Hi Audioguru,
I tested both circuits successfully. The first one toggles the flashing circuit with a 0V signal from the remote circuit, the second one toggles the flashing circuit with a 3V signal from the remote circuit.
I will have to check if the second circuit is causing an inversion as you point out. I think I confirmed the 5V output, but I didn't record my findings so I will repeat tonight and report the results.
If the transistor based is pulled down to ground through the 10kΩ resistor, isn't the transistor "open", i.e., not conducting if no signal is being fed from the remote circuit? Shouldn't the output, based strictly on the original circuit I posted at the very top of the same attachment, remain 0V? Again, I'll test and report my findings.
I'm currently rewiring the rat's nest of beardboards to a single breadboard to eliminate the clutter, verify the circuit diagram matches the circuit and ultimately try powering the entire circuit, sans the remote circuit, with 12VDC to see if I really need the 5V regulator. I also need to see if I need to change something in order to use the CD4093 in place of the CD4050 for the up and down 555 counters.
Thanks!
I tested both circuits successfully. The first one toggles the flashing circuit with a 0V signal from the remote circuit, the second one toggles the flashing circuit with a 3V signal from the remote circuit.
I will have to check if the second circuit is causing an inversion as you point out. I think I confirmed the 5V output, but I didn't record my findings so I will repeat tonight and report the results.
If the transistor based is pulled down to ground through the 10kΩ resistor, isn't the transistor "open", i.e., not conducting if no signal is being fed from the remote circuit? Shouldn't the output, based strictly on the original circuit I posted at the very top of the same attachment, remain 0V? Again, I'll test and report my findings.
I'm currently rewiring the rat's nest of beardboards to a single breadboard to eliminate the clutter, verify the circuit diagram matches the circuit and ultimately try powering the entire circuit, sans the remote circuit, with 12VDC to see if I really need the 5V regulator. I also need to see if I need to change something in order to use the CD4093 in place of the CD4050 for the up and down 555 counters.
Thanks!