Make your own mini-humbucker pickup from a scrapped electric toothbrush

Question: what do you do with a “wirelessly” re-charged electric toothbrush when its battery eventually dies?

Answer: salvage the tiny induction coil from inside the sealed body of the toothbrush handle. It’s ideal for making your own pickups. All it needs is a magnetic core and some patient, fine wiring work.

I glued a stack of a few 12mm diameter molybdenum magnets inside the coil’s bobbin, using a quick-setting epoxy resin. The results from a single coil pickup were so pleasing that I added a second, arranging the opposing magnetic senses and observing the required electrical polarities in order to make a mini-humbucker. I marked the magnets and the wires with red and black Sharpie pens to keep the assembly on track. The hardest part for me was stopping the fierce wee magnets from clumping together, so I used small clamps and glued them to a baseplate at two different times.

There are plenty more detailed photos in this shared Google Photos album of mine which might inspire you build your own version:

https://photos.app.goo.gl/i7Srwm8NHam78wHCA

Have fun!




Views: 96

Comment

You need to be a member of Cigar Box Nation to add comments!

Join Cigar Box Nation

Comment by BrianQ. on Sunday

Peter, did you measure the resistance of the pickup, is it loud?

Comment by Peter Bryenton on April 9, 2021 at 4:30am

My thanks to the anonymous pick for listing potentially useful sources of small coils. When the UK allows car boot sales to re-open, I'll be rummaging through some piles of old stuff {:/)

Comment by the anonymous pick on April 8, 2021 at 5:08pm

Very cool .  Vintage  electric razors ,  buzzer type door bells , some small fire bells  ,  old tattoo machines ,  aircraft headphones, wallwarts,   all have use-able  coils and parts too.

lots of fun to be had ;-)

 

Comment by Peter Bryenton on April 8, 2021 at 10:47am

Thanks Ray.

The coil which I salvaged is freely accessible inside the body of the toothbrush itself, not the one in the charger base unit. That's where I too was nearly stymied by all that potting compound resin. Then I realised that there had to be a "receiving" partner coil to enable the inductive charging energy transfer between base and handle.

I used what we in the UK call a junior hacksaw to carefully cut around the 2mm thick plastic casing. There's a photo of an open example in that album I linked to in the original post.

I'll be interested to see how you get on.

Comment by Southern Ray on April 8, 2021 at 10:38am

 Very cool. Big fan of alternative pickups.

I have a charger for  a brush, but under the plastic case, the electronics are encased in some sort of resin. Was yours encased like this and if so, how did you get it out of it? Thank you!

The Essential Pages

New to Cigar Box Nation? How to Play Cigar Box GuitarsFree Plans & How to Build Cigar Box GuitarsCigar Box Guitar Building BasicsCigar Box Guitar Parts Store

Site Sponsor

Recommended Links & Resources


Forum

String query

Started by Michael Myers in Building Secrets, Tips, Advice, Discussion. Last reply by Michael Myers Apr 6. 3 Replies

CallyFest 4

Started by Richard Sundberg in Fests and Concerts: Organizing and Promoting. Last reply by Southern Ray Mar 19. 46 Replies

Latest Activity

Dave Lynas liked Scotty Bolton's video
1 hour ago
Dave Lynas liked the anonymous pick's video
1 hour ago
Dave Lynas liked Anthony Insetta's video
1 hour ago
Dave Lynas commented on Anthony Insetta's video
Thumbnail

A Lil Diddy

"Wonderful Anthony. Slickerish, quickerish, magic."
1 hour ago
Dave Lynas liked A.D.EKER's video
1 hour ago
A.D.EKER commented on AGP #'s video
Thumbnail

AGP #424 Modified “Balikpapan Chugger” Sound Sample Medley

"There is a distinct  diverens ! Oyea less feedback and more sustaine ,and all because you put…"
1 hour ago
A.D.EKER commented on A.D.EKER's video
Thumbnail

Home Groove BCB One Man band 2021

"On the prawl ! dont you have the feeling that you are there when you watch the video? somehow it…"
1 hour ago
A.D.EKER commented on A.D.EKER's video
Thumbnail

Home Groove BCB One Man band 2021

"hayá AGP# ! thanks for the like ! Appriciated !"
1 hour ago
A.D.EKER commented on A.D.EKER's video
Thumbnail

Home Groove BCB One Man band 2021

"thanks Keith ! appriciated !"
1 hour ago
BrianQ. replied to Paul Craig's discussion What's on your workbench?
"Speaking of “on the bench” I got these old pedals on the bench for true bypass &…"
4 hours ago
Southern Ray liked T-Gripped's photo
4 hours ago
Southern Ray commented on Peter Bryenton's blog post Make your own mini-humbucker pickup from a scrapped electric toothbrush
" Great thread! I learned a lot from this one. Brain hurt."
4 hours ago

Music

© 2021   Created by Ben "C. B. Gitty" Baker.   Powered by

Badges  |  Report an Issue  |  Terms of Service

\uastyle>\ud/** Scrollup **/\ud.scrollup {\ud background: url("https://storage.ning.com/topology/rest/1.0/file/get/963882636?profile=original") no-repeat scroll 0 0 transparent;\ud bottom: 25px;\ud display: inline !important;\ud height: 40px;\ud opacity: 0.3 !important;\ud position: fixed;\ud right: 30px;\ud text-indent: -9999px;\ud width: 40px;\ud z-index: 999;\ud}\ud.scrollup:hover {\ud opacity:0.99!important;\ud}\ud \uascript type="text/javascript">\ud x$(document).ready(function(){\ud x$(window).scroll(function(){\ud if (x$(this).scrollTop() > 100) {\ud x$('.scrollup').fadeIn();\ud } else {\ud x$('.scrollup').fadeOut();\ud }\ud });\ud x$('.scrollup').click(function(){\ud x$("html, body").animate({ scrollTop: 0 }, 600);\ud return false;\ud });\ud });\ud \ua!-- End Scroll Up -->