I have setup as shown in the attachment 1 - an external device which outputs 4,8V and some small current.
I connect a Arduino Pro mini ( as shown in attachment 2) and the voltage drops to 2.2 V on the output of the external device.
Stuoid question - how I can still connect the Arduino Pro Mini without using another power source?
Any ideas what I can use so Arduino Pro Mini runs only from that external device ? Capacitors?
Thanks a lot for any tips