SmartCurtains

Leveraging Alexa and a raspberry pi to automate the opening and closing of my apartment's curtains via voice commands

Available Controls

• Open and Close Commands
  • Specify curtain by name (default is all curtains)
  • Specify percentage to move curtain (default is 100%)
• Reset Commands
  • Allow to reset a curtains state (shadow) to either the open or close position

Technology Leveraged

• AWS Alexa
• AWS Lambda
• AWS DynamoDB
• AWS IoT
• Raspberry pi

Materials Used

• Raspberrypi 3B [$30]
• Amazon Dot (3rd version) [$30]
• 2x Stepper motor - NEMA -17 size - 200 steps/rev (12V 350mA) [$15 each]
• Adafruit DC & Stepper Motor HAT for raspberry pi [$22.50]
• Female DC Power adapter - 2.1mm jack to screw terminal block [$8.50]
• 12V DC 1000mA regulated switching power adapter [$8.95]
• 2x Custom 3D Printed motor wall mount [FREE]
• 2x Custom 3D Printed bearing holders [FREE]
• 22 AWG wire [$5]
• 2x bearings with gear teeth [$10]
• 2x teethed pulley [$10]
• 8x set screws [$2]
• 6m teethed timing belt [$15]
• 2x saftey pins
• electrical tape
• screws for mounting
• 8GB SD card [$5]
• Official Raspberry Pi 3 Universal Power Supply (5.1V 2.5A) [$16]

Overall Cost

$170.45 - Clearly well worth it

Overview of Technology Architecture

Overview of Application Architecture

Curtains in Action!