I had this working last night... I so HATE having to ask this question... but since a teardown and putting everything back on the breadboard, I can't get it to work again.
I had a signal coming from the 4th op amp on an LM324 triggering the circuit to oscillate, then float. I should've written down what I had working because I've been tinkering all day and I can't get it back.
I would move an object over the photodiode, it'd trigger the op amp to go high, that was routed to the spot shown in the attachment and everything worked. I've been try'ng to get it put back together how I had it since last night, no luck.
The signal has to go high (was high last night), then float.. if it stays high (+12V) only one half of the LEDs light, if it's low (-12V) only the other half lights, if it's 0V then none of them light.
Any ideas?
I had a signal coming from the 4th op amp on an LM324 triggering the circuit to oscillate, then float. I should've written down what I had working because I've been tinkering all day and I can't get it back.
I would move an object over the photodiode, it'd trigger the op amp to go high, that was routed to the spot shown in the attachment and everything worked. I've been try'ng to get it put back together how I had it since last night, no luck.
The signal has to go high (was high last night), then float.. if it stays high (+12V) only one half of the LEDs light, if it's low (-12V) only the other half lights, if it's 0V then none of them light.
Any ideas?
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