ESP8266 Community Forum

- Mon Dec 26, 2016 2:04 am #59963 i have a big problem, the ports of my esp8266 don't work! I tried with the simple "blink" example but the esp doesn't control the ports, it keep making "wdt reset" , why? I tried reflashing the sketch , changing port, calling ESP.wdtDisable() function without any result My original idea was simply to connect a relay to control a light with internet, but if i can't control ports is impossible to control a relay
can anyone help me?

- Mon Dec 26, 2016 8:28 pm #59995

I tried reflashing the sketch , changing port...

So, the Arduino IDE is being used for reprogramming - you do realize that if you can reprogram the ESP8266, then at least two I/O pins are working!

If you are trying to blink a LED, did you use a proper current limiting resistor? Overcurrent (drawing too much current) can cause a reset.

For the ESP8266 to work properly, a well-regulated 3.3Volt supply needs to be used, one that will not droop with 750mA to 1A of current is being drawn.

Ray

Next time: Respond in the forum with specific info:
- What model ESP8266 board
- What version of the Arduino IDE
- your PC operating system
- How are you powering the module
- and if you want feedback specific to your software, the entire sketch