Lup Yuen Lee 李立源 @lupyuen@qoto.org

UART Port on IKEA Air Quality Sensor runs on 5V, not 3.3V 🤔

https://lupyuen.github.io/articles/ikea?6#notes

Decoding the PM 2.5 Sensor Data transmitted by IKEA Air Quality Sensor

https://lupyuen.github.io/articles/ikea?5#nuttx-app

Here's how we connect IKEA Air Quality Sensor to #PineDio Stack BL604 @PINE64

https://lupyuen.github.io/articles/ikea?4#connect-to-pinedio-stack-bl604

Exposing the UART Port on IKEA Air Quality Sensor ... With a little soldering

https://lupyuen.github.io/articles/ikea?3#solder-uart-port

What's inside the IKEA Air Quality Sensor

https://lupyuen.github.io/articles/ikea?2#about-ikea-air-quality-sensor

Connecting IKEA VINDRIKTNING Air Quality Sensor to Apache #NuttX OS ... All shall be explained in this article

https://lupyuen.github.io/articles/ikea?1

Our #NuttX App is ready to transmit the PM 2.5 readings .. From IKEA Air Quality Sensor to The Things Network over LoRaWAN! 🎉

https://github.com/lupyuen/ikea_air_quality_sensor#output-log

PM 2.5 readings from IKEA Air Quality Sensor ... Decoded OK by our #NuttX App! 🎉

https://github.com/lupyuen/ikea_air_quality_sensor#output-log

Here's how our #NuttX App extracts the PM 2.5 reading from IKEA Air Quality Sensor

https://github.com/lupyuen/ikea_air_quality_sensor/blob/main/ikea_air_quality_sensor_main.c#L104-L114

Our #NuttX App validates the Sensor Data received from IKEA Air Quality Sensor ... By matching the header and verifying the checksum

https://github.com/lupyuen/ikea_air_quality_sensor/blob/main/ikea_air_quality_sensor_main.c#L79-L102

Here's how our #NuttX App handles Sensor Data from IKEA Air Quality Sensor

https://github.com/lupyuen/ikea_air_quality_sensor/blob/main/ikea_air_quality_sensor_main.c#L46-L77

ESPHome has a module that parses the data from IKEA Air Quality Sensor ... Let's port it to Apache #NuttX OS

https://github.com/esphome/esphome/blob/dev/esphome/components/pm1006/pm1006.cpp#L57-L96

#NuttX OS shows Sensor Data received from IKEA Air Quality Sensor ... With PM 2.5 encoded inside!

https://github.com/lupyuen/ikea-air-quality-sensor#test-with-apache-nuttx-os

#NuttX OS dumps the Sensor Data from IKEA Air Quality Sensor ... Yep looks correct! 🎉

https://github.com/lupyuen/ikea-air-quality-sensor#test-with-apache-nuttx-os

#NuttX OS has a GPS Demo App that reads from UART ... Let's tweak it to dump the UART Data from IKEA Air Quality Sensor

https://github.com/lupyuen/incubator-nuttx-apps/blob/master/examples/gps/gps_main.c

Apache #NuttX OS shows the UART Data from IKEA Air Quality Sensor! Let's dump the data in hex

https://github.com/lupyuen/ikea-air-quality-sensor#test-with-apache-nuttx-os

Testing IKEA Air Quality Sensor gets messy ... 2 USB Ports needed! 🙄

https://github.com/lupyuen/ikea-air-quality-sensor#connect-to-pinedio-stack-bl604

Configure Apache #NuttX OS to enable UART1 for 9600 bps ... So NuttX can talk to IKEA Air Quality Sensor

https://github.com/lupyuen/ikea-air-quality-sensor#configure-apache-nuttx-os

Now we connect IKEA Air Quality Sensor to #PineDio Stack #BL604 @PINE64 ... So we can transmit PM 2.5 readings over LoRaWAN to The Things Network!

https://github.com/lupyuen/ikea-air-quality-sensor#connect-to-pinedio-stack-bl604

Here's how we decode the UART Output from IKEA Air Quality Sensor ... Based on the PM1006 LED Particle Sensor Datasheet

https://github.com/lupyuen/ikea-air-quality-sensor#decode-sensor-data