https://www.photonicsguy.ca/ 2026-04-06T22:47:29+00:00 https://www.photonicsguy.ca/ https://www.photonicsguy.ca/_media/wiki/dokuwiki.svg text/html 2023-12-11T15:47:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.photonicsguy.ca/esphome/vindriktning?rev=1702309669&do=diff Vindriktning Ikea air particulate sensor RX pin on ESP-01S header is pin 5 Serial testing Configure serial port: stty -F /dev/ttyUSB0 speed 9600 cs8 -parenb Value of 250µg/m³: echo -en '\x16\x11\x0b\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x00\x00\xb2' > /dev/ttyUSB0