Digi BL1800 user manual Prototyping Board, Top Side

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-6shows 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.

Cut

Cut all gray

Cut

Cut

traces shown

Cut

J2

PB1

PB3

PB5

PB7

PCLK

PE7

PE5

PE3

PE1

GND

HV1

HV3

+RAW

VCC

LS1

R3

VCC

PA1

PA3

PA5

PA7

GND

Buzzer

3

2

Top Side

J3

COIL(+)

COIL()-

R1

+

1

GND PA0

PA2

PA4

JP1 PA6

DS1 PA0 GND

DS2 PA1 PB0

DS5 PA4 PB6

DS6 PA5 WDO

DS7 PA6 GND

DS8 PA7 PE6

S1 PB2 PE4

S2 PB3 PE2

S3 PB4 PE0

S4 PB5 HV0

GND GND HV2

K

GND

POT PE4

HV0

GND AD0

DS3 PA2

JP2

RT1

BZR VCC

K

AD0

PD0

DS4

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

76 Jackrabbit (BL1800)