No sign of life from: ESP32-pico-V3-02
Posted: Fri Jun 09, 2023 10:28 am
I often use the ESP32-pico-V3-02 in various circuits and have not had any problems communicating with the device.
Now I have a circuit board with this IC, where no communication is possible at all, I tried it on 3 identical circuit boards to rule out any hardware or soldering errors. Apart from the blocking capacitors and the RC at the reset input, there are no other components that, in my opinion, can influence the start of the ESP. After applying the 3.3V supply, the ESP only consumes minimal current (approx. 1mA) and there is no life message via RX. There is a maximum of one undefined signal (PWM start?) when applying/switching off the supply.
I have made changes to the RC element of the reset pin, all without success.
Presumably the ESP won't come out of reset state, or what could be the reason for the behavior?
Now I have a circuit board with this IC, where no communication is possible at all, I tried it on 3 identical circuit boards to rule out any hardware or soldering errors. Apart from the blocking capacitors and the RC at the reset input, there are no other components that, in my opinion, can influence the start of the ESP. After applying the 3.3V supply, the ESP only consumes minimal current (approx. 1mA) and there is no life message via RX. There is a maximum of one undefined signal (PWM start?) when applying/switching off the supply.
I have made changes to the RC element of the reset pin, all without success.
Presumably the ESP won't come out of reset state, or what could be the reason for the behavior?