Datasheet

7
revolution
Revolution Education Ltd. Email: [e-mail] Web: www.rev-ed.co.uk Version 1.0 01/09
AXE091.PMD
AXE091 PICAXE DEVELOPMENT BOARD
0V
pin
330R
Optional 3V backup supply for DS1307 RTC
(note a SM socket may also be fitted under the board)
Input and Output Device Information:
Keyboard Connector (KD,KC)
The 6 pin mini DIN connector provides a connection and power to a computer
style keyboard (not included). A 4k7 pull-up resistor is included on the data and
clock lines.
Comamnds - kbin, keyin, keyled
Infra-red receiver (IRR)
The infra-red receiver circuit including pull up resistors in built onto the board. The
infra-red signal may be generated via the on-board infra-red LED or an external
device like a TV style remote control.
Comamnds - irin, infrain, infrain2
Infra-red LED (IRL)
The infra-red LED will light when a positive signal is applied. The cathode of the
LED is connected by a 330R resistor to 0V.
Comamnds - irout, infraout
Output LEDs (L1, L2, L3)
Three LEDs are provided (L1 to 3). The LED will light when a positive signal is
applied. The cathode of the LED is connected by a 330R resistor to 0V.
Comamnds - high, low, toggle
LDR Analogue Input (LDR)
The LDR is arranged with a 10k resistor in a potential divider arangement. The LDR
is connected between the input and V+, the resistor between the input and 0V.
Commands - readadc, readadc10
Preset Pot Analogue Input (POT)
The preset pot is a 10k device connected directly between the V+ and 0V power rails.
The wiper of the preset pot is connected to the input.
Commands - readadc, readadc10
Digital Input Switches (SW1, SW2, SW3)
Three switches are provided. The input is tied low by a 10k resistor, with the switch
connected between the input and V+. Therefore pressing the switch will result in a
high signal.
Commands - if pin... then
DS18B20 Temperature Sensor (TMP)
The digital temperature sensor (located at the bottom right of the breadboard) and
includes the 4k7 pull up resistor on the data line.
Commands - readtemp, readtemp12
Servo header (SVO)
The servo header provides a convenient way to connect a radio control style servo.
The power supply is connected directly to the header (R & B) and the signal wire
(Y) is connected to the SVO header.
V+
0V
10k
miniature
LDR
pin
V+
0V
10k
Pin
0V
4k7
5V
330R
1
2
3
IRR
5V
0V
KEYBOARD
4k7
V+
0V
Clock
Data
4k7
SCL
SDA
4
3
5
1
6-pin Mini-DIN (PS/2)
1 - Data (to PICAXE input7)
2 - Not used
3 - 0V Ground
4 - +5V Supply
5 - Clock (to PICAXE input6)
6 - Not used
Socket (on pcb)
21
43
65
DS18B20
5V
0V
temperature
sensor
4k7
TMP
V+
data
0V