Automatic up/down control for motorized projector screen
thingiverse
<b>All parts in STL here: https://www.redpah.com/product/4418 </b> Video: https://youtu.be/vZrfDuObePQ 1x Insteon "Open/Close Sensor" 1x Insteon "Open/Close Micromodule" 2x Relay 230VAC or 120VAC like RT114730 1x Microrelay 5VDC like Finder 34.51.7.005.0010 1x USB data/power cable (https://www.amazon.co.uk/gp/product/B001BHVMIU) Operation When I turn the projector ON (or OFF), the micro-relay connected to the USB port closes (or opens) the auxiliary contact of the Insteon "Open/Close Sensor" and sends a short wireless signal to the Insteon "Open/Close Micromodule". This, according to the type of signal received, supplies the line voltage (adjusted with duration of 1 SECOND) to one of the two outputs (UP or DOWN). On each output I connected a micro-relay that closes the rising (or lowering) contact in the control unit for 1 SECOND to raise or lower the screen.
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