Digi JACKRABBIT BL1800 - Manual (Page 80)

76 Jackrabbit (BL1800)
B.3.2 Prototyping Board
To maximize the availability of Jackrabbit resources, the demonstration hardware (LEDs,
switches, potentiometer, buzzer) on the Prototyping Board may be disconnected. This is
done by cutting the traces seen between and within the silk-screen outline of headers JP1
and JP2 on the Prototyping Board. Figure B-6 shows the 16 places where cuts should be
made. An exacto knife or high-speed precision grinder tool like a Dremel
®
tool would
work nicely to cut the traces. Alternatively, if safety is a major concern, a small standard
screwdriver may be carefully and forcefully used to wipe through the PCB traces.
Figure B-6. Where to Cut Traces to Permanently Disable
Demonstration Hardware on Prototyping Board
Jumpers across the appropriate pins on headers JP1 and JP2 can be used to reconnect spe-
cific demonstration hardware later if needed. Each pin is labeled on the PCB to facilitate
placing the jumpers. The jumper positions are summarized in Table B-1.
Table B-1. Prototyping Board Jumper Settings
Header JP1 Header JP2 (continued)
Pins Description Pins Description
1–2 Buzzer 5–6 PA2 to LED DS3
3–5 K to +5 V 7–8 PA3 to LED DS4
5–6 K to +RAW 9–10 PA4 to LED DS5
7–8 Potentiometer or Thermistor 11–12 PA5 to LED DS6
9–10 Interrupt Enable 13–14 PA6 to LED DS7
Header JP2 15–16 PA7 to LED DS8
Pins Description 17–18 PB2 to switch S1
1–2 PA0 to LED DS1 19–20 PB3 to switch S2
3–4 PA1 to LED DS2 21–22 PB4 to switch S3
Cut all gray
traces shown
Cut
Cut
Cut
Cut
Buzzer
Top Side
J2
J3
JP1
JP2
1
2
3
R3
R1
LS1
RT
1
GND PA
6
PA
4
PA
2
PA
0
PA
7
PA
5
PA
3
PA
1
VCC
GND PE2 PE4 PE6 PE0 HV0 HV2
K
GND PB5 PB4 PB3 PB2 PA
7
PA
6
PA
5
PA
4
PA
3
PA
2
PA
1
PA
0
GND WDO PB6 PB4 PB2 PB0 GND
VCC +RA
W
HV3 HV1 GND PE1 PE3 PE5 PE7 PCLK PB7 PB5 PB3 PB1 GND
BZR VCC
K
AD0
PE4 POT HV0 +RAW
DS5 DS4 DS3 DS2 DS1 DS6 DS7 DS8
S1 S2 S3 S4
GND
COIL(+) COIL(-)
PD0 GND
AD0
+