32 analog inputs (Multiplexed)

The MicroLab can process 32 analog voltage changes at the same time. It will convert these changes into MIDI controller values. The controller values will be 7 bit. Newer versions makes it possible to receive and convert 10 bits (1024 values instead of 127). This is realised with the standard MIDI solution. First sending a 7 bit value (MSB), then send the next 3 bits(LSB). Put them together and you have 10 bits number.

[Standard MIDI solution: The first databyte will be send as one controller number; let's say controller number 0. The next databyte will be controller number 32. It always sends a second controller with an offset of 32.
example: first databyte on controller 14; next 3 bits will be sent on controller number 46.]

Keyboard matrix of 16 keys
To create MIDI note On/Off messages with the MicroLab, it is possible to connect 16 keys. These keys (or switches) must be connected in combination with the diodes, otherwise the read outs will not becorrect. The velocity of the note On messages is 65. The MIDI note Off message is the same as the note On, but the velocity is zero!

Ultrasonic distance measuring.
The MicroLab also makes it possible to use ultrasonic distance measuring. This results in two MIDI-controller numbers. Controller number 52 for the short distance (approx. 0 cm-80 cm) and controller number 53 for the longer  distance (approx. 60cm-150cm).

4 switch inputs
These are actually some extra inputs only sending on/off information. This means when a switch is connected, the MIDI-controller value is 0 or 127.

MIDI L ED connection
To check whether the MicroLab sends MIDI or not,  a LED (Light Emitting Diode) can be connected to the outside of the cabinet (of your choice). See chapter 2.