Auto Water Circulation Pump by UNTEngineer

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 Quantity Subtotal
RF Link Transmitter - 434MHz
In stock WRL-10534
1 3.95
Polymer Lithium Ion Battery - 2000mAh
In stock PRT-08483
2 12.95 ea.
25.9
NCP1400-5V Step-Up Breakout
Retired PRT-08999
2 5.95 ea.
11.9
RF Link Receiver - 4800bps (434MHz)
In stock WRL-10532
1 4.95
ePIR
Retired SEN-09587
2 11.95 ea.
23.9
ATMEGA8U2 Breakout
Retired DEV-10277
2 19.95 ea.
39.9
Opto-isolator Breakout
In stock BOB-09118
2 4.95 ea.
9.9
Solid State Relay - 8A
In stock COM-10636
2 4.95 ea.
9.9
Total: 130.3