Re: Serial TTL, USB Communication - Sending ASCII Strings
Posted: Mon Jun 15, 2020 9:06 pm
If switching the current would only be the subject, yes then you are right.dunbarx wrote: Mon Jun 15, 2020 5:24 am It seems to me that four high current solid state relays (and you now must indeed choose AC or DC) ought easily to replace the motor and four position switch. The software would be far simpler and easier to manage.
Did you ever consider this? Reputable high voltage 50 Amp SSR's can be had for $10-20. You would just need to turn one of four on as needed, directly. Many more cycles, much more reliable, no mechanics. I have never used a Raspberry Pi, but I am sure they must have four output channels somehow, and my gadget has much more than that.
Craig
But this is about testing the mechanics of the actual rotary Position Switch with the rated current running through the contacts at the moment of contact. These switches are always manually handled. And are a part of a bigger sample or just being tested on it's own as a new product.
So the setup i'm working on is for testing of mechanical switches.
I'm sorry, maybe i was not clear about it.