# Rewiring a drill motor to have forward/reverse and speed contol

Joined Jul 18, 2013
26,629
I
That is a really good point. I thought about that briefly but my head was still on the wiring lol. I am going to give this a go tonight, and if it works i will be so relieved. I put as much thought as i could, and

a decent amount of money out to get this right so I really appreciate you and the Dave taking time out of your day to help me get this right.

Max the Dimmer has a ground on it, so from what ive read i just ground that wire? You mentioned earlier that your sketch didnt include colour, but now that ive showed you the setup, could i humbly ask for you to add show the colours?
I added colours to the DWG yesterday.
Yes, just take the ground to preferably the service ground coming from your outlet.
Ignore the blue wire from the dimmer.
Max.

#### Dodgydave

Joined Jun 22, 2012
10,678
put the green wire to the plug earth pin.

#### jpickles77

Joined Nov 4, 2015
69
I

I added colours to the DWG yesterday.
Yes, just take the ground to preferably the service ground coming from your outlet.
Ignore the blue wire from the dimmer.
Max.
oh you attached a new drawing with colour? I didnt see it, i will go back and look.

#### jpickles77

Joined Nov 4, 2015
69
In comparing the 2 drawings the sketch Dave did is a little more simple for a rookie like me. Dave unless something has changed i will give it a go! I am really timid around this stuff and i put so much work into my profects that i dont want to see them fail. Also yesterday i didnt know allot of the terms you guys were putting on your drawings but now i have a better idea of the "lingo" All in all im so relieved, and thank you guys for your efforts, you have really made me a happy camper, ive been sitting on this project for months since i could not get any help. Im glad this site is here!

Joined Jul 18, 2013
26,629
In comparing the 2 drawings the sketch Dave did is a little more simple for a rookie like me.
They are actually essentially identical
Max.

#### jpickles77

Joined Nov 4, 2015
69
They are actually essentially identical
Max.

dont mind me, its just my rookie eyes

#### jpickles77

Joined Nov 4, 2015
69
i cant see the file you attached with the colours added though Max

#### jpickles77

Joined Nov 4, 2015
69
Ok then black plug to red motor, white plug to white motor.

Wire the dimmer in series with the black plug lead.

View attachment 94042
Just curious why did you colour the one "jumper" blue?

Joined Jul 18, 2013
26,629
i cant see the file you attached with the colours added though Max
Are you talking about post #11?
Max.

#### Dodgydave

Joined Jun 22, 2012
10,678
Just curious why did you colour the one "jumper" blue?
To highlight the different cross over connections, noticed you spell "colour" the right way with a 'U' ..

#### jpickles77

Joined Nov 4, 2015
69
Are you talking about post #11?
Max.

sorry I see the colour names on it, i was looking for the wire colours (sorry working while i do this)

#### jpickles77

Joined Nov 4, 2015
69
To highlight the different cross over connections, noticed you spell "colour" the right way with a 'U' ..
lol thats just the way im used to writing it lol. Im from Ontario Canda, how about you guys?

#### Dodgydave

Joined Jun 22, 2012
10,678
Click on my name to see.....my logo gives a big clue...

#### jpickles77

Joined Nov 4, 2015
69
Click on my name to see.....my logo gives a big clue...

ahh i see! Know anyone with the last name Pickles? Thats mine, and Great Britain is where my family came from. Hey do you have any knowledge on making tachometers? I want to be able to read the RPM's on my metal lathe, but i have no idea on how to do this. I would love to have a digital red read out showing me how fast its going.

#### Dodgydave

Joined Jun 22, 2012
10,678
Yes, you need to make a frequency to voltage converter using a LM2917 or 555 timer, or frequency counter using a microcontroller like pic, or Arduino, you probably can get one ready made on ebay.

#### jpickles77

Joined Nov 4, 2015
69
Any idea how i could make this? it doesnt seem too hard, i just do no know what the name of the parts are.

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Joined Jul 18, 2013
26,629
Thats mine, and Great Britain is where my family came from. Hey do you have any knowledge on making tachometers? I want to be able to read the RPM's on my metal lathe, but i have no idea on how to do this. I would love to have a digital red read out showing me how fast its going.
I am another Canadian that hails from the UK originally.
Max.

#### jpickles77

Joined Nov 4, 2015
69
I am another Canadian that hails from the UK originally.
If you can uses a hand held tach, the ones you can get for ~\$15 are very good, search DT-2234 there are lots out there.
Alternatively there are permanent ones on ebay that you need to apply a optical or hall sensor for the read pulse.
Max.
tell me more please. Much like this power feed project, i want to make custom additions to my lathe, and cool lights too. I would love to have a nice bright blue or red digital read out for the RPM speed. Any advise you guys could give me would be welcomed.

#### Dodgydave

Joined Jun 22, 2012
10,678
Thats an opto sensor and led, it gives out a beam of light and gets reflected on the white painted dot, gives 1 pulse per rev, you still need a counter.