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 [...]
| ||||||
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,[...] Here is the final circuit I will use,the resistor and capacitor values give a time constant of about 0.5 sec –I’m sure many other values would work but I have these ones in my box. I have added a pull down resistor on the reset line just to make sure it is low [...] This is the CurrentCost development board. Note the 10 pin programming header –the leftmost pins are at 0V the rightmost at the positive supply voltage. I have attached a wire to the anode of the led. This is my gas meter –there is a cut out at the bottom right of the [...] @MartinDix from CurrentCost kindly sent me a dev board so I could interface other feeds to the CurrentCost meter. After some experimentation this is the circuit I intend to use. I have not yet fully finalised values of components but it seems to work pretty well on the breadboard. Note my dev board is version [...] |       | |||||
| Copyright ©2012 John's Ramblings - All Rights Reserved | ||||||