Datasheet
2013 Microchip Technology Inc. DS90003094A-page 5
TB3094
FIGURE 7: ACCELERATION DATA
GAME WINNER
The participant with the highest score is the game
winner, and will see the blue LEDs at the top of the
development board flash. The participant with the
lowest score will have the red LEDs (D3 and D4) light
up momentarily.
BATTERY LOW INDICATOR
If the AA battery drops below a certain voltage, then the
message “-Lo-” will appear on the screen. If the battery
is not replaced, the game may not work properly and
wireless transmissions will have limited range. This
level is set by BATTERY_LOW_VALUE in main.c.
BOARD FEATURES
The development board contains the following features
to enable development:
1. USB HID bootloader – the PIC18F67J94 micro-
controller can be reprogrammed using a USB
cable.
2. Multiple test points:
a) TP1 – DI signal connects to MRF24J40 and
RA1
b) TP2 – SCK signal connects to
accelerometer and RA6
c) TP3 – DO signal connects to MRF24J40 and
RA0
d) TP4 – SDI signal connects to accelerometer
and RA4
e) TP5 – CLK signal connects to MRF24J40
and RA3
f) TP6 – SDO signal connects to
accelerometer and RA5
g) TP7 – connects to RF5, and commonly used
for UART ‘printf’ data
h) TP8 – connects to RF6, and can be
user-defined
i) TP9 – CS signal connects to accelerometer
and RC7
j) TP10 – battery output voltage, connects to
RG4
k) TP11 – Ground
3. ICSP™ programming connection is available on
J2. The connector is not populated, but can be
added to allow programming with supported
Microchip programmers.
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