debug battery powered node
I have sometimes tempertures nodes, powered by batteries, which are freezing ... If I reboot the node, all is working correctly ...
How can I debug it ? If I connect the node to my computer, it will change the power input, so if it's a power related issue, I will not see it ...
Do you have any idea ?
Why not just connect the rx and tx pins and ground?
This is how I debug my battery based sensors and run them from the battery. You even dont need the rx pin if you don't want to send commands to the node.
I didn't know it was possible !
So : Vcc and GND from the battery, and TX, RX and GND to my usb serial adapter ?