ESP8266 Community Forum

- Wed Jun 29, 2016 1:41 pm #49965 Any ideas on the above? I have moved back to the ATMEGA versions of both this and the PIR sensor but would like to get to bottom of the issues if poss.

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- Wed Jun 29, 2016 4:22 pm #49973

Well not able to admit defeat I spent some time over my lunch break and found out that in the case of the barebones version it was the pullup resistor, if I removed the resistor and connected the middle leg to 3.3v directly it worked.

Following this I reset up the ESP into the circuit and I now have strange issues, I cannot upload without GPIO2 connected directly to 3.3 without resistor and then the relay will not turn on without the 3.3 being removed, then after that I cannot reset without it connected.

It also keeps crashing serial monitor when the light is connected to the relay and I have to restart the computer.

Hi, you need an opto-coupler if you going to switch mains or you'll just run into a whole world of pain. It will also cure most of the boot and reset issues as well, the only down side is random switching at boot and that can be fixed.

- Wed Jun 29, 2016 6:49 pm #49979 Thanks will do, what type would be a good place to start, I have completed this project using ATMEGA now enough to have first prototype ready, just need to do optimizing and work on the power side but would be happy to be able to move forward with v2.

Amazing selection of ESP8266 and ESP32 modules can be found here.

- Thu Jun 30, 2016 2:17 am #49984 Here is a video of V1 if anyone would like to check it out...

[youtube]https://www.youtube.com/embed/APoJoaRtRZw[/youtube]

Amazing selection of ESP8266 and ESP32 modules can be found here.