Reply to "Optical Chuff Detection for TMCC upgrades"

Norm CharbonneauOGR Forum Member DIGITAL SUBSCRIBER

I spent a bit more time experimenting with the RPR-220 but decided to install one of John’s CGs. I am using one of his nice little 5V power supplies (no smoke so no Super Chuffer to get 5V from). I was able to mount the power supply on the tailbeam and had a nice unused smoke switch location for the cal switch, accessible below the flywheel:

I used the ground light output of the CG in the cab by the engineer so he can check his OGR posts before heading out. This is an 0402 LED, the one above the backhead is always on with track power:

Here’s a quick little vid:

I may revisit the RPR-220 on another project. I found I could actually trigger the chuff from a striped axle but need a reliable mount that would allow me to adjust the sensor’s position for best response.

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