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ARDUMOBO blog 4: Mounting the hardware on the truck

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Connecting the engines 

The following photo shows the connections to the truck engines. The engines are connected to the motor driver shield using the metallic connector provided in the kit.

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Connecting the sensors

The next photos show the truck with the cabin on. 

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Here are some explanations:

A temporary cardboard box holding the Arduino Uno and the two power supplies was mounted on the truck. The sensors were also mounted on the truck with wire frames. A small breadboard connects VCC and GND pins of the sensors to Arduino. The ECHO and TRIG pins of the two sensors are connected directly to Arduino pins. All Dupont jumper wires  will be replaced with AWG28 wires connected to D-1000 4 position connectors. The small breadboard will be replaced with an Ardumobo expansion board (to be designed).

Arduino shield connections:

  • 4 wires into the metallic female connector. The male connector is connected to the traction and steering motors.

Power supplies connections:

  • 2 wires connected to the 6V motor shield power supply. These wires will be connected using 2 positions of a D-1000 4 positions connector to a separate ArduMobo expansion board.
  • 2 wires connected to a 5V Arduino power bank. These wires will be eventually connected using the other half of the D-1000 4 position connector to the ArdMobo expansion board. 

Sensor connections:

  • The front ultrasonic sensor will be connected to Arduino using a 4 position D-1000 male connector. The female side of the connector will go into the ArduMobo expansion board.  
  • Connection of the rear sensor is similar to the front sensor.  

Future work items

  • Design ArduMobo board. Board will have 3 connectors ( 4 position screw-in type as the one used on the DF-robot DRI0017 board). Two connectors will be used to connect the two sensors, the other one will handle power wires for the two power supplies.  The board will have power switches and LED indicators for both power supplies.  
  • Crimp the D-1000 connectors and finish wiring once I get enough contacts (the kit only contains 10 pairs of contacts and they are out of stock at the time of writing.)
  • Replace the temporary cardboard box with a permanent mounting frame.