blitzypad

My starter hackpad project for Blueprint! Has four keys in a grid, an extra key, a rotary encoder, and a 128x32 OLED screen.

I don't have a screenshot of my overall project because it doesn't exist physically yet.

I plan to use this for all sorts of things! General use, sure. Probably also music production with that cool rotary encoder (time scrub / volume control). Or maybe even something like gaming or video editing! That's the beauty of circuitpython. It's really easy and you don't have to reflash every time. I may even try to have some dynamic things on the OLED screen down the line... After all, rp2040 can act as an arbitrary usb device! I've done some projects with those as a part of picoducky ysws. This is really cool because we've got some additional hardware IO (namely the keys, rotary encoder, leds, and screen.)

Case

made in Fusion 360

I have access to a laser cutter + 3d printer, so I won't need these to be shipped.

Schematic

made in Kicad

PCB:

I had some fun with the graphics, haha

clean PCB without silkscreen:

Schematic:

(sorry it's a bit messy)

Footprints:

BOM:

• 5 Cherry MX Switches
• 5 Keycaps
• 2 SK6812MINI-E LEDs
• 1 0.91" SSD1306 128x32 I2C OLED Display
• 1 Alps rotary encoder, EC12E with switch, vertical shaft.
• 1 XIAO RP2040
• 1 Case
• 4 bolts to hold the case together, I guess?
• 1 male-male USB-C data cable (to plug the xiao in)