My new arduino project wireless weather mini station with electronic ink display 2.9 inches (GDEH029A1), very low power consumption,compact size, housing with magnets. The device can use si7020 / 21, sht20 / 21, HTU20/21D or BME280 sensors. Use the MINEW MS50SFA RF module with nRF5210, nRF52811, nRF52832 chips, or the EBYTE E73 module with nRF52840 and nRF52833 chips. Soon to be available on openhardware.io
Video: DIY Mini Weather station with an electronic ink display 2.9 Inch ( GDEH029A1 )
My new mini multi device on nRF52810, nRF52811, nRF52832 chips. Designed specifically for a very small case from Aliexpress. It works!!!
bme280, sht20/21, si7020/si7021, hdc1080, max40009, lis2dw12, lis2dh12, lmt01, reed switch, led + rgb led, user button and 6 analog pins, 6 digital pins with NFC.
VIDEO:
Mini multi-sensor in a small case. New Happy node mode test. nRF52 – 03:29
— Andrew EfektaSB
Wireless expansion module for very cheap soil moisture sensor from Aliexpress 
MySensors | Wireless Module for Capacitive Soil Moisture Sensor v1.2 – 05:12
— Andrew EfektaSB
An updated version of my temperature and humidity sensor with e-ink. Now on nRF52840. Now it is not a module but a device in the case.
Replaced temperature sensor sht20 -- > > si7020
Added accelerometer.
In the near future the project will be posted updated on the website openhardware.io
Video: https://youtu.be/T66y83lF-xg
Hello everyone. I want to show you my new device, battery powered air quality sensor. The device also has light, temperature, humidity, and atmospheric pressure sensors. I am currently testing the software.
@magpern said in 
EFEKTA Temp&Hum sensor(ver. nRF52832 )+E-Ink display:
Seriously!!!!!!!!!!!!! It cannot be true!!! I have just ordered PCBs and all needed stuff to assemble it, and now the code is gone!!! Please post the code again, or make it available on alternative sites.. please. It is hundreds of dollars to waste otherwise!
The project will remain open, like others. I was in a bad mood that day:)... The rules of the site administration are reasonable, and the decision to open the project was mine.
Code for Arduino IDE - https://drive.google.com/file/d/13wmxCt9XehJr1E2eyG1RnYsQTMb9A2LR/view?usp=sharing
My new project is finished today and put to the tests. This is a continuation of my other project - Wireless Module for Capacitive Soil Moisture Sensor v1.2.
video: https://youtu.be/2HM0y-D7QNo
Today I finished printing the case. Turned out to node with sensor bme280 and e-ink display, running on nRF52840 from SKYLAB
In one of the photos still have the sensor with bme280 working on nrf52840 from EBYTE. ...This is the previous project.
upd.
@NeverDie sgp40 sensor is used, I also test the bme680, but the results are worse there.
Hello everyone. I want to show you my new device, battery powered air quality sensor. The device also has light, temperature, humidity, and atmospheric pressure sensors. I am currently testing the software.
@ncollins
Very, very beautiful project! I also already have several such radio modules from different manufacturers. Here are just these ebyte specifically, they are without dc-dc. ...I plan to transfer support from nordic sdk to sandeep mistry (just like I did with 52810 and 52811), but how do you flash them under mysensors? Maybe there is already some shorter way?
@BearWithBeard said in What did you build today (Pictures) ?:
VEML6030
Take a closer look at the max44009 light sensor and the lis2dw12 accelerometer. You can save a few microamps.
Hi guys. I recently made a plant watering control sensor with an electronic paper display. Today I did my first tests, ..everything went well
Added an extended version. +MAX44009 light sensor, AAA batteries
@NeverDie Sorry, I didn't know there were rules like that now :), then it would just be a temperature, humidity and pressure gauge with weather forecasting, okay?
And another of my completed projects is a mini weather station running on nRF52832 and nRF52840, you can install bme280 or si7021, htu21d. Powered by a single cr2450 battery. As always soon to be on openhardware.io
Video: https://youtu.be/HNjYtKyh8zo
