What microcontroller or relay to use to control 120v tools with these rocker switches?

Thread Starter

artvandalai

Joined May 30, 2024
27
I'm looking for simple alternative to this type of inline foot switch with a more organized way to conveniently control a few
devices individually under 5 amps like a soldering iron, exhaust fan, desk lights. What type of microcontroller or relay would I need to control inlineon/off 120v ac appliances with these type of 12v rocker switches? gMQNRyCs2.png
 

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Sensacell

Joined Jun 19, 2012
3,767
Define this a bit more?
It's not really clear what you want to accomplish.

You want to switch things on and off with your foot?

How about a latching pushbutton switch and a pilot lamp?
 

AnalogKid

Joined Aug 1, 2013
12,043
First, that is not a footswitch. Second, why not use switches rated for 120 V operation?

If you want to control 120 Vac loads with 12 Vdc signals, then simple relays will work. You wouldn't need a microcontroller unless the loads were to be controlled by combinations of the switches. Even then, uC would be overkill.

ak
 

Thread Starter

artvandalai

Joined May 30, 2024
27
Define this a bit more?
It's not really clear what you want to accomplish.

You want to switch things on and off with your foot?

How about a latching pushbutton switch and a pilot lamp?
I was looking for a organized way to control multiple 120v ac devices individually with this 12v rocker switch box used in automobiles. I would prefer not to use those bluetooth or wifi controller devices for this.
 

AnalogKid

Joined Aug 1, 2013
12,043
If you want the control switches located away from the power switching, you need a 12 Vdc power source and three SPST relays with 12 Vdc coils.

The relay contacts must be rated for at least twice the largest load device.

The 12 Vdc source must be rated for at least twice the *total* of the three relay coil currents. It can be a wall wart or a small pc-board assembly.

Everything here can be done with small modules from ebay or amazon. The relays are on small pc boards with mounting holes and connectors for the inputs and output. All point-to-point wiring, zero soldering.

ak
 
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