12V battery system, and on from 5V. I do not think that your supply is the problem.With my code optimised for the ESP8266-01, there are no more pins available for serial debugging.Regards,Eric

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  • Eric Brouwer's instructable 2-Year Ultra Low-Power LED Flasher's weekly stats: 4 months ago
    • 2-Year Ultra Low-Power LED Flasher
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      0 comments
  • Eric Brouwer commented on Eric Brouwer's instructable Electric Wheelchair Controller4 months ago
    Electric Wheelchair Controller

    Thank you very much for your comments. It was due to the extremely high cost that I decided to build this controller, rather than repairing the old unit.Regards,Eric

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  • Arduino Based GSM/SMS Remote Control Unit

    Thank you very much for the great reply.Regards, Eric

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  • Designing a Dual 40A PWM Speed Controller for Brushed Motors

    Hi ThAnkitSAs far as I can remember, the motors were between 300 and 350W each.Regards

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  • Designing a Dual 40A PWM Speed Controller for Brushed Motors

    Hi RobertThanks for your comments.I did not trust the internal diodes, thus the extra diodes.I did have a look at the original wheelchair mosfet bridge, and did not see any snubbers their. Therefore I did not add them, and to be honnest, I have zero design knowledge on the snubbers.RegardsEric

    Hi, and thanks for your feedback.I had to design this speed controller with the spares which were available locally. Thus the reason I used transistors instead of gate drivers.I also opted for this design as it can be built using normal spares available to most hobbyist.I agree that there are many more options available, but due to extremely long delays in shipments to South Africa (up to 3 - 6 months), I did not want to wait for these purpose-designed drivers.Regards

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  • ESP8266-01 IoT Smart Timer for Home Automation

    HiInitial tests during the design indicated that the ESP is able to keep accurate time for about a week. The maximum time loss was around 5 minutes.With the NTP server down from 13/04/2018 to 17/04/2018, I ws happy with real-time results, as my devices still switched on/off without me noticing a minor time error.Eric

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  • Arduino Based GSM/SMS Remote Control Unit

    Well done.Impressive looking PC Board.

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  • ESP8266-01 IoT Smart Timer for Home Automation

    Hi, and thank you for the update. I noticed this this morning when I was looking into the questions asked the past couple of days. Server went down about 17:00 on 13 April, and came back on line 17 April at around 16:00.I am happy to report that I could not notice a major loss/gain in time for the 4 days the units were keeping their own time without the NTP server.

    Hi again GerryGit.We noticed that the NTP server used as default was down from 13 April to 17 April. Please check if your device is working now.Eric

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  • Eric Brouwer commented on Eric Brouwer's instructable 7 Segment Up/Down Counter6 months ago
    7 Segment Up/Down Counter

    HiThank you for you comments.Unfortunately, changing the code alone can not increase the display count to 3 or four digits. The hardware will have to be changed as well.You will have to add two more strobe lines as well for the extra displays to accomplish this.You will find a lot of examples by searching 7-segment display multiplexing in Google. There should be hundereds of examples available.RegardEric

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  • ESP8266-01 IoT Smart Timer for Home Automation

    Hi ZacharyI have actually spent several days programming and testing the unit using WiFiManager, to set the SSID and password via the network.The main aim was to create a device that will be usable to all users, and does not require hard coding of the Access Point details. I have build in the region of 160 units, imagine if I had to obtain the WiFi SSID and password of each user I have sold a unit to. Imagine if these users had more than one WiFi access point on their premises...Security wise, the WiFiManager setup is relatively secured, as the IoT Timer is only accessible from within the user's home network. Yes, if the user enables port forwarding on their main router/DHCP server, the device can be accessed from the internet.Another security feature on most home internet connections, ...

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    Hi ZacharyI have actually spent several days programming and testing the unit using WiFiManager, to set the SSID and password via the network.The main aim was to create a device that will be usable to all users, and does not require hard coding of the Access Point details. I have build in the region of 160 units, imagine if I had to obtain the WiFi SSID and password of each user I have sold a unit to. Imagine if these users had more than one WiFi access point on their premises...Security wise, the WiFiManager setup is relatively secured, as the IoT Timer is only accessible from within the user's home network. Yes, if the user enables port forwarding on their main router/DHCP server, the device can be accessed from the internet.Another security feature on most home internet connections, is that the IP address of the home router changes periodically, and withuot a sort of DDNS service, access to the IoT Timers are further prevented.Personally, I believe that the use of hard-coded SSID and passwords is not recommended.RegardsEric

    HiDoes the LED flash rapidly for about 5 seconds, then off for about 5 seconds?This indicates that the NTP server could not be reached. The unit will continue to try to connect to the NTP server. This can take several seconds, but sometimes quite a few minutes. The IoT Timer will continue to contact the NTP server every 10 seconds until time is obtained.During this condition, are you able to set the time locally via the Web Interface?Once time is set locally, the unit will check the time once every hour.Please note that NTP servers does not always respond.... I am using 5 devices in my home, and part of the design of the software was to ensure the units are able to obtain the time after power failures. This function is tested once a month at my home when I do monthly generator tests run...

