Wyvern Posted October 31, 2020 Share Posted October 31, 2020 Not sure if this is a bit of a gimmick project but decided to do it after I found a couple of leaves in the telescope after a night's imaging session which had left marks on the lens. it was a fun build though.Parts needed:3D printer or the ability to have parts printedNema 11 stepper with 5:1 planetary gearboxArduino8825 Strpper controller.100uf CapacitorCableMotor HousingLens coverassembledThe code for the arduino lives here https://github.com/wyvernp/Auto_lens_cover/tree/mainWiring diagram (credit https://www.instructables.com/Controll-a-Stepper-Motor-With-the-DRV8825/ )To connect to the stepper from a windows PC launch powershell and use the following commands (substituting the correct com port)$port= new-Object System.IO.Ports.SerialPort COM6,9600,None,8,one$port.open()$port.Write("c")$port.Close()I have created a basic VB.net app for opening and closing the lens caphttps://od.lk/d/NjJfMTk0NTg1MTdf/AstroUI.zipSend o to open the cap and c to close.And the finished result.Wyvern 6 Quote Link to comment Share on other sites More sharing options...
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