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Electronically curious
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Posts posted by Electronically curious
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Okay, I had check the condenser mic and it's not drawing any current since the Zener diode voltage remained the same if I take out the mic and put it back. But I do notice that if I took out the RTS0072 chip. The voltage increased a bit but when I put it back, it decreases.
Unless it's supposed to do that.
I also noticed that if I touched some of the jumper wires, the speaker produces different tones.
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Okay, I had check the condenser mic and it's not drawing any current since the Zener diode voltage remained the same if I take out the mic and put it back. But I do notice that if I took out the RTS0072 chip. The voltage increased a bit but when I put it back, it decreases.
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Thank you all for the assistances. Yep, I had fixed the problem with the Zener diode and now the voltages at the pin 11 &12 are now 3.793 v but the device still doesn't function as intended.
Is the voltage still too low?
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Okay thank you. I got back and I measured them.
Speaker: 6.136V
Pin 6 of LM386: 6.169V
Mic: 1.585V
Pin 11 & 12 of the RTS0072: 1.693V
Pin 1, 2, 8, and 9 of the RTS0072: 0.797V
Ground connections: Around 0.000V
I can see that there's something wrong around the yellow area but I'm not sure why. Are you able to assist me with it?
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A photo of the schematic and my prototype.
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Hi there, thank you for replying. I had switched the polarity of the MIC and they still don't work either way. I also had adjusted the potentiometers to a low setting unless I connect it wrong. I took a photo of my prototype and hopefully you could see it well and also my BOM.Bill of Material (BOM).pdf
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Hi there, thank you for replying and willing to assist me. I will provide the schematic of the circuit and a closeup photo of my prototype as soon as I get back. I will also upload the list of components I used to prototype the device. The circuit is based on a voice changer project which can be found in this link: Voice Changer - Electronics-Lab.com
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I'm currently prototyping the device using the breadboard and I replaced the AP8072 IC with RTS0072. While testing it, the speaker only produces nosie and when trying to speak into the microphone, it doesn't work. I rechecked the wiring and the components but they're all in good condition and correct. I currently needed assistance with it and will appreciate it if you could provide some assistance with it. Thank you.
Assistance with the voice changer using AP8072 IC
in Projects Q/A
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Yeah, I tried that and nope. The speaker just produce nosie and the mic doesn't work.