Greg Eaton (@Geato)
I have done this to capture acoustic echoes using a CPLD (Xilinx XC2C32)and a static RAM. The processor I used was the ATMega128 and I was able to tri-state the...
I cut my teeth on an 1802 and SC/MP from Nat Semi. The 1802 dev unit had tape to tape assembly. Funny how cassette tapes are making a come back. From there I migrated...
If I was going to build something like this I would ditch the phototransistor as they are inherently slow due to junction capacitance. Look at using a PIN photodiode...
The sensor should be placed in the drip pan of a hot water tank. That being said, the water will never be where the sensor is located until the leak becomes significant....
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