Bazmundi
commented
3 years ago This was actually related to ESPHome in the end, and oddly related to a problem #405 of ESPHome, where t-camera v1.6.2 would get into a boot loop if camera code was included. A number of pins needed to be pulled up with pinMode(x, INPUT_PULLUP) to fix the boot loop. With the pins setup this way, the t-camera board seems to also now boot on the battery shield without fail. Pins in question 12..15. Noting, depending upon your physical t-camera board, the boot problem was better or worse. I only picked my way through this because I have two boards and they behaved oddly differently, which makes sense if its something around EMI. The fix for ESPHome actually came from this code base, well done.
haldi4803
Information for t-camera users.
I have Wemos 18650 single battery shield. I have a t-camera v1.6.2. The t-camera works fine hung of a PC via a powered USB hub. The t-camera does not appear to want to start up when connected to a fully charged single battery shield.
I have checked voltages etc. Voltages present and correct.
The battery shields are sold as "ESP32 shields" but is the problem an amperage thing, seems it might be? Is this a noise thing?
Understanding there appear to be multiple versions of the single battery shields, there are no markings on the shield to tell me what version it is.