I have one/or more hardware issues.
I'm using ATZB-A24-ULF modules. I've done my own PCB design similar to Meshnetics MeshBean AMP board (TPS63001DRC DC-DC).
In past few weeks I've "damaged" 3 modules. I use USB power supply 5.15 V, I measure voltage on module 3.31 V.
I think problem happens whan I plug in USB power supply.
I'm able to recognize(read signature) and program module via JTAG correctly, I uploaded my own app(not using Zigbee network) to trigger some ports and read RTC and send RTC data over USART, everything works, but I can't start network. I think problem is with RF chip AT86RF230.
I through 1 module away, but guess what, other two modules started started to work !
Did anyone have similar problem?