Using Multiple Displays in CircuitPython #CircuitPython @todbot

Did you know you can run multiple displays in CircuitPython? One way: wire up two displays in parallel. There’s also true dual displays.

Almost all CircuitPython boards support a display. CircuitPython makes it really easy to configure a display’s driver and all displays act the same for drawing images and text: monochrome OLEDs, RGB TFT LCDs, even ePaper!

But only a single display is supported for the pre-built versions of CircuitPython (The one exception is the MonsterMask) Multiple displays are supported in the design of CircuitPython, but it’s a compile-time setting. This is for RAM savings reasons. That decision is a few years old and I think for modern chips like ESP32-S2/3 and RP2040, there’s more than enough RAM to allow that default to go up to two.

Read more about how it’s done in the blog post here.


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