Because the 3.3V output can't drive the base of Q1 high enough.Do you know why I can't get it to switch back and forth using the Odroid?
Are you saying that 5ma would be drawn down from the 5.6v battery and not from the Odroid?The downside is that there would be a standby 5mA current if the Odroid output stayed at 3.3V. So make sure its output is kept low whenever possible.
R1 should be about 4.6kkΩ not 10kΩ to give a base current of 1/10 of the collector current...................
Edit: Adopting Crutschow's suggestion, the top cap C1 can be 'borrowed' and paralleled with C2 to effectively double its value, like this:-
View attachment 81967
Yes.Are you saying that 5ma would be drawn down from the 5.6v battery and not from the Odroid?
by Jake Hertz
by Jake Hertz
by Jake Hertz
by Aaron Carman