not yet… have to test with a graphical MQTT wifi client for the same sensor data 
how low can we go - first test, I removed the green power led and used this library gives <7 uA power consumption in deepsleep (@3v3)
I see the new WIO Terminal battery is here … 
Nice project! What are the references of the screen? Thank you!
Hi,
it’s a "2.42. SSD1306 128 x 64 @3v3
unfortunately, it seems that they are no longer produced, I have send some emails to find out exactly 
bought some a few years ago, also in blue
yesterday I received another CO2 sensor, MH-Z19B
The idea is to meassure CO2 levels (school/offices) and trigger alert when they need fresh air.
finally, I want to build network LoRaWAN CO2 sensors and a handheld tool like in this project
Thank you for the details. OLED 128x64 are pretty common today, alas with small sizes, ca. 0.96 or 1.27 diagonal.
SeeedStudio, maybe an idea for a new product!
or make it a scrolling matrix sign
Phone Tripod Mount as a WIO terminal holder (fits but without the battery unit)
I’m making an adapter plug for this, So I can use it as a ‘handsfree’ desktop unit.
