BUILDING THE TOP (B.O.E.) CIRCUITS


THE SCHEMATIC

The schematic is a JPEG file that is quite large (about 1 MB), clicking the link will open it in the current window, or you may right click it and choose "Save As".

Schematic-Horizontal (better for viewing on computer screen)

Schematic-Vertical (better for printing)

THE INFRARED

Wire the 2 IR LEDs, and the front 2 IR Receivers as shown.  Note that on the picture of the top (bottom of this page, and on the previous page) that the front pair of IR devices are positioned such that they are pointing 30-50 degrees off center.  Wire in the back two IR receivers as shown in the schematic.  These two are for the television remote control option.  You might think that "Wait, what if I am in front of the robot, then I can't send it a command from the remote?"  Well, that's not quiet accurate, IR is good at bouncing off objects, and since you are typically higher up that the robot, the IR signal, if not directly hitting the receivers should bounce off the back of the robot and hit the receivers.  The resistors in the circuit are 220 Ohm.  The front left IR receiver should be connected to P11, back left to P10, front right to P0, back right to P8.  The both of the IR transmitters should be connected to P1.

THE WHISKER DETECTION

Position the Three-Prong headers such that they are as far forward as possible on the BOE bread board.  Then position the Whiskers (made out of paper clips, and which are attached to the Standoffs on the corners of the BOE) such that when they make contact with something, they close the circuit, and the BASIC Stamp can become aware of this.  Use 10K Ohm resistors in this circuit.  This PDF picture gives a good idea of how to connect this circuit, but be aware that we are using P4 instead of P5 and P9 instead of P10.

THE DISPLAY LEDS & THE SERVOS

These are pretty simple, so they are lumped together.  Connect the left servo into the P15 servo port, make sure the black wire is closest to the breadboard.  The right servo goes into port 14. 

Connect one LED to P3 and then to a 220 Ohm resistor and to ground.  Do the same with the other LED, but instead place it in P6.

PICTURE (SAME AS PREVIOUS PAGE):