Mechanical...Calculator!
Hardware
By
@ItsTann
- 2 Devlogs
- 1 Total hours
Standalone desk calculator that fits right into any aesthetic and boasts functionality. Perfect for everyone!
@ItsTann
on
Mechanical...Calculator!
31m 25s logged
Today I continued working on the PCB for my Mechanical Calculator project.
After finishing yesterday’s schematics I assigned the footprints to each component of my build.
NOTE: I plan to hand-wire the battery to the microcontroller later when I have the materials ready.
I designed my PCB to be 86mm x 126mm using KiCad. This design features 17 keys (10 number keys and 7 operation keys) . I also used KiCad’s 3D viewer feature to visualize my PCB.
@ItsTann
on
Mechanical...Calculator!
16m logged
Designing the PCB.
I’m creating a schematic for the pcb based on a common calculator layout.
This includes:
- Designing the key matrix (to reduce the amount of pins needed on the microcontroller).
- Creating labels and connecting it to the microcontroller.
I’m using the Arduino Pro Micro as my microcontroller, a 7 segment 8 digit display (MAX7219), and using mechanical keyboard switches.
I haven’t assigned any footprints yet.
