What is it?

This is a compact wireless soil moisture sensor with a 1.02-inch electronic paper display. The device has an industrial look, at least, I wanted to achieve this. The sensor has very good energy efficiency. Powered by nRF52 multi-protocol chip (BLE, Zigbee, Thread, ESB). The device comes preinstalled with MySensor Protocol (ESB) wireless networking software - www.mysensors.org can also work as a standalone device without a network. Can use both a ready-made device and a device for developing your own software right away.

You can see how it works in my small video.

Why did you make it?

I am interested in making original devices that are not on sale.

Right now, I'm very interested in low-power, cost-effective wireless devices.

What makes it special?

RF module MINEW MS50SFA supplied in several modifications with nRF52810, nRF52811, nRF52832, nRF52840 chips.

Arduino development environment compatible.

The project uses an e-paper display (GDEW0102T4) from Dalian Good Display Co.ltd.

Very long runtime with one CR2450 battery.

Consumption in data transmission mode - 8mA, in sleep mode 4μA.

The case is printed on an FDM 3D printer. After printing, sanding and polishing is applied.