Pixie Classic (2020)

Easy Micro-LED Displays - WEBSITE

I designed Pixie PCBs as a way to quickly address 5x7 micro-LED displays using an ATTiny45 and I2C driver chip.

Part Highlights

IS37FL3130

I²C LED driver
Capable of driving a 16x8 matrix
Instead used to drive two 5x7 matrices

ATTINY45

16 MHz, single core
Controls the IS37FL3130 driver
Passes clocked data in and out to other displays in the chain with high-speed ASM code

LTP-305G (x2)

5x7 Micro-LED display

Pile of Pixies

Pixie CLassic PCB

Do You Like Datasheets?

(I do, I wrote one.)

Below is the full datasheet I designed and wrote for Pixie displays which thoroughly explains both the hardware and firmware, including how the internal data buffer is laid out and how Pixies communicate.