What is it?

It is a compact wireless micro weather station with a 1.54 Inch e-paper display with screen resolution of 200x200 pixels(GDEH0154D67), the highest resolution(number of pixels per 1 inch), the best contrast(black is black). The device has an industrial look, at least I wanted to achieve this, very, very thin. The sensor has very good energy efficiency. Powered by nRF52 multi-protocol chip (BLE, Zigbee, Thread, ESB).

-- GitHub --

-- Buy on tindie.com --

-- Buy on ebay.com --

You can see how it works in my small video.

• RF module MINEW MS50SFA supplied in several modifications with nRF52832 chips or RF module EBYTE E73-2G4M08S1C with nRF52840 chip.

• Arduino development environment compatible.

• The project uses e-paper display (GDEH0154D67) from Dalian Good Display Co.ltd.

• Very long runtime with one or two CR2450 battery.

• Consumption in data transmission mode - 8mA, in sleep mode 4.7μA.

• The ability to install different sensors (si7020, si7021, sht20, sht21, htu20d, htu21d or bme280(sold with this sensor))

Not a bad device to start learning nRF52 and e-paper

My other similar projects:

Mini weather station with e-ink 2.9 Inch

Mini Temp&Hum sensor with E-Ink 1.02

...I hope this development will deserve your like