Meshtastic Router based on the Heltec HT-CT62 and TI BQ25185

Development Hardware
41

After running v0.6 for a while I learned new things.

  1. If power supply of the 3.3V-LDO drops below ~3.4V it breaks down to 0.4V almost immediately. Too fast for the ESP32 Brown-Out-Detection to trigger. This problem causes data loss with the integrated filesystem.

  2. For v0.7 I most likely will insert a reset IC that monitors the voltage before the LDO (as this is the battery+solar voltage mix that “moves” slowly with the battery). If the voltage drops too deep it will disable the EN pin of the HT-CT62.