Review on Songhe 4 Channels IIC I2C Logic Level Converter π Bi-Directional Module: Efficient Voltage Shifter for Arduino Green Board (10PCS) by Vincent Hurst
Simple level shifters that just work
I have a Mr. Cool on board with TTL 5V serial communication. One of these level switches combined with an equally cheap Wemos D1 mini (which has a 3.3V serial port and a 5V to 3.3V DC adapter) quickly completed the project, and now I have full control over the air conditioning through my home automation.
- Nice packaging
- Thin
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