Foot Switch with Serial Port

Nihal Ahmed

Hello All,

I am working on a project(3.5) where i need to perform some operations with button Pressed of foot switch,

I am using SerialPort to Connect to the foot switch and capturing output from pinchanged event,

there are two buttons on my foot pedal, When right button is pressed my code works fine and

pinchanged event get fired But Its not working when Left button is pressed.

Please Help me, I am stuck here from two days.

3 Replies

Know the answer? Post it — somebody with the same question will find it here.

Vulpes12y ago
One simple thing you could try, if you haven't done so already, is to set both the DtrEnable and RtsEnable properties of the SerialPort to true (they're false by default) in case your foot switch is using these signals.

Failing that, I'd wait for the author of the article to reply in case he has any more ideas.
Nihal Ahmed12y ago
thats what my problem is, No Effect on pinchanged event or any other events like datareceived, errorreceived at all when i pressed left Button,pinchanged event get fired only if i press right button, so i checked my foot pedal device but its working fine, i dont know what to do now,
Please help me, i Spoke to the author of the post you advised but no reply. Please help.
Vulpes12y ago
When you say it's not working when the left button is pressed, do you mean that the PinChanged event is not firing at all or it is firing but the code isn't working correctly?

If it's not firing at all, then it may be a problem with the foot switch itself.

Otherwise, it may be that the PinChanged event is firing not once but two or more times.

I'd check out this article where the author has given up on the PinChanged event and is instead using timers to monitor the state of the pins:

http://www.codeproject.com/Articles/63849/Serial-Foot-Pedal-Device-Server