Page 57 - The Basics IA by ETron Circuit Labs

Here’s What You’ll Need...R3R2 R1RESISTORhole 7jhole 17j220 Ohm - (Red, Red, Brown, Gold)hole 18bhole 27d1K $ (Brown, Black, Red, Gold) hole 18aCAPACITORS C1 10uFhole 19g hole 18hhole 12f hole 12dC2 103 Anode0.01uF a b c d e 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 a b c d e f g h i j 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 f g h i j IC 1B1holes 19f - 16fWIRESW1 = 7b & 30b W2 = 19a & 30c W3 = 19h & 30h W4 = 12j & 30j W5 = 16g & 19d W6 = 17d & 18g W7 = 16d & 12c PROBE WIRES:Probe #1 in hole 27c Probe #2 in hole 17aLIGHT EMITTING DIODE (LED)INTEGRATED CIRCUIThole 19b6.8K & (Blue, Gray, Red, Gold) CathodeLED 1Cathode (flat side)hole 7e hole 7f8 7 6 5 holes19e-16e1234REDBLACKSCAN HERE TO SEE MORE ONLINEred = hole 30e black = hole 30g55tell the approximate amount of moisture by observing the blinking LED.Procedure:Assemble the circuit and connect a 9-volt battery to the Battery Snap and observe that the LED may or may not be on. If you touch the probe wires together or put them into water, the LED will blink. The more moisture the faster the blinking. Remember, when you are testing plant soil for moisture, the higher the moisture level, the faster the LED will blink.Check Your Work HereAnodeVisit us online at www.ETronCircuit.com for more exciting projectsLAB 28Lab Observations