Why?

The NOI Makerspace has an internal access management system (Based on Fabman), with little nfc boxes that unlock the machines.
The machines are located in 4 different workshops, so if a user wants to enter one, they have to get the key from the employees. With a growing userbase, verifying if a user is allowed to use it and letting those enter, that are allowed to enter outside of business hours, becomes a problem. Additionally, counting the hours of use of a workshop, if the user only uses manual tools isn't possible.

Thats what the Keydispenser is designed to solve.

What does it do?

The Keydispenser basically does what the name implies: dispense the requested workshop key, only if a user has the required permission, and saving it into the access management system.
It also lets a user return a dispensed key, also saving it's return.

Things I used

• Raspberry Pi
• Stepper motor
• Stepper Driver (with software current control)
• Hall sensor
• NFC module
• Neopixel LED's
• IR LED and detector
• Servo motor