Wearable Breadboard Holder for the Forearm

This wearable breadboard holder allows to place a standard breadboard in it and to Velcro-attach it to the forearm. Our design can be particularly useful in school and public outreach workshops when ideas involving sensors need to be tested quickly and worn on the body (e.g., control a robot arm with a bend sensor, see photo). All what you need is a 3D-printer, a suitable breadboard, some elastic tape and Velcro.

Required Materials

To fabricate your own wearable breadboard holder you need the following materials:

Large Breadboard

Size: 165.1 x 54.6 x 10 mm (L x W x H)
In our projects, we use TRU COMPONENTS Breadboards (SKU: TC-12111536)

Velcro Tape

Cuttable self-adhesive Velcro tape with two parts (hooks and loops).
Velcro fasteners are available in many sewing shops and online.

Elastic Band

Width: 40mm
Material: Polyester, black
Elastic bands are available in many sewing shops and online.

Required Tools

3D-Printer (for fabricating the holder)
Scissors and lighter (to seal the cut elastic polyester band)
Needle and thread or sewing machine (to fix the band and Velcro)
double-sided adhesive tape if needed (to fix the breadboard)

Step-by-Step Instructions

Print: 3D-print the holder case and remove support material if needed.
Breadboard: Attach the breadboard to the holder (use double-sided adhesive tape if needed).
Elastic Tape: Cut the elastic tape to a suitable length by testing it with your arm.
Hint: Seal the cut tape with lighter to ensure that the band does not fray.
Thread the ribbon through the holder and sew it in place.
Velcro: Attach the self-adhesive Velcro tape to the ribbon band.
Hint: Since the Velcro tape is not elastic, use just a smaller piece.
Secure the positioned Velcro fastener by sewing it on the tape.
Hint: Only the adhesive will not hold, as forces act on the Velcro tape..
Done: Start putting your idea into practice.

Concept & Design: Konstantin Klamka, Judith Flurer; Barkhausen Institut
Photos: Rafael Vinz, Konstantin Klamka