Pioneer 3TM User Manual

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Appendix B: Motor-Power Board Connectors 
 
Appendix B 
Power Distribution
 
ActivMedia Robotics’ original H8S-based Pioneer 2 robots have two separate boards 
which interface with the H8S microcontroller and provide power for the motors as well as 
conditioned power and signal paths for the standard and accessory onboard 
electronics.  The new Plus-series Pioneer 2 robots and the Pioneer 3s have just a single 
Motor-Power Board.  Consult Appendix A for H8S-controller and User Control Panel 
interface details. 
P
IONEER 
AND 
2-P
LUS 
M
OTOR
-P
OWER 
B
OARD
 
The new Motor-Power Board for the Pioneer 2-AT8 Plus, –DX8 Plus, and all Pioneer 3 robots 
contains all the features of the two-board legacy system and lots more. 
Figure 26. New Pioneer Motor-Power Board 
Configuration for Current and Temperature Sensing 
The motor drivers are configured to limit 10A per motor, and to share the drivers with both 
motors on each side of the AT.  Accordingly, there are two additional motor-current 
sense resistors added to the AT versus DX board: R3 and R26, as well as R1 and R2. 
The new Motor-Power board also has a set of 0-ohm resistor pads that may be 
configured to engage the analog-to-digital input ports AN1 and AN2.  By adding jumpers 
to R60 and R62, for example, the board is configured to sense motor current draw on 
AN1 and AN2, respectively. 
Instead, by jumpering R77 and R78 and by attaching temperature sensors to two motors 
via the Motor Temperature Sensors connector, the AN1 and AN2 ports respectively may 
be used to protect against motor overheating.  This configuration is currently enabled in 
the new ATs, but not yet supported in AROS. 
 
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