Consists of:
PIC32 Microcontroller (MCU)
Jumbo Red LEDs
IR LED to generate pulses at a set frequency
Proximity Sensor (HW201)
Gameplay / Sudden Death Switch
SPI Lines connecting to Follower
N-channel MOSFET
PIC32MX170F256B
SPI Communication from
Leader to Follower
Servo Motor control for
YARD Indication
Ultrasonic sensor Input Captures
Jumbo Red LEDs
For Gameplay Indication
Ultrasonic Sensor (HC-SR04)
Used for:
Wall detection to avoid
crashing into obstacles
Tree detection to signal
when to fire ACORNS
Proximity Sensor (HW-201)
IR sensor that generates and captures its pulses
Indicates when an obstacle is near
Used for ACORN detection
N-Channel MOSFET (2N7000)
Connects IR LED to ground
Purpose for using the MOSFET is to allow more current to flow through IR LED; more current = stronger pulses = easier detection
*Note: the image shows the follower PCB. The leader PIC PCB is soldered exactly the same, however female jumpers are connected to different pins*
Consists of:
PIC32 Microcontroller (MCU)
SPI Lines connecting to leader
Opto Reflective Sensors
(3X in an Array)
H-bridges & Motors
2X driving motors
1X Spoon / Launch motor
PIC32MX170F256B
SPI Communication from
Follower to Leader
Motor control for Driving
and ACORN Launching
Analog tape sensing from
Opto Array
QTR-3A Reflectance Sensor Array
Tape Sensing
Packs 3 IR LED /phototransistor pairs onto a
1.25″ × 0.3″ board
The sensors are mounted on a 0.375″ pitch
Drive Motors (33GN2732)
Required to use
Supplied by SPDL
Spoon / Launch Motor (638354)
IR sensor that generates and captures its pulses
Indicates when an obstacle is near
Used for ACORN detection
Magnetic Encoder Pair Kit (Polulu #3081)
Used PID control to drive straight and rotate about our center of rotation
Spider coupler connects encoders to drive motors
Consists of:
Trans-Resistive Circuit
1X Phototransistor
3X Op-Amp
1X Comparator
Various resistors
2X AC Coupling (High Pass Filters)
PCB Connectors
Bypass Circuit
Reference generator
Consists of:
Trans-Resistive Circuit
1X Phototransistor
3X Op-Amp
1X Comparator
Various resistors (note that these resistors have not been tested / tuned)
2X AC Coupling (High Pass Filters)
PCB Connectors
Bypass Circuit
Reference generator
Signal Conditioning Notes are linked