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Stemma QT modules

STEMMA QT is a variant of Adafruit 's Stemma system designed for smaller devices and wearable technology. These use smaller 4-pin JST SH connectors with a pitch of 1.0 mm, specifically for I2C use.
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The 3 most popular Stemma QT modules

STEMMA connectors are technically 3- and 4-pin JST PH connectors. These connectors are Adafruit 's solution to various sensors and devices can be used plug-and-play without much wiring. The idea is that easy-to-connect cables allow you to connect things without soldering, wiring, and complexity.




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