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THIS IS FIRST WORKING PROTOTYPE - WORK IN PROGRESS.
Edit: I have now 2nd version working with different motor driver (12V+) but there is no time to edit this listing :-(
This is my remix of cabuu's Automatic blinds automation (thanks!). Reworked for Wemos D1 Mini and European blinds (in the Czech Republic we use different chain type). This type of blinds have only one chain for both functions (tilt and raise). Short rotation will tilt blinds and long rotation will raise blinds. The position of controller was changed due to the limited space next to the window. It allowed me to add stop switch for precise calibration. Use 9-11V power source.
This automatic blinds control needs straight chain (without chain connector). So you have to remove connector, remove ~5 balls from each end of chain, made a knot and seal it with super glue. Glued knot is roughly as large as the chain ball. If you have spare chain from some old blinds, you can even extend existing chain with it. Motor Driver (L298N) is suitable for 8-11V power source. One of mine can be used with 12V but others can not. If you want to use 12V+ power source you need different motor driver (I have a 2nd version ready, no time to update it here).
High torque motor can lift heavy metal blinds for small price (big window takes ~50 seconds). Wemos is connected to wifi network and can be controlled over HTTP requests. Buttons was removed (only HTTP remote control is supported for now).
This is my first Arduino project - code is fully working but should be reworked. DHCP client is enabled, edit wifi SSID details. Commands available (for IFTTT or other home automation system): http://IP_ADDRESS/up (fully up, timer is used, needs to be tweaked in code) http://IP_ADDRESS/down (fully down to stop switch) http://IP_ADDRESS/open (fully down to stop switch and rotate blinds to open position) http://IP_ADDRESS/close (fully down to stop switch and rotate blinds to close position) http://IP_ADDRESS (some status information)
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