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SparkFun will be closed May 25, 2015 for Memorial Day. Orders placed after 2pm on Friday the 22nd will ship out on Tuesday. Thanks!

Auto Water Circulation Pump

by UNTEngineer

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Normally a hot water circulation pump requires a switch to activate the pump, but instead this project will allow the pump to activate via motion when a person approaches the water faucet.

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Product Subtotal Qty
RF Link Transmitter - 434MHz
In stock WRL-10534
3.95 1   
Polymer Lithium Ion Battery - 2000mAh
In stock PRT-08483
25.9 2   
NCP1400-5V Step-Up Breakout
Retired PRT-08999
11.9 2   
Cannot be ordered at this time.
RF Link Receiver - 4800bps (434MHz)
In stock WRL-10532
4.95 1   
ePIR
Retired SEN-09587
23.9 2   
Cannot be ordered at this time.
ATMEGA8U2 Breakout
Retired DEV-10277
39.9 2   
Cannot be ordered at this time.
SparkFun Opto-isolator Breakout
In stock BOB-09118
9.9 2   
Solid State Relay - 8A
In stock COM-10636
9.9 2   
Total: 130.3