An advanced CO2 Monitor/Meter firmware for ESP32 with Android and iOS App for real time visualization and charting of air data, data logger, a variety of communication options (BLE, WIFI, MQTT, ESP-Now) and many supported sensors.
Home Page: https://emariete.com/medidor-co2-gadget/
License: GNU General Public License v3.0
When I navigate the menu and click twice a bit fast on the bottom button, a notification windows appears with text "Test functionality double click" and doesn't disappear.
This is likely left over code from some test, but it interferes with menu navigation.
Would be great also if in an instable wifi environment, the gadget would try the reconnect to the AP in case the link is lost (including the MQTT broker). At this moment both are going to off.
Hey I am not super amazing with git, but my fork is focused on making sps30 work...
https://github.com/disruptivepatternmaterial/CO2-PMX-T-RH-Device
if you have a i2c sps30 connected it will report in the PM's and send it all to MQTT.
I have also updated the display to show some pm info
But...it is really janky, so not ready for a PR, but hope to have it soon, if anyone wants to take a look.
Is your feature request related to a problem? Please describe.
Please add support for esp32-c3 cpu.
Describe the solution you'd like
To be able to compile for the esp32-c3
Describe alternatives you've considered
I have tried to modify the code, but the code, and libs that are used, assume that all esp32 cpus have serial2, which the esp32-c3 doesn't.
Even though I am able to compile the code, I can't get it running. Don't know what is wrong.
Based on Adafruit Library to save on memory (FastLED needs more memory).
To start with it will support 10 LEDs (pixels), all with the same color. Color will be same as display with same definitions for Green, Yellow and Red. In the future I can add independent options if there is a need.
It will be great if SenseAir Sunrise CO2 sensor will be available to the project
Thanks in advance
Feature similar to relays outputs to send alarms via MQTT at each color level (CO2 concentration)
When installed it is not always easy to reach the panel or USB interface to change the configuration.
Is it possible to implement SSH to be able to configure over the WiFi connection?
Adds sowing notifications (information, warnings and errors) to the user on the device display (if any).
Starting development...
Please create a new #define that sets 3 things depending on being commented or in effect:
1-Screen orientation (1 or 3)
2-pin number for Forward/Enter button
3-pin number for Back button
Thats it. I do this in all my projects. Standard accommodation for those wanting to have power on the other side from that coded. Keeps the top button doing the same function in either orientation.
Thanks. I hope I will be able to successfully run this, soon with my MHZ sensor.
Mike Morrow
Add LoRa protocol to connect sensors over long distances and send data if no wifi network is available.
I can clearly see the setting changing the led from red to green and vice versa but saving the settings and reboot puts the led back to red when it should be green. After checking the settings again after the reboot they are correctly saved. (I have the rgb version). If I toggle them again, it gets the correct color again.
Using: Version: 0.5.049-feature-neopixel Flavour: ESP32 OLED
If a SSID is entered in WiFi configuration menu as "123 567" it's truncated to "123"
Show in a list available SSID and select one to connect.
For example "topic" was used as "topic " (30 characters long).
HI,
I have build a CO2 sensor using the CO2 Gadget from mariete. It works fine in its standalone configuration. Now I would like to activate the wifi. unfortunately, it seems that the length of the password is limited to 28 characters whereas my wifi password uses 37 cars. Do you confirm this limit ? If yes is it possible to increase this length ?
Regards
Seems not to connect
Initializing MQTT to broker IP: 192.168.100.36
-->[MQTT] Attempting MQTT connection... not possible to connect to 192.168.100.36 Connection status: 5. (22 of 12 retries)
-->[MQTT] Max retries to connect to MQTT broker reached, disabling MQTT...
Add functionality to show measurements in e-Ink display.
CO2 Gadget displays a very basic (for now) web page with the latest CO2 readings at "https://your-co2-gadget-ip-address"
If works fine if BLE is not active but if BLE is active you get a "connection rejected" error.
If activeBLE = false or initBLE() is commented out this doesn't happens.
In some cases, we do not have a temperature / humidity sensor or we do not want to see these values on the screen. It would be nice to be able to hide this information.
Requested by user at Telegram Group: https://t.me/emariete_chat/31774
During battery operation, if user has selected display automatic turn off after X seconds it could be neccesary turn on display if measures rise to high values.
I think it could be turn on when measures increase or decrease 50 or 100 ppm from last value displayed, and turn it off again after X seconds.
When measures are at upper high risk limit, it could be neccesary to show values at least once time every 10 minutes, although don't change values.
Security must be more than battery optimization.
Looks like there is an issue with the last version of the TFT_eSPI library #Bodmer/TFT_eSPI#1499
I have modified platformio.ini to use my fork with 2.3.70 and looks to be working fine.
As the outputs double as relay and regular RGB LED there is an related effect:
The orange output is not turned off when red goes on (to keep ventilation or air cleaning equipment working when CO2 rises).
This means when a RGB LED is connected when the LED lights red, yellow will be still on so there is not a "only red" light.
