====== AIN Module ======

**AIN** means "Analog Input". Analog is meant as a range; in terms of voltage this range is normally from 0 to 5 V, in terms of programming this is normally a 10bit value from 0 to 1023. 
It's quite clear if you see this in contrast to the Digital Inputs (via [[DIN Module]]), which know just two states: on or off, 1 or 0.

The AIN module is normally used to connect potentiometers to the Midibox, usually these two types:
  * circular pots => Turning knobs
  * linear pots => Faders

:!:
**Potentiometers (also "Pots") should have a typical resistance value of 10 kΩ.**

[[Motorfader]] have to be connected to a special module called [[mf_ng_module]].

It's also possible to use other 0-5V analog voltage sources. The [[ACSensorizer]] is a user project especially developed for AIN sources (like sensors) that do not deliver 0-5V exactly.

The AIN module uses CMOS 4051 multiplexer ICs, each of which provides 8 analog inputs.  The most common AIN configuration is sometimes referred to as AINX4, because it has 4 such ICs, for a total of 32 inputs.  Two AINX4 boards can be cascaded for a total of 64 inputs.  Alternatively, an AIN module could be populated with as few as one 4051, if 8 or fewer inputs are required.  In MIDIbox-jargon, this could be called AINX1.

The AIN module(s) connect to J5 on the [[core module]].
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====== See also ======
  * [[http://www.ucapps.de/mbhp_ain.html|AIN Module]] <sup>uCApps</sup>\\
  * [[ain board parts list]]
  * [[ACSensorizer]]
  * [[http://www.ucapps.de/midibox_ext.html|Midibox Extensions]] page
  * [[http://sound.westhost.com/pots.htm|sound.westhost.com/pots.htm]] interesting background informations about pots