RP6 ROBOT SYSTEM - APPENDIX
C – Connector pinouts
This overviews provides you with the most important connector pinouts on the main-
board. Additionally we extended the list by a number of details for usage.
For the sake of completeness we start by defining the con-
nector pin assignments for the expansion connector once
again (s. chapter 2):
At the main-board pin 1 is located at the side of the white-
coloured labels XBUS1 and XBUS2, respectively, or at the
label “1” next to the plug.
+UB is the battery voltage, VDD the +5V-supply voltage,
GND the “negative” terminal (GND = Ground), MRESET
the Master Reset Signal, INTx are Interrupt-lines, SCL the
Clock- and SDA the Data-lines for the I²C Bus.
Important information:
Please restrict the maximal load for each expansion
connector's power supply lines VDD and +UB to
maximal 1A-currents each
(this is valid for both pins in TOGETHER! That is: Pins 4+6 (+UB) and 3+5
(VDD))!
Any other required signal lines can be soldered to the USRBUS connector pads, which
have been connected 1:1 to the pads on the board, this means the connectors pin1 is
connected to Y1, pin2 to Y2, etc...
The connector pin assignments for the 10pin connectors for the USB-interface are dif-
ferent from each other:
Main board: USB Interface:
Of course RX and TX must be
interchanged to allow com-
munication. Additionally, the
connector orientations had to
be mirrored to allow a correct
orientation for the protecting
pull-relief of the flat rib-
bon-cable's plug.
If the mainboard's connector is not being used for the USB-interface, we may connect
the device to other systems – e.g. for remote controlling the robot by UART from oth-
er Microcontrollers.
If you connect your own hardware, you usually need to connect TX to RX, RX to TX
and GND to GND. If you are unsure, use 1k Ohm series resistors for RX and TX and
remove them later when it works. Otherwise you may overload and destroy one of the
pins.
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