To fix it when working with LED I’ll include a new option in menu to select if these outputs should work in «relay mode» (keeping orange on when red goes on) or «LED mode» (turning orange off when red goes on).
I have an 18650 connected to the battery connector of the TTGO T-Display and configured the battery to be full at 4.1 volt and empty at 3.0 volt in the menu on the device.
In other words, the indicator seems to have it's own life, separate from the voltage readout :)
Suggestion:
Add possibility to modify settings via web page.
This feature implements GPIO outputs to follow CO2 Ranges (orange and red) to, for example, turn ON and OFF ventilation systems depending on CO2 levels.
I want to make a Co2 meter using sensirion scd30 + lilygo ttgo t-display for a greenhouse.
I want the device to control an electromagnetic gas valve that opens at 1000ppm and closes at 1500ppm.
If there is a solution I would like to thank you very much.
As conversation started at the Telegram group (https://t.me/emariete_chat/31250):
Under some circumstances (not always), if MQTT functionality is enabled and there are issues connecting to the MQTT broker the action of trying to connect to the broker unsuccessfully blocks execution for some seconds, making CO2 Gadget unresponsive (menu not working as CO2 Gadget is working heavily to reconnect to the MQTT broker).
Would you consider adding support for ESP32-S3 of in particular the T-Display-S3, to be able to install this software on this new Liligo device with the much bigger screen?
First at all, hide passwords in menu.
If you want to change any password you must to type it again completely.
Maybe is possible to store passwords with MD5 encrypt / decrypt code?
Requested by user José Luis at Telegram group.
ESP-NOW is already working in my "Ultra Low Power Consumption CO2 Meter" and in the "ESP-NOW to MQTT Gateway" (both still unpublished) so must adapt and include source code.
Hello. Please output the СO2 signals to separate pins for green, orange and red.
Include full support for the most common I2C OLED Displays
First of all thank for your work on this. I love the project!
I'm not sure if this should be a feature request or if this should already work. I've built the CO2 gadget and really love it. I'm using it with a MH-Z19B sensor together with an 18650 in a case I found somewhere and it works fantastic.
I would like to add a BME280 sensor for temp/humidity/air pressure measurement, but haven't been able to get it working yet. From the documentation it wasn't clear to me if this should be possible with the precompiled firmware, so I just tried.
I've connected it to the i2c bus at pins 21/22 and to the 3.3v output of the T-Display, but it doesn't seem to get detected when checking the console output. (also tried swapping 21 and 22 as I wasn't sure which one was SDA and SCL)
Can you enlighten me on how to proceed?
Is your feature request related to a problem? Please describe.
No
Describe the solution you'd like
Menu option to change Temperature from C to F for all of us that didn't convert to Metric!
Describe alternatives you've considered
I made in the CO2_Gadget_Sensors.h file still apply? If not, how do I made the changes (changing C for F) {C * 1.8+32}😀
but it didn't get uploaded.
Additional context
Thanks for all your hard work and time you have spent working on this project.
There are some memory issues (that's why this issue is also labeled as bug) when all options are enabled (WiFi, MQTT, BLE). We have reached the limits of memory.
Bluetooth library is tacking too much memory.
One possibility is to swap actual bluetooth library with NimBLE (a similar less memory angry library).
Right now, it forces to have to choose functionalities.
Memory use with WiFi, MQTT and Bluetooth:
RAM: [== ] 21.6% (used 70616 bytes from 327680 bytes)
Flash: [========= ] 94.4% (used 1856360 bytes from 1966080 bytes)
Memory use with WiFi, MQTT (without Bluetooth):
RAM: [== ] 16.1% (used 52632 bytes from 327680 bytes)
Flash: [====== ] 61.9% (used 1217832 bytes from 1966080 bytes)
Two options::
It could be a mix of two options.
If only increment nextTimeToDisplayOff , in 49,7 days variable overflow.
Involve to CO2_Gadget_Buttons.h and CO2_Gadget.ino function displayLoop()
Here there are a solution:
https://hetpro-store.com/TUTORIALES/arduino-millis/
Describe the bug
When I want to configure a longer mqtt topic name than previously configured, I cannot add the additional characters. So if my topic was co2 I cannot change it to co2-sensor for example.
To Reproduce
Steps to reproduce the behavior:
- character.Expected behavior
It should be possible to add characters after the last character of the previous setting.
Additional context
Looking at the code, the problem might be related with truncating the tempstring before copying it to the used value here: https://github.com/melkati/CO2-Gadget/blob/master/CO2_Gadget_Menu.h#L383
Note that this pattern is used for most settings.
Add Over The Air functionality so it's possible to update firmware from CO2 Gadget internal web page without physical access need.
Works fine when connecting to broker test.mosquitto.org:1883 but fails on connection to broker mqtt.anaire.org:80
Work in progress in branch https://github.com/melkati/CO2-Gadget/tree/anaire-cloud
Once it's working I have to refactor it to make it non-blocking as now it blocks the menu from working while doing his stuff.
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