Found it - as usual: my bad. I forgot to add proper encryption level in my client sketch. After adding one line to my setup() routine the communication works as expected - here's the complete client's setup-function. void setup() { Serial.begin(115200); Serial1.begin(31250, SERIAL_8N1, 14, 13); // f...

After more testing, I figured out that this was a hardware issue. I was using a DC/DC step-down converter. Those devices use coils and it is widely known that those coils may inference with any wireless technology... I didn't know that and learned it the hard way. After switching to old-fashioned LM...

Hi all A while ago I wrote a sketch providing Midi over BLE. It allows me to connect apps on my iPhone to get paired with my ESP32. I can send Midi commands back and forth. It works with all apps I tried so far. I assume it is more or less based on common example we all can find in the internet. I d...

Looking here for good advises how to further nail down a strange issue with BLE and the ESP32. My application is a typical midi use-case. Using a D1 Wemos board with a self-designed midi interface, I use Pin 21 for midi-transmit and pin 16 for midi-receive. On top, I have another Midi connection usi...