ESP32 CanAirIO Loader

This project will able to upload the latest version of CanAir.IO firmware automatically via a simple Arduino sketch.

General steps

You can run it from your Arduino IDE or from your Android phone using ArduinoDroid app (recommended) with a simple OTG cable connected to your board. (see the video below)

• Install Arduino IDE or Arduino Droid app
• Install the Arduino Json Library v6.x from ther Library Manager
• Configure your board: ESP32 Dev Module or similar board
• Select partion schema to minimal (OTA with 1.9Mb to app 190kbs to SPIFFS)
• Configure your WiFi credentials in the sketch
• Choose the firmware flavor in the sketch (board version name)
• Build and upload, wait for, the last version of CanAirIO will be installed
• (optional) see the progress on Serial console or monitor.
• Android app guide for using the device like a mobile or fixed air quality station

Video step by step (Arduino Droid alternative)

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Troubleshooting

Not happen anything after upload

Please view the output messages in the serial monitor, maybe you have internet connection issues, for that:

• Wait for complete upload firmware (i.e 100%)
• Enter to serial monitor (button on top right)
• Press and hold the reset button
• The serial output in Arduino Droid app for example is similar like this:

• The output in Arduino IDE monitor is the same.

When I try to compile have errors

For example if you have the next error:

loader (1).ino:53:5: error: redefinition of 'int_payloadVersion'

maybe you have two or more files open in the IDE, please review the opened tabs:

Not enough space to begin OTA

If you have this error message in the output, please check the right selection of partition on your IDE:

Arduino Droid only supports 64bits devices

When you have a error message like this:

you need change or use another Android device more updated (64bit version)

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We have a Telegram group for support, maybe the community can help you. (Spanish/English)