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I posted some years ago about this project, and am finally coming back to it after 3 years.
I participate in a low budget automotive racing endurance series, and I am looking for a solution to a unique communication problem.
Rather than purchase expensive radio equipment for our car, we simply...
Actually, I have not gotten the amp up and running yet. I have tried several different configurations based on circuits I found online, but I can't seem to get it to work. I haven't tried a regulator yet, my local radioshack was out. I plan on using a simple 7812 regulator, though. I'm not...
Ok, so my little amp just got more complicated.
I want to build into it a feature for doing something like this:
**broken link removed**
So I need to split both the incoming audio and microphone signals, and combine them with an ambient noise microphone, and send that signal to the gopro that...
No luck, just built this on a breadboard.
How much voltage is too much? I just measured what's coming out of my 12v DC converter, and it's closer to 20v.
I think I might add a voltage regulator in there somehow for consistency's sake...
Ok, I am trying to build my circuit, and this is my first attempt.
I stole the virtual ground circuit from the CMOY circuit, though I don't fully understand it.
Also, most of the lm386 circuits are either 5v or 12v, and I plan on powering directly from the DC in the car, so do I need to add...
So when I look up microphone attenuation circuits, I notice the basic circuit, like below, has a shunt to ground instead of just a resistor. Can I not do that in this case? If I can and want to do it this way, what resistor pot should I buy? It doesn't exactly give me a part number...
Interesting discovery today. Turns out the headset is Mono, and the remote runs directly to the right side input. So all I really need is to figure out how to make a mono variable microphone attenuator, I can figure out the headset amplifier.
What all is involved with a microphone attenuator and a PTT circuit that makes it so difficult and/or expensive?
And I understand what you are getting at in regards to headphone placement. My helmet has a little space where the earpieces fit quite nicely. One of our other drivers had to...
Hi, I am relatively new with building my own PCB stuff, but have been moderately successful so far.
So here's my problem. I operate an endurance road race team, and we are low budget. Rather than have some fancy radios, we use our iPhones as communication between the driver and pit. It works...
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