====== Drive Board from OST ======
===== db11 Board =====
<box 30% right green| **Features**>
  * 4 Maxon ESCON 50/5 Drives
</box>

  * {{:embedded_systems:imx6:db11schematic.pdf|Schematics}}
  * Repository on github with Altium files https://github.com/ntb-ch/db11
  * Important: keep connections to cb20 reasonably short! Differential line drivers for the encoders are located on the db11. From there single ended lines lead to the cb20.
<box 30% right blue| **existing boards**>
  * 6 x db11 2015 (incl. production in 2017)
</box>

===== Supply =====
The board is supplied with 5V and 3.3V directly from the cb20, see below. On P6 you have to deliver 24V (square pad = Gnd).\\ 
Important: Connect GND of P6 with GND of the cb20.

===== Motor Connection =====
A simple DC-Motor (single coil) must be connected on P5(Pin 1 and 2).

===== Connections to the cb20 Board =====
Connect the following lines when using all 4 drives:
|      ^cb20      ^^db11      ^^
|Signal|Connector|Pin|Connector|Pin|
|3.3V  |P8     |1  |P1     |25  |
|DGND  |:::    |2  |:::    |2  |
|enc1/A|:::    |3  |:::    |3  |
|enc1/B|:::    |4  |:::    |4  |
|enc2/A|:::    |5  |:::    |5  |
|enc2/B|:::    |6  |:::    |6  |
|enc3/A|:::    |7  |:::    |7  |
|enc3/B|:::    |8  |:::    |8  |
|enc4/A|:::    |9  |:::    |9  |
|enc4/B|:::    |10 |:::    |10 |
|enable|P9     |3  |:::    |11 |
|ready1|:::    |5  |:::    |12 |
|ready2|:::    |6  |:::    |13 |
|ready3|:::    |7  |:::    |14 |
|ready4|:::    |8  |:::    |15 |
|5V    |P10    |1  |:::    |1  |
|AGND  |:::    |3  |:::    |18 |
|dac1  |:::    |5  |:::    |17 |
|dac2  |:::    |7  |:::    |19 |
|dac3  |:::    |9  |:::    |21 |
|dac4  |:::    |11 |:::    |23 |