Senior Member
Joined: 19/06/2011
Location: AustraliaPosts: 265
| Posted: 08:34am 25 Jun 2011 |
[Where I show what a genuine hardware numpty I am]
I crimped an IDC connector to a 26 wire ribbon cable (red strip on the left, looking at the back of the Maximite).
I want to solder the wires to a block of single pin connectors (the same ones we got with the kit for jumpers). Then I can just push the block of pins into a prototype board, and see if I can get something interesting happening - like writing to an LCD panel.
A crimpable connector with pins that would push into a prototype board would be perfect. But I can't find one, so back to solder - unless anyone has a better suggestion.
I don't want to just solder the wires in the same order as the cable, I want them in the order of the ports. It will make things easier for me later. So I stripped the tips off some some of the wires and connected a multimeter (autorange, DC).
I ran the following:
10 for n = 1 to 20: setpin n, 8: next n ; set all pins to digital out
20 for n = 1 to 20: pin(n) = 1: next n ; set all pins high
From the left, the wires measure Ground, Ground, 3.3V, 5.0V - but then nothing.
I expected 5V between a high pin and one of the ground pins, but wire 5 and 6 show nothing. I didn't check any more.
Should I expect 5V?
Remember, I'm a numpty at hardware, so don't assume I know anything about it. But I'm going to learn, and the Maximite is the way I'm finally going to make something happen 'outside the box'.