emmanuel63

I am sorry for the multiple posts. I don't understand what happened...

I am sorry for the multiple posts. I don't understand what happened...

Hello, I have recently started a thread about a similar project. I start a new thread because I have completely re-designed my Theremin. I have minimised the number of components to make it easy to build on a simple strip board. The code is...

Hello, I have recently started a thread about a similar project. I start a new thread because I have completely re-designed my Theremin. I have minimised the number of components to make it easy to build on a simple strip board. The code is...

Hello, I have recently started a thread about a similar project. I start a new thread because I have completely re-designed my Theremin. I have minimised the number of components to make it easy to build on a simple strip board. The code is...

In my humble opinion, I think 2x 22uF won't hurt USB powering devices. I have often added capacitors to limit noise up to 100uF, without troubles for now. Some circuits inject so much noise in power rails, like little class D amps (pam8403), oled...

Interesting. I would like to test it, but the schematic résolution is low. Could you post a new schematic with higher resolution ? Thank you Emmanuel

I had good results playing samples with playMem. You have to prepare your samples with wav2sketch. I suggest 16 bits, 22kHz. The problem is that the memory is going to be full very quickly. This is perfect for a drum kit, with short sounds. But...

Hi, I would encourage you to go with the "synth approach" as well. Could you tell us more ? - do you want to build a monophonic or polyphonic synth ? - what kind of keyboard do you use ? - do you want to add a lot of knobs and switches ? - do you...

I will certainly add a switch to choose the orientation of the pitch. I have tested it quite a lot now, and it is really fun to play. There is of course room for improvements ! I have used a VL53L1X sensor to mesure distance. I appears to be a...

Try to connect the Power bank GND to : - audio Gnd (G) of the PAM - and Power supply Gnd (GND) of the PAM

You can try to connect PAM audio Gnd to Teensy Gnd (not audio shield Gnd). Who knows...

Why not ! I didn't know about it. I will try to come.

These amps are really a pain. If noticed also that some of them, depending of the supplier, are not exactly the same. Some avec smaller caps and tend to produce more noise. When you insert a cap, be sure to solder it directly on the amp, on + and...

Hi, These class D amps inject terrible amount of noise in power rails. The are in fact very difficult to use. I say that, but I use them a lot, since they are so efficient ! I can get rid of the noise doing this : - try big cap (100 to 200uF) on...

Hello, Here is another Theremin ! This one is very simple : a Time of Flight sensor for the pitch, and FSR for volume. The synth section is also very simple, just one oscillator, a LP filter, minimalist LFO and reverb. In fact, this project is...

Hello, So nice little instrument... A few years ago, I did this : Emmanuel