Automatic up/down control for motorized projector screen
thingiverse
All parts listed below can be found here: https://www.redpah.com/product/4418 Video tutorial available at https://youtu.be/vZrfDuObePQ. Components needed: 1x Insteon "Open/Close Sensor" 1x Insteon "Open/Close Micromodule" 2x Relays, 230VAC or 120VAC, similar to RT114730 1x Microrelay, 5VDC, identical to Finder 34.51.7.005.0010 1x USB data/power cable (available at https://www.amazon.co.uk/gp/product/B001BHVMIU) Operation: Upon turning the projector ON or OFF, a micro-relay connected to the USB port closes or opens an auxiliary contact on the Insteon "Open/Close Sensor", transmitting a brief wireless signal to the Insteon "Open/Close Micromodule". This device responds by supplying line voltage (duration adjusted to 1 SECOND) to one of two outputs, UP or DOWN. Each output is connected to a micro-relay that closes its rising contact in the control unit for 1 SECOND, causing the screen to rise or lower.
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