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
I think this open source project is finished. This is a small air quality sensor. Quite a useful thing turned out for our not simple time.
https://github.com/smartboxchannel/EFEKTA-EINK213-AIR-QUALITY-SENSOR-NRF52840-V2-ED3
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
@berkseo said in NRF51-52 PA not support ???:
The network is simple, this node is nrf52 with an amplifier and a gateway with the nrf24 radio module with an amplifier. It would be strange if a gateway with an amplifier could not deliver ACK. Two moments, or I did a very bad control of the amplifier on the node nRF52 or in the radio driver itself, something is not working well, and may need some delay settings. If i send messages with an ECHO (soft ack) request, this works fine over very long distances. Hw ack does not work properly.
Someone was able to do this for mysensors? Gateways and repeaters on nrf5 with amplifier is a very, very cool topic.
added support for E-Ink DES to the project. Further test in the refrigerator
@mfalkvidd said in Air quality and weather forecast sensor:
Do you have any special plans for what to do with the award? (It is of course ok if you prefer to not share your plans)
I will further develop this project, I also have many other projects and ideas.
I just got an email. It was unexpected :). This project of an air quality sensor that works on Mysensors became one of the finalists Hackaday Prize Challenge 01: Rethink Displays.
updating the project to v 0.54
