开云体育

I like your mic. How did you mount it in the pvc tube and did you add any packaging or padding material inside or any spit screen in front of mic cartridge? I was thinking of using a smaller diameter

I know it is not perfect. But the LM386 seems noisy and micro phonic. It might even be oscillating some at full volume. I can turn it all the way up and smack the LM386 with the handle of a small

I took and old version and added conditional assembly code. Have not done it for a real recent version. You add stuff in setup to get interrupt going too. You substitute the tuning code. you add

The tuning voltage into the Raduino is somewhere between 0 and 5v, determined by the position of the pot. ?Doesn't make much difference if the pot is 1k or 100k, the pot is simply a voltage divider.

What's the NEC board? Vince.

At least part of the problem is that my encode is using a Mega 2560 Arduino, which has 5 external interrupts while the Nano and Uno only have two. Near the top of my code (line 120) are: #define

So, I've been trying to get my Arduino UNO to read a rotary encoder. And have been having zero success (beyond a clean compilation). I'm using the Rotary library from?brianlow on GitHub (

Eric KB1VNA wrote... I like your case! Are you sure it isn't going to 10 KHz steps when you get to the ends of the pot? I was originally going to do the mod adding a fixed resistor on the top

Good afternoon all. I've finally got a Bitx40 on the air! Another local ham had acquired a Raduino version and decided he had too many projects to get it going so he sold it to me for just under

I checked my work and found a wrong connection on my part.? I fixed the connection and the circuit now works as described, reducing the PTT pop and noise on initial transmit. ? I did not experience

Excellent advocacy David. Happy to be one of the followers. Doug KA4DXX

Look how I connected mine in the post before the one you posted my audio was bad till I changed the input to the AGC circuit I also dropped the audio gain of the audio amp between pins 1,8 there's a

hey, that is a very nice picture of the bitx40 break down! - f

About “ground loops” please read... http://www.mosaic-industries.com/embedded-systems/microcontroller-projects/measurement-techniques/instrumentation-amplifier-ground-loop-isolator Sent:

I'm just getting started with Diptrace, so this is the best I can do right now. All of the electrolytic capacitors are 330uF 16V and all the rest are 0.1uF disk ceramics. I separated out J1's 12V in

I think that I had the VK3YE AGC installed correctly, but the audio output had the high tones clipped off, and there was a motorboating sound with the audio that I could hear. I could understand, but

Do you mean pin 7, not pin 1?

1/4inch - 28tpi is UNF 1/4inch - 20tpi is UNC Ted ZL1BQA

Hi, The LM386 has no inhibit control so we have to find different solutions, if possible. As Jerry reported "Dumping 12v into the bypass pin of the LM386 to quiet it down is a bit unorthodox". If you

Excellent advocacy David. Happy to be one of the gang. Doug KA4DXX