Magnetic Bit-Kit

prusaprinters

<p>A set of magnetic clip frames for building electronic circuits with the BBC Micro:Bit. It includes battery case clip and mounts for other electronic components.<br><br>I re-designed my <a href="https://www.printables.com/model/208761-microbit-v2-clip-frame">previous attempt at a Micro:Bit case</a> (the notch was really starting to bug me). I reduced the thickness of the bezel and fixed-up the port arrangement to work with both the Micro:Bit v1 and the v2. I've added a parametric battery case clip and clips for a 1/4W resistor and a 5mm LED. The provided battery case design works well with the version provided in the v2 Go-kit, but it should be easy to adjust the clip for your battery case if its different. The Micro:Bit frame and the component clips have stand-offs to allow everything to be connected up using crocodile clips while attached to fridge (or other suitable surface).</p><figure class="media"><oembed url="https://youtu.be/uS7pAdJct2A"></oembed></figure><p>Building "blinky" (the embedded-engineering students answer to "hello-world") is pretty straight forward, but using the microphone and speech synthesis to re-enact 2001 was way more amusing; "Open the fridge door HAL" / "I'm sorry Dave I'm afraid can't do that".</p><p>Anyway, the OpenSCAD source has been provided (as well as the design files and gcode), so you should be able to easily customize the design for your needs if required. Hopefully the design parameters and code comments are self-explanatory.</p><p>Each clip requires 2 of 10 x 2 mm circular magnets save for the battery-case which requires 3 magnets. Just pop them into the print at the pause(s) and resume printing. The LED and resistor clips have filament changes inserted for the clip surrounds. On the LED clip the white crocodile clip surround layers print first and then the red. The battery case works well on my fridge but the light-weight magnets struggle a little to support the battery's weight on my white board. Note to self: get some chunkier magnets!<br><br>To fit the LED into its frame, it may need persuading gently with the tip of a screwdriver to get the LED past the internal retaining clips (long leg to the red side). The interior surface of the lead channels in the component clips are curved so it should be easy to pop the components in and bend the legs through the channel past the retaining teeth. Any excess lead can be trimmed away with side-cutters.&nbsp;</p><p>Have fun!</p>