Hi - I am a hack at this stuff and could use some help
I am building a device that integrates a commercially available PWM frequency and duty cycle generator mini-board (e.g., one of these:
https://www.amazon.com/Eachbid-1Hz-150Khz-Frequency-Adjustable-Generator/dp/B07CG9VYDN ).
The above PWM generator outputs three different duty cycles. My device use one of these at a time, and includes a circuit to select an output.
What I want: the above PWM circuit always displays the last preset that was adjusted. When I switch from one preset output to another, I want to bump this display by momentarily closing the "-" contact for that preset, which will prompt the PWM display to change to match the chosen output. Due to the way the board is constructed I will probably need to solder individual leads to the three "-" tactile switch contacts to interact with the device. It's a complete hack and I'm open to a better idea, but even the hack would be worth it if it worked smoothly. I just don't know how to momentarily close the second contact.
Any suggestions on how to make this work? The simpler the solution, the better.
Thanks!
I am building a device that integrates a commercially available PWM frequency and duty cycle generator mini-board (e.g., one of these:
https://www.amazon.com/Eachbid-1Hz-150Khz-Frequency-Adjustable-Generator/dp/B07CG9VYDN ).
The above PWM generator outputs three different duty cycles. My device use one of these at a time, and includes a circuit to select an output.
What I want: the above PWM circuit always displays the last preset that was adjusted. When I switch from one preset output to another, I want to bump this display by momentarily closing the "-" contact for that preset, which will prompt the PWM display to change to match the chosen output. Due to the way the board is constructed I will probably need to solder individual leads to the three "-" tactile switch contacts to interact with the device. It's a complete hack and I'm open to a better idea, but even the hack would be worth it if it worked smoothly. I just don't know how to momentarily close the second contact.
Any suggestions on how to make this work? The simpler the solution, the better.
Thanks!