Skip to content

Cassiopeia Ltd

the joy of making stuff

Menu

  • home
  • workshops
  • kids
  • projects
  • 3Dmaps
  • materials
  • about

Month: August 2019

Upgrading dust sensor to laser (PMSA003)

Upgrading dust sensor to laser (PMSA003)

Over the years I’ve built a few dust sensor systems (‘PM2.5’) with SHARP and SHINYEI sensors, but calibration was always a headache as they have analog output. Earlier this year (2019) i looked into the current sensor technology again, and

Tom 19/08/201919/08/2019 projects 3 Comments Read more

Contact

tom@cassiopeia.hk
www.cassiopeia.hk

Creative Commons Licence
All content of this website is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Recent projects

  • Finding real Helium hotspots in Hong Kong (part 2)
  • Dragino LPS8 LoRaWAN gateway overheating fix
  • LoRaWAN river level sensors
  • Next wave of fake Helium hotspots on Lantau island
  • Helium LoRaWAN network – most active hotspots mapped (data packet traffic)
Copyright © 2022 Cassiopeia Ltd. All rights reserved. Theme Spacious by ThemeGrill. Powered by: WordPress.