This robotics platform is specially designed by 4tronix. Ready-built main chassis and no soldering require. Great for Raspberry Pi

1. Check all parts are present

 Basic Hardware Pack
  • 1 x Ready-built chassis with motors, gearboxes, battery holder, speed sensors
  • 1 x Top plate (injection-moulded ABS)
  • 4 x Moulded wheels with "Supergrip" tyres
  • 1 x Pack of screws
  • 1 x Pack of ABS mounting parts

Screws Pack

  • See Step 2 below

Optional Boards

  • 1 x Raspberry Pi (Model A or Model B)
  • 1 x L298N module
  • Breadboards with LEDs, resistors, etc
  • 5V to 3.3V Level converters
 2. Screws Pack
  • (A) 2x for mounting IR obstacle sensors
  • (B) 4x for mounting mini Pan/Tilt assembly
  • (C) 4x for use with small 8mm spacers
  • (D) 8x for mounting top plate with long pillars
  • (E) 10x for mounting Raspberry Pi and L298N modules
  • (F) 40x for long pillars and offset stand-offs

3. Attach long pillars for top plate
  • Identify the 4 long pillars with the flat ends as shown inset
  • Using the screws (D), fit a pillar into each corner of the main chassis
  • Make sure that the pillars are seated well and screwed in firmly, but not too tight
NB. If you have the PiRoCon Robotics Controller board, then please now visit Building Initio with PiRoCon Robotics Controller for further instructions
4. Fit the L298N Motor Driver Board (included with most kits)
  • Use 4 screws (E) to fit the L298N board
  • Connect the left motor Red/Black wires to L1 (Red) and L2 (Black)
  • Connect the right motor Red/Black wires to L3 (Black) and L4 (Red)
  • Connect the Red/Black wires from the power supply PCB to VCC (Red) and GND (Black)
  • Push the female end of the 4-way Dupont wire onto the IN1..IN4 terminals
  • Connect the Red Dupont cable with bare solder end into the 5V output on the L298N board
  • Connect the Black dupont cable with bare solder endinto the GND connector on the L298N board - as well as the Black wire from the power supply board (ie. there are two wires connected into this terminal)
5. Assemble Top Plate and Prepare for the Raspberry Pi
  • Use 4 screws (D) to fit top plate, ensuring the Raspberry Pi mounting positions are above the battery holder and ensure the vertical pillars are fitted correctly into the slots on the bottom of the top plate
  • Use small side-cutters or similar to snip away the mounting pillar shown, to prevent it colliding with the SD Slot on the Pi
  • Screw an offset pillar into the position shown using s screw (E)
  • The mounting position for the Pi is shown with red rings in the lower photo
6. Mounting the Pi and Connecting the Wires
  • Use 2 screws (E) to mount the Pi in the positions shown with red rings in the photo above
  • WARNING: DO NOT CONNECT THE Red 5V line at the same time as the Pi is powered from the USB. The Pi may be damaged
  • Red wire from L298N 5V to Pin 2 on Pi
  • Black wire from L298N GND to Pin 6 on Pi
  • IN1 from L298N to pin 11
  • IN2 from L298N to pin 12
  • IN3 from L298N to pin 13
  • IN4 from L298N to pin 15
  • Double check the wiring is correct before adding any power to the board
7. Optional - Adding some LEDs to Flash
  • Stick the self-adhesive mini-breadboard near the front of the initio
  • Use the LEDs and resistors
  • Connect the cathode of both LEDs to the same row on the breadboard and connect this to a GND on the Pi using a Male-Female Dupont wire (eg pin 14)
  • Connect the Anode (long lead) of each LED to one end of a 330 ohm resistor (ie. 2 leads separately connected to 2 resistors)
  • Use 2 more Male-Female Dupont wires to connect the other ends of the resistors to Pi GPIO outputs (eg. pin 16 and pin 18)
  • See the close-up photo below
8. Close-up of Breadboard Wiring
NB: Yellow wire is shown one hole to the right of where it should be!
    The Completed initio (Arduino version shown)
    Coming Soon: Add on pack with sensors and level converter for Raspberry Pi
    Remember - Do not connect 5V sensors to the GPIO input pins as they can only accept up to 3.3V without damage.