BCD switch..... more
Posted: 20 Nov 2012, 17:18
I found one at RS with 10 positions,327-939, stoppable downable (eh?) to 8.
There are good things and bad things about it but it's the only one I've found with 8 positions. ( apart from a monster industrial one that even blind man Robbo couldn't fail to see)
I don't like those hexadecimal switches.
It's not too expensive at around £5.
It's compact.
But......... it's a PCB mount type which means its connections are a bit weedy. I got round this by mounting it into a piece of veroboard.
It has 14 connections from A to N and the data sheet that you can download is complete gobbledegook. It's also wrong so I had to do a truth table on it last night and here are the connections if anyone wants to use it.
The switch connection D goes to the etap bcd connection A ( S0)
Conn. B goes to etap B (S1)
Conn . I goes to etap C (S2)
Link EFGLMN for the common connection.
Hope it helps someone.
Cheers
Ecca
There are good things and bad things about it but it's the only one I've found with 8 positions. ( apart from a monster industrial one that even blind man Robbo couldn't fail to see)
I don't like those hexadecimal switches.
It's not too expensive at around £5.
It's compact.
But......... it's a PCB mount type which means its connections are a bit weedy. I got round this by mounting it into a piece of veroboard.
It has 14 connections from A to N and the data sheet that you can download is complete gobbledegook. It's also wrong so I had to do a truth table on it last night and here are the connections if anyone wants to use it.
The switch connection D goes to the etap bcd connection A ( S0)
Conn. B goes to etap B (S1)
Conn . I goes to etap C (S2)
Link EFGLMN for the common connection.
Hope it helps someone.
Cheers
Ecca