System-End/hackpad
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hackpad/hackpads/cyrilli_hackpad
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Cyril Li 5383e93c97 fw
2024-10-21 22:11:42 -05:00
..
cad add files 2 2024-10-21 00:01:00 -05:00
firmware fw 2024-10-21 22:11:42 -05:00
pcb add files 2 2024-10-21 00:01:00 -05:00
production add files 2 2024-10-21 00:01:00 -05:00
README.md files v2 2024-10-21 21:55:29 -05:00

README.md

cyrilli_hackpad

BOM

Please confirm in PR comments if a substitute part is to be used.

  1. 1x Seeed Studio XIAO RP2040
  2. 11x Cherry MX Switches
  3. 1x EC11 Rotary Encoder
  4. 16x Through-hole 1N4148 Diodes
  5. 3x 100nF Ceramic Capacitors (Decoupling)
  6. 2x TP2104N3 Logic-level PMOS (May substitute with similar part)
  7. 1x TN2106N3 Logic-level NMOS (May substitute with similar part)
  8. 3x 2 pin 5.00mm pitch screw terminals
  9. 1x SN74ACT241N Octal Buffer (3.3v to 5v level shifter, mosfet driver)
  10. 1x CD74HC4017E Decade Counter (as I/O expander)
  11. 1x MCP6281 Rail-to-Rail Input/Output Op-Amp (as voltage follower, may substitute with similar part)
  12. 2x 1kΩ Resistors (preferrably 1% 0.6W metal film)
  13. 1x 100Ω Resistor (preferrably 1% 0.6W metal film)

Case Components

  • acrylic - 3mm acrylic sheet
  • top and bottom - 3D printed, any colour
  • 4x M3 screws & nuts, at least 50mm long (case should be easily disassembled)

Firmware is written in CircuitPython.