Elster A100C IrDA photodiode and/or pulse photodiode holder

thingiverse

A bracket for holding an IrDA photodiode and/or photodiode for pulse counting against an Elster A100C electricity meter. The Elster A100C will output the watts/hr metered as an Infra-red serial bit stream. This can be read with typically, something like a TSL261R photodiode. It will also output a visible pulse for every watt/hr metered. So you have the choice, you can either count the visible pulses, or simply read the meter. Either way, you need a bracket to hold the photo-diodes. This thing does that. Instructions You have the choice of either the IrDA photodiode bracket (on the left) or the pulse counting photodiode (on the right). In the .scad file... / You can have two photodiode brackets/ do_pulse=0; // zero to disable the bracket do_reader=1; // 1 to enable the bracket If your meter is placed somewhere where the sun can shine on it, you WILL need to make it out of an opaque material. I used "Natural" PLA - as shown in photograph. Sunlight is diffusing through the material and upsetting the IrDA photo-diode. I had to add an opaque barrier to left-hand side - the IrDA photodiode.