Return to the BUILD
“This issue’s parts include the microcontroller unit that acts as R2-D2’s brain. It is equipped with sockets into which all his sensors, motors, displays, other electronics, and power supply will be plugged.“
Contents
Parts
Materials: The non-electrical parts in this issue are plastic.
Hardware
| Type | Quantity | Size | Color | Head Type | For |
|---|---|---|---|---|---|
| Screw | 5 | 2.3x6 mm | Black | Pan | Plastic |
| Screw | 3 | 2.5x10 mm | Silver | Flanged | Metal |
| Screw | 3 | 2x4 mm | Silver | Pan | Metal |
| Screw | 5 | 2.5x6 mm | Silver | Pan | Metal |
| Screw | 5 | 3x12 mm | Silver | Pan | Metal |
| Nut | 3 | 2.5x5 mm | Silver | ||
| Spring Washer | 5 | 3 mm | Silver | ||
| Spring Washer | 7 | 2.5 mm | Silver |
Magazine
- Building The Galaxy – Picture-Perfect Planets
- Droid Directory – R2-D2 Astromech Part 15
- Understanding Robotics – Robotic Hands
- Build R2-D2: Model Instructions
Build
Fitting the MCU
Steps 1-2
Fit one of the Cable Clips over these two mounting holes in the MCU with the open end towards the edge of the MCU, as shown. Then, secure the Cable Clip in place with two (2) 2.3×6 mm black screws:
Steps 4-5
Repeat these steps with the other Cable Clip and two (2) more 2.3×6 mm black screws, facing the open end the same way as shown:
Step 6
On the back of the MCU are two slotted lugs which will be used to mount it in the next steps:
Step 7
Those lugs will fit into these keyhole slots of the Circuit Board Bracket we installed in the previous issue:
Steps 8-10
Fit the MCU lugs into the keyhole slots (facing this direction) and slide it down the slots to secure it in place, as shown:
Thoughts
“The chief function of the body is to carry the brain around.” – Thomas A. Edison
Our little R2 unit is no different. It would be nothing without this MCU ‘brain’. Based on the size of it, there is a lot going on inside that box. I am excited to finally see it all hopefully working soon!
Next Up
Issue 95 – Dome Spindle, Dome Motor Support Plate, Bearing Housing Halves, Dome Drive Shaft, Cable Retainer, Bearings/Retainer