Salter Kitchen Scales - How Do They Work

Somehow the display got broken on our kitchen scales. Given the ridiculously low price of new ones, they are not worth repairing.
I've always been curious to know how the work so lets take them apart and find out.

[@johndoyle5213]

Helped me out.
Thank you for making the video.

[@TripplikitElectronics]

Glad you found it interesting. I'd always wondered how electronic scales worked.

[@richardwallace2458]

Thank you sir, great video.

[@TripplikitElectronics]

Glad you liked it.

[@bradgoldthorp8667]

Thanks for the video. Couldnt find a way to open it up. Sneaky hidden screws. Cheers

[@TripplikitElectronics]

As you say - sneaky hidden screws. Just not intended to be repaired.

[@arfski]

Useful for that extra screw that I missed. As an aside, strain gauges are transducers so you should have you meter on volts not resistance.

[@TripplikitElectronics]

Yes that screw is easy to miss. Strain gauges are basically just resistors so, yes, when the scales are powered up you should measure voltage. However, with the strain gauge disconnected, you can only measure resistance. Actually, to get a real reading out of them you need a special amplifier.

[@bobiq]

what's the point of this video if you didn't fix anything? lmao

[@TripplikitElectronics]

I took them apart because I was interested to see how they worked. New ones are only £10 so they were never going to economical to repay. Throw away world!