Testing was successfully done! 

• ✓ ESP32 flashing and Serial works
• ✓ Pressure Sensor works
• ✓ BMX160 works
• ✓ Buzzer Works
• ✓ Debug LED works
• ✓ Battery sense Pin ADC works
• ✓ Battery charging works incl. charging indicator LEDs!
• ✓ Reset and Event Button are running
• ✓ SD-Card works

The SD-Card Holder is pretty shitty and already kind of broke after a few times in and out. I created a 3D case which is about to be printed. With that case I can attach the device via the Wahoo connector to any bike.

I also wrote the code for data-logging to write the sensor data to the SD-Card. With this setup I can go out and collect data of different jumps and tricks on a bike which I then can throw into some TinyML processing tool like Edge Impulse or similar. 

I still need to lean about machine learning on microntrollers.