brownrb - 2019-01-13

on the uln2003 sub- board you would need to not jumper the vcc to the vcc pin on J9 of the pcb, but wire it to the 12v external power instead.

On Sun, 1/13/19, Alex H pianoplayer5@users.sourceforge.net wrote:

Subject: [arduinoascomfocuserpro2diy:discussion] Re: My Build and Advice
To: general@discussion.arduinoascomfocuserpro2diy.p.re.sourceforge.net
Date: Sunday, January 13, 2019, 7:01 PM

Yup you're
correct, I power the entire board with the output 8V from
the 7808 regulator, and since the power of the ULN2003 board
is part of the PCB (VCC), it is also powered in turn by the
7808 chip. Should I run into problems with this setup,
I'll look at rerouting the 12V in to the ULN2003 driver
board without the 7808. So far so good, however!
I don't see how I would do this though, because the
VCC pin on the arduino is directly connected to the ULN
power lead on the PCB. I'll investigate this further
should any issues arise. Thanks!!

My
Build and Advice

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