Watchwinder

Watch winder for mechanical watches with three slots.

This is a watch winder/ "Uhrenbeweger" project. The watch winder itself is able to wind 3 watches. The amount of turns per day, aswell as the desired time of day, can be set within the user interface.

Parts

1. Arduino Uno
2. DS3231 real time clock
3. 3 Servos //TODO add name of servo/ serial number
4. 1.77 inch SPI TFT Display 128x160 pixel
5. 3 MOSFETs //TODO add some info
6. All printed parts needed
7. M2 threaded inserts and M2 screws

3D-Printing

All required parts are printed in PLA with 20% infill and without supports. This makes the printing process very reliable, even on older machines. All threaded inserts must be inserted with considerable heat. I recommend using a soldering iron set to 250-300°C and some gentle pressure.

Connection Information

RTC (Real Time Clock)

• 3.3V
• GND
• SDA to analog 4
• SCL analog 5
• SQW/INT to pin 2

1.77" Display

• 5V
• GND
• MISO to pin 12
• SCK to pin 13
• MOSI to pin 11
• LCD CS to pin 10
• SD CS to pin 4
• D/C to pin 9
• BL to +5V

Servos

• //TODO

Interface

• //TODO

Libraries

// TODO The following libraries need to be downloaded. This can be done within the Arduino IDE:

• TFT
• Adafruit RTC Library
• Adafruit GFX Library
• Adafruit ST7735 Library
• Low-Power (by Rocket Scream Electronics)
• SPI (arduino avr core)

Loading the Firmware

The build process is as follows:

After making sure, that you have the Arduino IDE installed, you need to download the needed Libraries from within the IDE. After that, connect the Arduino to your PC, install the necessary drivers if it didn't happen automatically, and select the USB Port the Arduino is connected to. Now open the main.ino and click upload in the top left corner. You have now completed the Firmware step.

Note: You will need to download the main folder and either open the folder itself or open the main.ino from within the folder.