Pot plant water tester
This simple device checks if their is water in a pot plant. You stick the two probes(paperclips)into the pot plant and if the LED lights, it means there is water in the pot plant.
You need to adjust the 47k potentiometer to set the level at which the LED goes on.
Submitted by:
Betty Bone
boneb@mweb.co.za
Title: Pot plant water tester
electronic circuit
Source: www.electronic-circuits-diagrams.com
Published on: 2005-02-01
Reads: 851
Print version: 
Other electronic circuits and schematics from Miscellaneous
-
Ultrasonic Pest Repeller
-
Time Delay Relay II
-
One-IC two-tones Siren
-
Cuckoo sound Generator
-
Digital Step-Km Counter
-
Flyback Transformer Driver
-
Simple Lie Detector
-
Economical Pump Controller
-
SmartCard PC Emulator
-
Programmable Digital Code Lock