[SOLVED]Power system of Crazyflie 2.0

[song]

Hi there!

I'm newly getting interested in drones, and I made my own board referring to Crazyflie(using your opened source and schematics) But it doesn't work well.

I use 'CONN_BAT' pin to supply power (3.7V/0.3A) and the result is very interesting.
When i supply power on my board, the voltage value decreases gradually. It goes down to 1.8V
I guess there's something that i don't know about power management(especially in BQ24075)

I already read all your posts especially 'Development board' on your homepage. I checked everything I can to find whether there's any fault on my B'd.

Could someone please help me to complete my new project?
Any suggestions will be a great help to me(about power system, boot system, etc.)

Thank you!

[tobias]

Very hard to tell what could be the problem. If you power it from VUSB instead what is the behavior? What voltage value are you referring to, the one in the cfclient?

[song]

First, i'm afraid of saying that i don't understand the exact meaning of 'behavior' you said. I tried to power it from +BATT.
and voltage value i said is from ''DC Power Supply" equipment. I don't use cfclient, i use only eclipse and Terminal Emulator menu from your VM.

[tobias]

So then something is probably short circuit and the current limit kicks in and that is why the voltage is dropping.