Footpedal Speedcontroller




Introduction: Footpedal Speedcontroller

About: I wouldn't say I'm a knowitall but people who know me ask me before they Google

I've converted a cordless drill and an ancient pedal from a sewing-machine to work with my cordless powertools in order to have a better drill/screwdriver/polisher/etc and my workbench.

Step 1: What I Used .. What You'll Need.

1. cheap cordless drill
2. scavenged pedal from sewingmachine
3. misc. screws, cableties, contactcement etc

Step 2: At the Heart ..

.. of it is the controller from the drill.
You'll have to take your own apart and there's plenty of information on that so I won't show any.

Step 3: Taking the Speed Controller Apart ..

.. You may need to separate the controller into its various parts but be warned:
The little controller is all surfacemount wierdness and the chances of getting it back together are slim so don't break open any of the plastic. Just separate the switch from the controller.
Also make sure to note position and connections of all cables.

Step 4:

After gutting the pedal I pulled four cables in:
+/- (Black/Red) from the battery/powersource
2 orange from the controller to the forward/reverse-switch

Step 5: Forward/Reverse, Battery, Motor and Testdrive.

I put the F/R-switch between the cables from the controller and the cables to the motor on a basic connector.
It's a good idea to oversize things a bit since you never know how much power you might one day be pulling of this.
The whitesocket is connected like this:
Switch out1 <-> To Motor1
Switch out2 <-> To Motor2
Powe out1 <-> Switch in -
Powe out2 <-> Switch in +

Step 6: That's Pretty Much It .. and Other Final Thoughts

I imagine there's any number of uses for this hack such as:
Build an electric car for a kid with a real gas-pedal
Controll a mini-lathe with your foot
Gas-pedal for electric car

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    6 Discussions


    3 years ago

    Can't identify the foot pedal. A standard sewing machine unit doesn't have a spring, only a wiper assembly. Any advice on what type/mfg this pedal is?



    3 years ago

    Great idea, exactly what I need for my mouse sander! :¬)


    9 years ago on Introduction

    I tried to use a similar idea to power a lathe but I found the speed control was not smooth. You did nice job with the instructable for the foot pedel.


    Reply 9 years ago on Introduction

    Thanks. Yeah, I've noticed that to. I think it's the cheap controller so prolly you could use a better one.


    10 years ago on Introduction

    I assumed you'd be adding a footpedal into the power cord of an off-the-shelf rotary tool- this is much cooler! Just the DIY rotary tool made from the guts of a cordless drill would merit its own Instructable.


    Reply 10 years ago on Introduction

    Thanks, I'm glad you like it :) Yeah, I imagine this would be useful for all sorts of stuff. The rotary tool is really easy, just unscrew everything else and there it is.