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The question of how to do GET requests with the ENC28J60 arose recently so here is an example. The code assumes some familiarity with the ethershield examples. #include <etherShield.h> static uint8_t mymac[6] = {0×54,0×55,0×58,0×10,0×00,0×28}; ********* aProtocol is essentially a hub polling devices, it does allow for devices to announce events but in the main it is polling. 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 [...] Updated 26/2/2010 I have been extending my range of inputs to the CurrentCost, Ardunio, Xport pachube logger. 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 is [...] This is the current state fo my home monitoring system. I am working on integrating a camera (pictures visible on a web site), sms and email. The code I have been developing for my Current Cost meter updating to Pachube via Arduino with XPORT is ready for sharing. Built to circuit and connected it all up. Bluetacked reed switch to meter and board + cc dev board + 2 AA batteries into small container. CurrentCost meter connect to Pachube via Arduino. In order to try and get some idea of energy usage and comparison with the electricity usage I am logging KW. The calculations [...] When the switch opens the falling edge will cause a negative pulse on the 4013 input. The diode removes that negative pulse. Input to 4013 without diode – one pulse (on/off) – zero volts is the centre line. The signal goes negative to minus 1.44 volts. Positive pulse comes from direct connection to +3 volts, negative [...] |
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