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    HiDoes the LED flash rapidly for about 5 seconds, then off for about 5 seconds?This indicates that the NTP server could not be reached. The unit will continue to try to connect to the NTP server. This can take several seconds, but sometimes quite a few minutes. The IoT Timer will continue to contact the NTP server every 10 seconds until time is obtained.During this condition, are you able to set the time locally via the Web Interface?Once time is set locally, the unit will check the time once every hour.Please note that NTP servers does not always respond.... I am using 5 devices in my home, and part of the design of the software was to ensure the units are able to obtain the time after power failures. This function is tested once a month at my home when I do monthly generator tests runs.If the NTP server tskes to long to reply, you might need to seach on Google for a different NTP server in you country/area.Hope this answers your questions.RegardsEric

    Hi GerryGitI am currently using 5 of the devices in my home, and do not have a problem with the NTP time synch.I am using the NTP IP of 129.6.15.28 on all my devices without any problems.After complete power failure on all devices, time is normally restored within 15 - 265 minutes on devices.Please note that NTP servers are not very reliable.... When first powered up, the device will try to connect to the NTP server every 5 minute (might be 10, I can't remember). Thereafter, the time is verified with the NTP server only once every hour. It might be that the time is not updated every hour, but only after a couple of hours.In my installation, I can say with sertainty that the time is updated at least once every day.I am not sure if this IP address is allowed/blocked via your internet serv...

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    Hi GerryGitI am currently using 5 of the devices in my home, and do not have a problem with the NTP time synch.I am using the NTP IP of 129.6.15.28 on all my devices without any problems.After complete power failure on all devices, time is normally restored within 15 - 265 minutes on devices.Please note that NTP servers are not very reliable.... When first powered up, the device will try to connect to the NTP server every 5 minute (might be 10, I can't remember). Thereafter, the time is verified with the NTP server only once every hour. It might be that the time is not updated every hour, but only after a couple of hours.In my installation, I can say with sertainty that the time is updated at least once every day.I am not sure if this IP address is allowed/blocked via your internet service provider. During my development, I have tested the devices on the following networks:- Telkom ASDL- Vodacom cellular (normal cellular data with phone set up as access point)- Vodacom APN (Vodacom 3G router via my company's APN network)- TelkomSA cellularRegardsEric

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  • Eric Brouwer commented on goldensilver853's instructable DIY 9 Volt Battery Clip6 months ago
    DIY 9 Volt Battery Clip

    I wonder who has not done this in the past :) :)

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  • ESP32 and ESP8266: Programming in the Air

    Thank you for sharing.I will try to incorporate the OTA code into my existing code for my IoT TimersRegardsEric

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  • Arduino Based GSM/SMS Remote Control Unit

    Thank you for your nice comments.Yes, you can set each channel to switch on when you call, and switch off when called again.See manual PULSEPULSE,0000 will set ALL outputs to TOGGLE ON/OFFPULSE,0234 will set ONLY output 1 to TOGGLE ON/OFFHope this helps.RegardsEric

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  • Designing a Dual 40A PWM Speed Controller for Brushed Motors

    Good dayThis Instructable already contains the step-by-step designs. It also includes the PCB, schematics and code needed to complete this project.I am thus not sure what other designs you are looking for.RegardsEric

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  • Arduino UNO As AtMega328P Programmer

    HiThanks for pointing out the labeling. When I have timer, I will update this.RegardsERic

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  • 12V, 2A Uninterruptible Power Supply

    HiThe charge pin on the schematic can be used to determine if the mains supply is on or off. When supply to the charger is on, this pin will be 5V, and 0V when supply is off.RegardsEric

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  • Eric Brouwer commented on iotamajig's instructable Enable DeepSleep on an ESP8266-018 months ago
    Enable DeepSleep on an ESP8266-01

