Navigation

    • Register
    • Login
    • OpenHardware.io
    • Categories
    • Recent
    • Tags
    • Popular
    1. Home
    2. Tags
    3. calibration
    Log in to post

    • OldSurferDude

      Soil Moisture Sensor Powered by solar charged battery
      My Project • battery home assistant low power eeprom solar calibration • • OldSurferDude  

      5
      1
      Votes
      5
      Posts
      33
      Views

      CrankyCoder

      @OldSurferDude I use this. https://www.homedepot.com/p/Orbit-Solenoid-for-Battery-Operated-Timer-57861/203151515 Instead of having to hold the valve open, i can just pulse it. I use a simple motor controller to pulse it and when i need to close it, pulse it in "reverse". That way I could use a battery and if it only opens once or twice a day it's only a half a second or so of draw off the battery.
    • epierre

      Air Quality Sensor
      Hardware • air quality gas sensor calibration aqi hcho • • epierre  

      270
      0
      Votes
      270
      Posts
      308569
      Views

      rayzyzy

      Hi, Working with tgs2602 , tgs 2620 and tgs2611 . I've read the replies from top to bottom but haven't understood how exactly i take data from the graph in datasheet and use it with power regression .