Waveshare 1.9inch Segment E-Paper Module 2p and rotate the bracket knob

and rotate the bracket knob to adjust the object distance

Wio-E5 mini v1

It uses Doppler radar technology

Analog Input

you can use this kit to save your filaments

Waveshare 1.9inch Segment E-Paper Module 2p and rotate the bracket knob1. 9 Segment E Paper Module Support Partial Refresh, Low Power, Wide Viewing Angle, Paper Like Displaying Without Electricity 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.