Our great sponsors
-
-
InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Hey guys! I'm building my first keyboard and trying to get experience before spending a lot on a nice one. I'm 3D printing the "pcb" (can it even be called that?) and hand-wiring everything. I'll either end up using the MK32 firmware or KMK on an ESP32. Anyway, I was looking at backlight options and found most controllers that can control individual LEDs in large numbers (like the IS31FL3731) are fairly expensive and can be hard to find. Now they might not have as many features, but what about chips like the MY9221 (this uses two) or MAX7219? They cost the same as a few switches and consume very little power. The MAX7219 seems perfect for a budget build and is well-supported, but before I go learn how to make my own custom driver and spend a lot of time, is there a reason these chips are not used?
Hey guys! I'm building my first keyboard and trying to get experience before spending a lot on a nice one. I'm 3D printing the "pcb" (can it even be called that?) and hand-wiring everything. I'll either end up using the MK32 firmware or KMK on an ESP32. Anyway, I was looking at backlight options and found most controllers that can control individual LEDs in large numbers (like the IS31FL3731) are fairly expensive and can be hard to find. Now they might not have as many features, but what about chips like the MY9221 (this uses two) or MAX7219? They cost the same as a few switches and consume very little power. The MAX7219 seems perfect for a budget build and is well-supported, but before I go learn how to make my own custom driver and spend a lot of time, is there a reason these chips are not used?