Circuit Schematics

1) Color LED Driver

Four 10mm color LEDs(LVX3630) are used on each side to indicate the state of the game. 2N7000 is selected as the switching element. All LEDs are red, yellow, or green.

2) Red "Sting" Ring LED Driver

Six red LEDs(LTL-307R) are connected in series to indicate that the player is stung. 2N7000 is selected as the switching element.

3) Hall Effect Sensor

Hall Effect Sensor (A1104) is used as the non-contact sensor to simulate the bee breeding process.

4) Stomp Pad Switch

The stomp pad is treated as a normally open, momentary switch.

5) Vibration Motor Driver

The vibration motor is driven using a 2N7000. A 3.3V regulator is used to deliver the correct voltage specified for the motor.

6) Race Player Servo

The race servos are wired to 5V regulators on the 13.6V power rail to ensure that enough current can be provided.

7) Tape Sensor

The tape sensor consists of an IR LED and an IR Photo-transistor in the the same package. The two schematics below show the LED driver and IR Photo-transistor sensor circuit. The Photo-transistor is used in a trans-resistive topology that outputs to a comparator, allowing us to create a digital signal for sensing black or white.

8) Force Sensing Resistor (FSR) Circuit

The FSR is used as the feedback resistor in an inverting op-amp configuration. This allows conversion or resistance to voltage. We used Part #402 in the following spec sheet (http://www.jameco.com/Jameco/Products/ProdDS/2128260.pdf) and designed the circuit to have the FSR saturate around 1.25V.

9) Communication

The communication harness was comprised of 5 lines. The data lines had inline 1K resistors and the Strobe and Ack had 10K pull down resistors.

9) Power Lines

220 uF bypass capacitor were used with the +5V and +13.6V power supplies.