OH-58D-MFK

Work in progress

This project is still work in progress. Print and assemble at your own risk.

BOM

• 1 x 7x5cm PCB prototype board
• 1 x AZDelivery Pro Micro ATMEGA32U4
• Heat Set Inserts M3x3 (short)
• 51 x Diode SMD 0805 1N4148
• 9 x Resistor SMD 0805 10K
• 47 x OMRON B3F-115x Tactile Switch
• 2 x Switch cover
• 2 x Switch ON/OFF
• 1 x Switch (ON)/OFF/(ON)
• 1 x Texas Instruments CD4094BE shift register
• Break away pin headers
• Wire
• Dupont crimping tool and connectors
• M3 and M4 screws

3D printed parts

You can find the CAD files on Onshape. Currently you need to export the Onshape parts to get printable STLs files.

License

Except where otherwise noted, this work © 2025 is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.