Bi-color 8x8 Matrix

A project log for D1 Mini Matrix Deluxe Shields

Shields for the D1 Mini ESP8266 board using the ISSI chips

deʃhipudeʃhipu 04/28/2017 at 22:480 Comments

After the IS31FL3728 chip, I tried its larger cousins, but I'm still struggling getting them to work. They are in 40- and 48-pin QFN packages, which are pretty hard to solder by hand (in fact, it might be impossible without a hot air gun and/or a reflow oven). But one of them, the IS31FL3733 also comes in a TQFP package, and I got one. This one is too big to fit on a D1 Mini shield, but I made something else:

(Note that the colors are smooth and perfectly fine in reality, but my phone camera can't handle them.)

This project will have a page of its own soon, but for now it's a good testing platform for my code. So I made another MicroPython library, available at that can handle both IS31FL3733 (for up to 12x16 matrices) and IS31FL3736 (up to 8x12 matrices).

In the mean time, I'm going to work on those QFN chips, maybe I will manage to get them to work somehow. Maybe it's just time for me to invest in a proper rework station?