PIR Motion Sensor Light 4 LED (Modified Delay Timer)
Posted: Tue 13 Mar 2018 1:34 pm
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Tx is LED On timer. Factory default is 6.6 second. Tx = 24,576 x R20 (Ω) x C7 (F) = 24,576 x 15,000 x 18 nF x 10-9 = 6.6 second
Ti is inhibit movement after LED Off timer. Factory default is 4.8 second. Ti = 24 x R8 (Ω) x C8 (F) = 24 x 2,000,000 x 100 nF x 10-9 = 4.8 secondModified
Tx = 24,576 x R20 (Ω) x C7 (F) = 24,576 x 475,000 x 18 nF x 10-9 = 210 secondNext modified R8 to 2M + 100K in parallel.
Ti = 24 x R8 (Ω) x C8 (F) = 27 x 95,238 x 100 nF x 10-9 = 0.25 second