This is the construction instructions for the Light4 (rev. B) RoboBrick. The status of this project is work in progress.

Light4 RoboBrick (Revision B) Construction

The instruction steps for building the Light4 (Rev. B) RoboBrick are listed below:

1. Orient the board vertically. By convention the upper edge is north, the lower edge is south, the left edge is west and the right edge is east. Orient the board so that N1 is in the north west corner. [step1.jpg]
2. Take a 1×5 male header and using some diagonal cutters, snip off pin 2 marked with an `X' in the the diagram below:

   1

   X

   3

   4

   5

   Insert the header into N1 with pin 1 to the west. Solder one pin and verify that the header is flat on the board. If not, re-heat the solder pin and reposition the header until it is flat and vertical on the board. Solder the remaining 9 pins. [step2.jpg]
3. Find a 10pF capacitor and insert it into C1. Spread the leads a little so it will not fall out. Turn the board over and solder one lead. Turn the board over again and verify that the capacitor is still positioned vertically. If not, re-heat the lead you just soldered an reposition the capacitor. Now solder the remaining lead. Snip off the excess capacitor leads. [step3.jpg]
4. Find a 2K resistor (Red Black Red). If you can not find a 2K resistor, look for a 2.2K resistor (Red Red Red) instead. Bend both leads 90 degrees so that the resistor comfortably fits into R5. Just for consistency, place the red band up. (Resistors are symmetric, so there is no damage done if you install the resistor with the red band down.) Turn the board over, and spread the leads a little to keep it from coming out. Solder one lead. Now turn it over to verify that the position is acceptable. If not, re-heat the lead you just soldered and get it positioned to your liking. Solder in the remaining lead. Snip off the excess leads sticking out the back. [step4.jpg]
5. Repeat the preceding instruction with three more of the same resistors and insert them into R6 through R8. Solder them as in the preceding instruction. [step5.jpg]
6. Find a 220 Ohm resistor (Red Red Brown) and install it into position R9 and solder as before. [step6.jpg]
7. Install the remaining three 220 Ohm resistors in positions R10 through R12. [step7.jpg]
8. Find the 9-terminal terminal strip and insert it into N2. If all you can find is some 3-terminal strips, a 9-terminal strip can be assembled from three 3-terminal strip by sliding them together. Make sure that the wire holes point towards the east. Solder in 1 pin, verify position, and solder the remaining pins. (Note: this picture was taken with an 8-terminal terminal strip; you should use a 9-terminal terminal strip instead.) [step8.jpg]
9. Find a 10K Ohm trim potentiometer. Insert it into R1 so that the leads go in straight. Solder one lead, verify that it is flat on the board, solder in the remaining two pins and snip off any excess leads. [step9.jpg]
10. Perform the previous instruction on the remaining three potentiometers and install them into R2 through R4. [step10.jpg]
11. Find the pre-programmed PIC12C672 and insert it into U1 with pin 1 pointing up. Solder in 1 pin, verify position, and solder in the remaining pins. The picture highlights the notch in U1 with some white marker. [step11.jpg]