    Thanks for sharing. I have been struggling with DeepSleep on my ESP8266-01's.Now I know why.RegardsEric

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  • Eric Brouwer commented on GhengisKhan1981's instructable Open Gate Warning8 months ago
    Open Gate Warning

    Hi, thanks for sharing this Instructable.Just a suggestion. I will replace the switch with a magnetic door switch. This will ensure that the switch always works. With your self-build switch, the contacts will oxidize in a short period of time, thus requiring cleaning and maintenance. See the following link:http://shop.rabtron.co.za/catalog/magnetic-switch-normally-open-circuit-white-p-5431.htmlFor less effort, you can also replace the flip-flop circuit with a flashing LED. See link:http://shop.rabtron.co.za/catalog/blinking-c-41_409_62_353.htmlHope you like the links to Rabtron, RegardsEric

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  • Eric Brouwer commented on NicK_RSA's instructable Watersaving: Shower Mixer Alternative8 months ago
    Watersaving: Shower Mixer Alternative

    Well done. This is a very simple solution to save water.Good luck in Cape Town.

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  • Eric Brouwer commented on SimpleCircuit's instructable HTML Oscilloscope8 months ago
    HTML Oscilloscope

    Thank you for sharing this Instructable.In the South African engineering field, it amasses me to see how few engineers can actually use an oscilloscope.This will most likely be very useful to a lot of people.RegardsEric

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  • Eric Brouwer commented on androkavo's instructable SMD - Hand Soldering8 months ago
    SMD - Hand Soldering

    Thanks for a very interesting Instructable.I really enjoyed the video where you compare the different alloys.RegardsEric

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  • Convert Emergency Flashing Lights to High Power LEDs

    HiI have uploaded a video in Step 1. The specific unit is the lights in the driver windows. The lights in the grill uses the same controller, but is split between two units of 6 LEDs each.RegardsEric

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  • Arduino Based GSM/SMS Remote Control Unit

    HiMost likely cause is normally that the sim card does not have airtime to send a SMS.When the unit is powered up, it sends a SMS to the Master User.Change the code on line 2119 fromSendSMS(Master_Nr,RxString);to// SendSMS(Master_Nr,RxString);This will disable the boot time SMS.Hope this info helps.RegardsEric

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  • ESP8266-01 IoT Smart Timer for Home Automation

    HiGlad to hear that the project is working for you.Part of my network security is specifically to prevent access from outside my house LAN. Thus I did not look into the password option.I will keep this in mind when I build another IoT project.RegardsEric

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  • Arduino UNO As AtMega328P Programmer

    Thanks for your feedback.Yes, one must look at the cheapest option available. For me, it is not really that the Atmega328 chip is the cheapest, but it is locally available. Lately, it is of no use in South Africa to order from eBay, as the shipping takes anywhere from 1 to 8 months....

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  • Android and Arduino SMS Based Home Automation

    HiThe most likely cause for the new sim card not working, is that it doeas not have airtime available to send an SMS.At boot-up of the unit, the unit will send a SMS to the master user.You can disable this in line 2119.Change: SendSMS(Master_Nr,RxString);to// SendSMS(Master_Nr,RxString);This will disable the boot-up SMS.Hope this will help.RegardsEric

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  • Eric Brouwer commented on Eric Brouwer's instructable 8 Channel Programmable Timer9 months ago
    8 Channel Programmable Timer

    Hi, and thank you for your feedback. Thanks for highlighting the issue with the 10K pull-down resistors. I have tested the pull-down, and indeed found that the 10K resistors does not pull the address lines low enough to register a logic 0.The idea was that the 10K resistors should pull the address lines low ONLY when a mini jumper was not inserted. With the jumper pin configuration on my PCB, these resistors can be omitted.I further determined that pull-down resistors of 1K works, but when the address lines are selected to 5V, each pull-down resistor will add 5mA to the power consumption.Conclusion:The 10K resistors can be omitted, but a mini jumper must be present on each address line to ensure correct addressing.RegardsEric

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  • Arduino Based GSM/SMS Remote Control Unit

    Hi, and thanks for your comment.Option 1: This function was already available in the code, but I left it disabled. Please find the latest firmware (V3.02 under step 13) to solve this. In V3.01 line 2119, the SendSMS command was disabled.Regarding option 2, with some effort it might be possible. There is still free EEPROM space to save the output status. I can not promise, but I will look into this option. Program memory at this stage is the biggest bottle neck to add additional functions.Just thinking of the finer details, the output memory will only be available for outputs whose outputs are programmed as TOGGLE outputs.When I have some spare time again, I will see if I can add this function.RegardsEric

