User Guide

AXE029 BREADBOARD ADAPTER
revolution
Revolution Education Ltd. Email: [e-mail] Web: www.rev-ed.co.uk Version 1.0 05/06/06
AXE029.PMD
Contents:
• PCB adapter PCB
• R1 10k resistor (brown black orange gold)
• R2 22k resistor (red red orange gold)
• H1 3 pin header and jumper link
• CT1 stereo download socket
• H2,3 4 pin double sided headers
Description:
The PICAXE breadboard adapter provides a simple method of
connecting the AXE026 serial or AXE027 USB PICAXE cable to
a prototyping breadboard.
The adapter supports the standard download circuit (10k and
22k resistor) and has a 2 way jumper to allow ease of layout
of 18 and 28/40 pin PICAXE circuits on the breadboard.
Assembly:
1. Solder the two resistors, 3 pin header and stereo socket so the components lie
on the top side of the board (solder joints underneath).
2. Solder the two 4 pin headers so they lie on the underside of the board (ie the
solder joints for the two 4 pin headers should be on the top of the board). There
are two rows of pins simply to increase stability and provide a more reliable
contact in the breadboard. If desired one row may be omitted.
Use:
The output (TXD) connection on the adapter can be moved between two positions
via the jumper link. This is to provide the correct pin layout for inserting the
adapter directly beside an 18 or 28/40 pin PICAXE chip. For 8 pin PICAXE chips
either position may be used (breadboard wires are required between the adapter
and the 8 pin chip).
The pin not in use is left open circuit and has no affect on the breadboard circuit.
The board does not contain the PICAXE reset pull-up resistor (18/28/40) or
external resonator (28/40). These must be added on the breadboard layout.
For further details about the PICAXE chips please see the PICAXE manual.
Circuit Diagram:
x
x
x
x
x
serial out (01)
serial in
serial out (02)
0V
22k
10k
AXE029
Circuit
Jumper
TXD RXD N/C 0V
N/C RXD TXD 0V
18
28/40