ESP-01 does not start reliably
Posted: Mon May 18, 2015 12:03 pmHowdy
I have a strange problem.
In my setup I have ESP-01 flashed with firmware from: https://github.com/tangophi/esp8266_iot_enabler
(This happens with any firmware, not just with that one)
It has DHT-22 sensor connected.
When it boots up properly, everything works. My mqtt-broker receives temperature and humidity readings and ESP receives relay messages as it is supposed to.
I have putty running in Ubuntu-PC connected to ESP via TTL232RG VIP-WE cable.
http://www.ftdichip.com/Support/Documen ... CABLES.pdf
ESP is powered by a good lab power supply.
Problem is: my ESP does not start every time I connect power.
Sometimes, not too often, it starts up right away, prints out debug messages via putty and starts publishing mqtt messages.
Usually it just spews out some gibberish, just few characters, and then freezes.
I have tried reflashing it, I have replaced the ESP-01 with new one. Twice.
I have added capacitor to power lines.
Nothing helps.
I have measured the voltage. Exactly 3.3V.
Current is no problem, unless it needs more than 10A. (Just joking)
Any idea what could be the problem? I am running out of ideas.
I have a strange problem.
In my setup I have ESP-01 flashed with firmware from: https://github.com/tangophi/esp8266_iot_enabler
(This happens with any firmware, not just with that one)
It has DHT-22 sensor connected.
When it boots up properly, everything works. My mqtt-broker receives temperature and humidity readings and ESP receives relay messages as it is supposed to.
I have putty running in Ubuntu-PC connected to ESP via TTL232RG VIP-WE cable.
http://www.ftdichip.com/Support/Documen ... CABLES.pdf
ESP is powered by a good lab power supply.
Problem is: my ESP does not start every time I connect power.
Sometimes, not too often, it starts up right away, prints out debug messages via putty and starts publishing mqtt messages.
Usually it just spews out some gibberish, just few characters, and then freezes.
I have tried reflashing it, I have replaced the ESP-01 with new one. Twice.
I have added capacitor to power lines.
Nothing helps.
I have measured the voltage. Exactly 3.3V.
Current is no problem, unless it needs more than 10A. (Just joking)
Any idea what could be the problem? I am running out of ideas.