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  • Arduino UNO As AtMega328P Programmer

    HiGlad this Instructable was of help.RegardsEric

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  • Eric Brouwer commented on Eric Brouwer's instructable Electric Wheelchair Controller9 months ago
    Electric Wheelchair Controller

    Hi, and sorry for my late reply.I have looked at several speed controllers for BLDC motors. There are a wide variety available, and each controller uses a different type of speed control signal. Some examples are:- PPM Control, but larger controllers does not have forward/reverse functions- PWM- Voltage input signal- Serial commsto name just a few.It is thus difficult to say if the speed control can be easaly impolemented in my current code.

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  • Arduino Based GSM/SMS Remote Control Unit

    Yes, there are plenty more powerful processors available.I specifically designed this unit based on the AtMega328p for the following reasons:- I prefer stand-alone projects, and not using an Arduino Uno board- simple single sided PCB design that can be made at home- through-hole components- availability of AtMega328p- no special components needed, except the SIM800 moduleThe ATMEGA2560 does have extra serial ports, and much more EEPROM, EEDATA and RAM. But I will not be able to make my own PC Boards.Regards

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  • ESP8266-01 IoT Smart Timer for Home Automation

    Thanks for your feedback.Enjoy.Eric

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  • Instructables View Counter + ESP8266 Guide

    Hi ThomasVDDThanks for your credit towards my code.Regards

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  • Eric Brouwer commented on ee_eng's instructable Make a Good Dupont Pin-Crimp EVERY TIME!10 months ago
    Make a Good Dupont Pin-Crimp EVERY TIME!

    Well presented Instructable.Thank you.

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  • ESP8266-01 IoT Smart Timer for Home Automation

    HiI have downloaded the code under STEP 6 (NodeMCU.zip) and uploaded it to a NodeMCU. Connections was done as per NodeMCU drawing also under STEP 6. No problems experienced with the unit or code.Please remember you need to set up the IoT Timer first to connect to your router.Follow these steps (under STEP 7) for initial setup::Power up the unitThe LED will start to flash rapidlyPress the MODE/SETUP buttonWhen the LED turns off, release the buttonWait a few seconds, then open your smartphone or device WiFi connectionsA new WiFi netword called IoT Timer will be visibleSelect this access pointLog onto the IoT Timer (no password is required)Wait until your device is connected to the IoT Timer networkOpen up any internet browserIn the address bar, type in the following IP address - 192.168.4...

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    HiI have downloaded the code under STEP 6 (NodeMCU.zip) and uploaded it to a NodeMCU. Connections was done as per NodeMCU drawing also under STEP 6. No problems experienced with the unit or code.Please remember you need to set up the IoT Timer first to connect to your router.Follow these steps (under STEP 7) for initial setup::Power up the unitThe LED will start to flash rapidlyPress the MODE/SETUP buttonWhen the LED turns off, release the buttonWait a few seconds, then open your smartphone or device WiFi connectionsA new WiFi netword called IoT Timer will be visibleSelect this access pointLog onto the IoT Timer (no password is required)Wait until your device is connected to the IoT Timer networkOpen up any internet browserIn the address bar, type in the following IP address - 192.168.4.1WiFiManager console will openSelect Configure WiFiA list with available WiFi networks points will be displayedSelect the required WiFi network, and type in the passwordNext, enter the IP address you want to use to connect to the IoT TimerEnter the Default Gateway IP address, followed by the maskOnce all the settings are done, click on the Save buttonA new window will open to confirm the new credentials were savedClose your browserQuestion 1:You can test to see if the relay board will work. Remember that the NodeMCU is a 3.3V device, so you will need an additional supply for your 5V relay.Question 2:Do not change these values. This is the default IP address of the IoT Timer for setup purposes. These values are NOT used to connect to your own WiFi router.I hipe this information will help you to get your IoT Timer up and running.Regards

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  • Eric Brouwer commented on Eric Brouwer's instructable I2C Relay Board11 months ago
    I2C Relay Board

    Thanks for your comments.The I2C relay boards can, and are used on a variety of systems, and not always on 220V. It was however designed for the following Instructable:https://www.instructables.com/id/8-Channel-Program...This relay board is the separate relay board, as you mentioned, for above project. The I2C was mainly used to reduce the number of wiring between the CPU board and relay boards.As with any project, especially projects working of mains, the user should take the necessary safety precautions when working on the system.RegardsEric

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  • Eric Brouwer made the instructable ESP8266 Wall Clock12 months ago
    ESP8266 Wall Clock

    I too wanted a bigger display. I made my own display using LED strips.

