I will write esp32 code for 4x4 keypad with oled display

I will write Arduino/ESP32 code for a 4x4 matrix keypad with OLED display (SSD1306). When you press any key on the keypad, the pressed key will appear on the OLED screen.

WHAT YOU GET:

Basic Package ($5):

- Complete Arduino code (.ino file)

- Reads all 16 keys (0-9, A-D, *, #)

- Displays pressed key on OLED

- Clean, well-commented code

Standard Package ($10):

- Everything in Basic

- Wiring diagram (pin connections)

- Basic documentation (1-page PDF)

- 2 revisions

- 3 days support

Premium Package ($15):

- Everything in Standard

- Full PDF documentation with troubleshooting

- Key history feature (shows last 3-5 keys)

- Custom key mapping (change key layout)

- 3 revisions

- 7 days support

WHAT I NEED FROM YOU:

- Which microcontroller (ESP32, Arduino Uno, Nano, Mega)

- Desired GPIO pins (or use default)

- OLED screen size (128x32 or 128x64)

- Any special requirements

WHY CHOOSE ME:

- Clean, commented code you can understand

- Fast delivery

- Free minor revisions

- Works with real hardware (tested)

Order now and get your keypad working on OLED today!