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Power supply: 5V DC power supply header/connector
HMAC and Digital Signature module
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ST7789 Datasheet
1.9inch Segment E-Paper Module, 91 Segments, I2C Bus, Ideal for Temperature and humidity meter, Humidifier, Digital Meter Classic Power supply: 5V DC powerDescription 1. 9inch Segment E Paper Module, 91 Segments, I2C Bus, Ideal for Temperature and humidity meter, Humidifier, Digital Meter Features No backlight, keeps displaying last content for a long time even when power down Ultra low power consumption, basically power is only required for refreshing I2C interface, for connecting with controller boards like Raspberry Pi Arduino STM32, etc. Onboard MOS voltage translating circuit, compatible with 3. 3V
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