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Wireless Arduino programming

I have recently been experimenting with some XRFs from Ciseco Plc. The firmware (v0.36) on these XRFs is beta but I understand it is about to be released. I have tested this on a Nanode and also on a Ciseco Xino for Atmel, it should work with a standard Arduino but I have not tested […]

Arduino reading a CSV pachube feed with the ENC28J60

The question of how to do GET requests with the ENC28J60 arose recently so here is an example. This is using the etherShield from Nuelectronics and @andrewdlindsay‘s etherShield library.

The code assumes some familiarity with the ethershield examples.

#include <etherShield.h> static uint8_t mymac[6] = {0x54,0x55,0x58,0x10,0x00,0x28}; static uint8_t myip[4] = {192,168,1,25}; // Default gateway. The ip […]

Hacking the pink IM-Me Part 1

This is the first of several posts about the IM-Me pink wireless toy from Mattell. The aim of this post is to collect all of the relevant links I have found useful from the web. You can currently get one (or more) of these toys for £8.99 at Amazon The IM-Me is based upon the […]

MISO and Arduino Ethernet Shields

Both of the major Arduino ethernet shields (standard Arduino and NueElectronics) have issues with the MISO signal which prevent them being used with other SPI devices.

The standard Arduino shield uses the Wiznet5100 chip – this chip has a flaw in that the CS signal does not tri-state the MISO line. The Wiznet application note […]

I2C LCD and keypad controller using ATTiny2313

A while back @andrewoke was bemoaning the availability of an open source HD4470 I2C LCD and keypad controller. So I wrote one – the code fits into an Attiny2313 (just). ATTiny2313 chips are available for under $2. The AVRDude command line I use to program the ATTiny2313 with Adafruit’s USBTiny programmer is: (note the fuse […]

New Home Monitoring – part 2

********* Notice – the protocol to be used has pretty much completely changed. I am adopting the aProtocol described on the OpenKontrol web site

aProtocol is essentially a hub polling devices, it does allow for devices to announce events but in the main it is polling. The aProtocol is still work in development, I have […]

Arduino XBee shield issue

The Arduino XBee shield uses a resistor divider to connect the TTL 5V Arduino Tx to the XBee Din line. This has the side effect of pulling the Din line to GND if the Arduino is not asserting the Tx line. Problem is that the Arduino does not have control of the TX line during […]

New home monitoring setup – part 1

Updated 26/2/2010 I have been looking at revisiting my home monitoring setup for some time. Whilst I have considered plug computers and other slugs as the hub for this I keep coming back to the Arduino. An Arduino has enough CPU power, is cheap, very low power and I can maintain it should it develop […]

FIO (Arduino and XBEE) door, doorbell and others monitor

I have been extending my range of inputs to the CurrentCost, Ardunio, Xport pachube logger. In order to do this I wanted a wireless sensor module. After looking round I chose the FIO, has an XBEE socket and ATMega168, very little else. Can be powered from a rechargeable LiPo battery. The next step was to […]

A TinyXML library for the Arduino

A lot of devices use XML these days – and parsing the XML by hand is quite complex. I use a CurrentCost CC128 power monitor and also Twitter. Both of these have an XML interface.

Over the last couple of months I have been developing a simple XML parser as an Arduino library – it […]