Hi all! First post
I wonder what switching thresholds are for program selection pins.
This is because I'm driving them through some diodes, so "tie to ground" is still about +0.5V.
Should it work?
Why diodes: to be able to select combinations through a single deck 1x8 rotary switch.
Program selection pins - Switching voltage values
Moderator: frank
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- Posts: 4
- Joined: Tue Jul 15, 2014 3:11 am
- Location: Italy
- Contact:
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- Posts: 4
- Joined: Tue Jul 15, 2014 3:11 am
- Location: Italy
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To close the thread, I got it working perfectly.
- Program selection pins connected through pull-up 20k resistors to V+
- A 1->8 rotary switch selects a program. Its input pin to ground.
- Each output pin is connected, through low-signal diodes, to a sub-group of program pins
Presence of a diode in a combination is "1"
Absence is "0"
- Program selection pins connected through pull-up 20k resistors to V+
- A 1->8 rotary switch selects a program. Its input pin to ground.
- Each output pin is connected, through low-signal diodes, to a sub-group of program pins
Presence of a diode in a combination is "1"
Absence is "0"