Rotary Switch

Discussion and Support for MoTeC's M1 series ECUs

Rotary Switch

Postby rayhall on Wed Aug 19, 2020 11:53 am

Hello,
Is there information on making a six position rotary switch. Looking for recommendation of resistors values to use.
Ray
rayhall
 
Posts: 107
Joined: Fri Jul 15, 2011 7:54 am

Re: Rotary Switch

Postby David Ferguson on Wed Aug 19, 2020 3:35 pm

If you used seven 1k (anything between 500 ohms and 2k would probably work OK) resistors. Use one between 5V and the first terminal, one between each switched terminals, and one between the last terminal and 0V. The output signal would measure in equal voltage steps, and allow detection of a broken wire with either a high or low voltage (depending upon which wire failed).
David Ferguson
Veracity Racing Data
David Ferguson
Pro User
 
Posts: 1362
Joined: Fri Nov 07, 2008 2:45 am
Location: Paso Robles, California

Re: Rotary Switch

Postby rayhall on Thu Aug 20, 2020 1:18 pm

David,.
Thank you.
Ray
rayhall
 
Posts: 107
Joined: Fri Jul 15, 2011 7:54 am

Re: Rotary Switch

Postby rayhall on Thu Aug 20, 2020 2:44 pm

Found this on line which takes out most of the thinking.
Attachments
rotary_resistors.png
rotary_resistors.png (63.99 KiB) Viewed 4925 times
rayhall
 
Posts: 107
Joined: Fri Jul 15, 2011 7:54 am


Return to M1 ECUs

Who is online

Users browsing this forum: Bing [Bot] and 31 guests