This library is to use the TCA6408A I2C 8 bit IO expander. This device supports a voltage range of 1.65 .. 5.5 Volt. It allows bidirectional voltage-level translation and gpio expansion between 1.8-V, ...
Bluetooth Low Energy (BLE) radio chips are ubiquitous from Raspberry Pi to lightbulbs. BLE is an elaborate technology with a comprehensive specification, but the basics are quite accessible. A ...
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