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kike-canaries / canairio_firmware

CanAirIO is a citizen science initiative. We are developing a mobile application that is able to set a PM2.5 or CO2 sensors, and other related sensors, as a fixed station using WiFi or mobile station with an smartphone by using a Bluetooth connection.
https://canair.io
GNU General Public License v3.0
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Issue with temperatures below Zero °C #239

Open Marvin-YYC opened 1 year ago

Marvin-YYC commented 1 year ago

Overview

When temperatures drop below -0.9°C the the big readout shows large 5 digit numbers a̷n̷d̷ ̷i̷t̷ ̷s̷t̷o̷p̷s̷ ̷b̷r̷o̷a̷d̷c̷a̷s̷t̷i̷n̷g̷ ̷d̷a̷t̷a̷.
(I tested just the AHT10 sensor in the freezer, the ESP board and battery remained at room temp.) ♦ UPDATE: Nov 21/22 Found that data is still being broadcast to Influx, but dashboard T & H - Fixed Stations (Auto) does not show temperatures below zero °C.

Also: this board is giving false (0.0) PM2.5 sensor data to Grafana/Influx. I do not have a PM2.5 sensor connected I am unable to connect via UART from IKEA PM2.5 sensor to this board, and cannot connect to the IKEA PM2.5 Cubic sensor directly.

Debug output

Not available.

Device config

UART: Auto Sample time: 60 sec Debug: Enabled

board:  TTGO T-Display
firmware version: TTGO_TDISPLAY rev918(prod)
mobile app version: v0.8.4 rev612  - MotoG(5)Plus
sensors: AHT10 (i2c)
OLED: yes
Power: Battery
hpsaturn commented 1 year ago

Please, can you test this issue with the last testing version of CanAirIO. Thanks!

Marvin-YYC commented 1 year ago

Please, can you test this issue with the last testing version of CanAirIO. Thanks!

This issue with temperatures below zero still persists with ver: 918 and testing ver: 943 using only AHT10 temp/humi sensor.