I'm currently working on a developmentboard for the 16F628 PIC. I've made the schematic, placed components on the board, and etch the PCB. And as far as I know, its working. Schematic is here.
Criteria:
But:
In another thread:
http://forum.allaboutcircuits.com/showthread.php?t=50463
I'm learning a bit about transistors and resistors. And when I think of it, we used transistors and resistors here:
http://forum.allaboutcircuits.com/showthread.php?t=49520
So my question is:
Should I have resistors connected to the transistors base like in the 25 Open end LED chaser?
And how would I calculate the resistance?
Any comments are welcome.
Criteria:
- Should have ISCP, so I don't have to move the chip back and forth.
- LEDs on all the PIC pins, to indicate activity
- Row of pins to be able to get input
- Row of pins to extend with cable to hook up on breadboard
- Provide breadboard with 9-12v dc
But:
In another thread:
http://forum.allaboutcircuits.com/showthread.php?t=50463
I'm learning a bit about transistors and resistors. And when I think of it, we used transistors and resistors here:
http://forum.allaboutcircuits.com/showthread.php?t=49520
So my question is:
Should I have resistors connected to the transistors base like in the 25 Open end LED chaser?
And how would I calculate the resistance?
Any comments are welcome.