Summary of Hack Wrist Watch LCD With Arduino || D-type LCD || Arduino Digital Watch|| Vishal Soni
This tutorial shows how to hack an old broken digital watch by separating its D-type (7-segment) LCD from the PCB, wiring the display to an Arduino Uno (pins 2–13 and A0–A3), and uploading code that uses PWM patterns (about 10 ms on, 7 ms off) to drive the segments, allowing custom characters to be displayed.
Parts used in the Hack Wrist Watch LCD With Arduino:
- Old school digital wrist watch (with D-type 7-segment LCD)
- Screwdriver (to open watch)
- Thin connecting wires (16 wires)
- Soldering iron and solder
- Arduino Uno
- Rubber strip from the watch display (connector)
- Computer (to upload code)
- USB cable (for Arduino)
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In this tutorial we will hack our old school digital watch which is no longer working now.
So let’s fix the watch Control it’s LCD display which is known as D-type LCD display.
Step 1: Open the Watch
- Take the old school broken digital watch
- open the screws from behind.
- look and understand all part because we goanna close it again.
Step 2: Look at Display
- Apart from PCB we found a display
- this is a 7 segment bashed display.
- A rubber strip with it to connect PCB with display.
Step 3: Connect Wire on PCB and Make a Cut
- Connect wire at the PCB where Display is connected.
- The soldering of wire should be thing because we will close it again.
- make a cut as shown in image to disconnect the it’s controller with LCD.
Step 4: Connect With Arduino
- Connect all the wire with arduino uno.
- The are 16 wire on PCB.
- The 16 wire continuously connected to arduino’s 2nd pin to 13th pin and A0 pin to A3 pin.
Step 5: Upload the Code
- Download the code from link given below.
- There some pattern are forming by giving PWM on pins.
- the PWM is about 10 mili sec on and 7 mili second off.
Github link : – https://github.com/vishalsoniindia/Hack-Digital-W…
Step 6: Done
Wholaaa…………
It’s Done
Now you can print any thing you want.
Source: Hack Wrist Watch LCD With Arduino || D-type LCD || Arduino Digital Watch|| Vishal Soni
- How do I open the watch?
Open the screws from the back of the watch and examine the parts so you can reassemble it later. - What type of display is used in the watch?
The watch uses a D-type 7-segment LCD display. - How do I disconnect the LCD from the watch controller?
Make a cut as shown in the tutorial to disconnect the LCD from its controller on the PCB. - How many wires are needed to connect the display to Arduino?
Sixteen wires are used, connected to Arduino pins 2 through 13 and analog pins A0 through A3. - Where do the 16 wires connect on the Arduino?
Connect the 16 wires continuously to digital pins 2 to 13 and analog pins A0 to A3 on the Arduino Uno. - What code timing is used to drive the LCD?
The PWM pattern used in the code is about 10 milliseconds on and 7 milliseconds off. - Where can I get the code?
The tutorial provides a GitHub link to download the code. - Do I need to solder thin wires to the PCB?
Yes, solder thin wires to the PCB where the display connects; they should be thin so you can close the watch again. - Can I display custom patterns on the watch LCD?
Yes, after connecting to Arduino and uploading the code you can print or display custom patterns.
