I'm just getting into electronics now, so I have little experience with designing my own circuits, let alone debugging them,
My goal: DIY hardware only (no microcontroller) Clapper.
right now i'm trying to amplify the signal from an electret microphone, and used this schematic as a base LINK.
I'm using an LM324N in an open-loop configuration to achieve maximum gain, and have chained the 4 op-amps to again achieve maximum gain (since the single stage didn't seem to cut it). The last stage has a voltage divider (pot) connected to the negative input of the op-amp in order to control the cut-off voltage (put it there in case I needed it).
Here is a link to the circuit
Link to Falsted circuit simulator (of the circuit)
Notice the white alligator clip? the circuit doesn't work unless I touch that (also my bare feet have to touch the ground).
Why is this happening and how do I fix my circuit?
Further information: I'm using ArduinoScope as a very-poor-man's oscilloscope. I would also appreciate any critique you have on my work.
Thanks!
-Leav
My goal: DIY hardware only (no microcontroller) Clapper.
right now i'm trying to amplify the signal from an electret microphone, and used this schematic as a base LINK.
I'm using an LM324N in an open-loop configuration to achieve maximum gain, and have chained the 4 op-amps to again achieve maximum gain (since the single stage didn't seem to cut it). The last stage has a voltage divider (pot) connected to the negative input of the op-amp in order to control the cut-off voltage (put it there in case I needed it).
Here is a link to the circuit
Link to Falsted circuit simulator (of the circuit)
Notice the white alligator clip? the circuit doesn't work unless I touch that (also my bare feet have to touch the ground).
Why is this happening and how do I fix my circuit?
Further information: I'm using ArduinoScope as a very-poor-man's oscilloscope. I would also appreciate any critique you have on my work.
Thanks!
-Leav