Yes, the current for the entire board is above 90uA.
So it seems a correct current.
This will be a battery powered device such an ultra low power.
While both mcu and module in sleep, the current for the entire board must be not more than 10uA. But now it’s above 90uA.
Please discard my measurements !!
Try a quick test/breakout board for RAK4200 smd module;
VCC PIN: 3.3V
GND PIN’s: all GND
RESET PIN: 10K pull up and 100NF pull down.
TX PIN: 10K pull up (may not be neccessary)
RX PIN: 10K pull up
Let’s put the module into sleep.
Connect TX pin of a serial adapter to the module’s RX PIN.(And GND wiring needed.)
Send at+set_config=device:sleep:1 to module.
Now module in sleep.
Also remove serial adapter.
Measure the supply current into VCC PIN is about 1.5uA.
And measure the total current of the test board is near 90uA.
Why and how to solve this ?
Note: Without a serial adapter and AT command, module goes to sleep automatically if could not joined to network.
Firmware Version: RUI v220.127.116.11