What exactly can you do with iomixer?

iomixer tests playlist: MIDI in/out demo: 0:00 Intro 1:42 Digital input/output 3:02 Analog input, servo output 4:09 Servo PWM vs duty cycle PWM 7:24 Addressable RGB LEDs 10:24 Rotary encoder 11:49 Mini displays 13:50 IMU (accelerometer, gyro) 16:04 Barometer 18:00 Compass/magnetometer 20:08 Load cell 22:43 PPM output 24:20 PPM input 25:48 Serial input (ibus, sbus) 31:44 PWM input 32:56 nRF24 transceivers 36:17 GPS 40:00 Serial bus servos 43:44 MIDI input 46:36 Logging 50:12 Gamepad emulation 52:43 G-Code style interaction 55:10 Outro