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Replying to @abetusk

The gist is each module has 8 characters, and a 5-pin header on one side / socket on the other. You can control up to 8 of them on an I2C bus by closing some address jumpers on the back. You also supply them with 5V power; each module has its own 3.3V LDO. https://mobile.twitter.com/josecastillo/status/1297651924775374851

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