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  • 12V Battery State of Charge Indicator

    HiC3 and C4 is 0.1uf.Yes, the ATMEGA needs to be programmed with the code found under Step 6.RegardsEric

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  • Arduino Based GSM/SMS Remote Control Unit

    Hi vijukThe SIM800 module is old technology, and only works on 2G (2nd Generation) networks. Throughout the world, service providers are moving away from supporting 2G technology. It might be that Vodafone still supports 2G in your country, but BSLN does not.Glad to hear you got the project to work.RegardsEric

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  • ESP8266-01 IoT Smart Timer for Home Automation

    Hi AlessandroIf I have some spare time, I will see how to port this to the NodeMCU.I will keep you updated.RegardsEric

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  • Breadboard Friendly Tactile Switches

    Thanks for your feedback.Hope these switches helps you with development.Regards

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  • Arduino Based GSM/SMS Remote Control Unit

    Hi VijukI have tried to see what the difference between the SIM800A and SIM800L is, but did not get enough info.Their is a difference between the SIM800A development board, and the SIM800L board that I use. I do not know if this is the reaason.Regards

    In this project, I did not use any "SLEEP" or "LOW POWER" commands. The SIM800 module is always available.I have not detected this problem on any of my devices.REgards

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  • PIC 12F675 Programmer/OscCal Restore/Tester

    Thank you for your feedback.RegardsEric

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  • Arduino Based GSM/SMS Remote Control Unit

    HiYes, you will be able to test this circuit with the UNO.

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  • RC Delta Plane With Kfm3 Airfoil

    Interesting design. I like the placement of the propeller.

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  • White Oak Faced Powerful Passive Speakers

    Excellent job. Looks awesome!

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  • Eric Brouwer commented on chrisference_'s instructable DIY 3D Printed Clock1 year ago
    DIY 3D Printed Clock

    Well done. Nice and clean design.

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  • Eric Brouwer commented on Eric Brouwer's instructable I2C Relay Board1 year ago
    I2C Relay Board

    Hi apburnerGlad you liked it.The main reason I used I2C between the relays and main PC board, was due to output pin availability, and to reduce the number of wires.If I had to connect another 8 relays connected to the 23017 to a second board, I would have ended up again with 8 additional wires between the boards.Hope this answer your question.RegardsEric

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  • Eric Brouwer commented on MusaW's instructable Preview...1 year ago
    Preview...

    Well done. Excellent Instructable!

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  • Arduino UNO As AtMega328P Programmer

    From the photos, it seems as if you did not connect the RESET line between the Uno and PCB. Connect as follow:Arduino to Standalone chipArduino 13 - to pin 19 of target chipArduino 12 - to pin 18 of target chipArduino 11 - to pin 17 on target chipArduino 10 - to pin 1 on target chip (RESET)Hope this helps.RegardsEric

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  • Arduino UNO As AtMega328P Programmer

    Hi sggmI have few questions:- Did you select "Arduino/Genuino Uno" as your board?- Did you select the correct "COM" port?- Did you select "Arduino as ISP" as your programmer?- Did you upload the "Arduino ISP" code to your Uno board?If you were able to upload the "Arduino ISP" software to your board, the heartbeat LED will flash indicating that the programmer is ready.- Are you trying to program an ATMega328p chip?- Did you insert the chip correctly into the programming socket?- Is the power switch of the programmer on?This is indicated by the heartbeat and PWR led.- Are you able to burn the bootloader?If you can not get to this point, you will have to double check all your connections.Regards

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  • Send Notifications to Your Phone From an ESP8266.

    This looks awesome....:( :( But the app is not compatible with any of my devices :( :(Still using a Samsung Galaxy S3 on Android 4.3. This is the most likely cause.RegardsEric

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  • Time Scheduled Switch With ESP8266 and Blynk

    Hi MTKapp27Have a look at the following project. Maybe this can help.https://www.instructables.com/id/ESP8266-01-IoT-Sm...RegardsEric

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  • TRI DEMENSIONAL CHESS, Super Pocket Edtion

    Welcome to the Big Bang Theory :) :) :)

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  • Eric Brouwer made the instructable LED Lighting for Dremel Tool1 year ago
    LED Lighting for Dremel Tool

    Nice Instructable. I made a similar light some years ago for my Dremel drill press powered by a 9V battery.

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