DIY High-Speed Book Scanner from Trash and Cheap Cameras

FeaturedContest Winner

Step 71: Handle/Electronics: Looking Back

Picture of Handle/Electronics: Looking Back
The previous switch designs were electronically similar, but had some shortcomings. For that reason, I'm just going to show you some pictures and discuss them a little bit so you can benefit from my experience.

The first switch I made was entirely recycled. I had a switch and LED board from an old printer, two motherboard memory backup batteries (scavenged from bad motherboards) in series, and the guts of a broken USB hub. This design was bad for two reasons. One, it was mounted on the same arm as one of the cameras, so every time I took a picture I disturbed the camera position a bit. Second, those motherboard batteries are not cheap or easy to find if they need to be replaced. Finally, this circuit was a bummer because the LED rarely lit up. Still don't know why.
Remove these adsRemove these ads by Signing Up

Get More Out of Instructables

Already have an Account?


PDF Downloads
As a Pro member, you will gain access to download any Instructable in the PDF format. You also have the ability to customize your PDF download.

Upgrade to Pro today!