Portable IoT Display

This instructables show how to use a 2 inches LCD and ESP32 to make a portable IoT Display.

TTGO T7 V1.0

https://www.aliexpress.com/item/32998388114.html

2 inches IPS LCD

https://www.aliexpress.com/item/32949052390.html

402035 Lipo

https://www.aliexpress.com/wholesale?SearchText=40...

D-Ring Locking Carabiner Clip Keychain

https://www.aliexpress.com/item/33041850599.html

Please download and print the case at thingiverse:

https://www.thingiverse.com/thing:4564272

Follow the LCD datasheet connect the pins. Please read through the datasheet before connection especially if you are not ordered same LCD model.

Here are the connection summary:

ESP32   -> LCD
GND     -> Pin  1 GND
        -> Pin  2 LED K
3v3.    -> Pin  4 Vcc -> 20 Ohm -> Pin 3 LEDA
GPIO 27 -> Pin  7 D/C
GPIO  5 -> Pin  8 CS
GPIO 18 -> Pin  9 SCK
GPIO 23 -> Pin 10 MOSI
GPIO 33 -> Pin 11 RST

Use some tapes to seal the soldered wires and exposed pins.

Please follow the video to assembly.

Arduino IDE

Download and install Arduino IDE if you are not yet do it:

https://www.arduino.cc/en/main/software

ESP32 Support

Follow the Installation Instructions to add ESP32 support if you re not yet do it:

https://github.com/espressif/arduino-esp32

Arduino_GFX Library

Download latest Arduino_GFX libraries: (press "Clone or Download" -> "Download ZIP")

https://github.com/moononournation/Arduino_GFX

Import libraries in Arduino IDE. (Arduino IDE "Sketch" Menu -> "Include Library" -> "Add .ZIP Library" -> select downloaded ZIP file)

Compile & Upload

1. Connect the device with USB cable
2. Open Arduino IDE
3. Open ESPWiFiAnalyzer sample code ("File" -> "Example" -> "Arduino_GFX" -> "ESPWiFiAnalyzer")
4. Press Arduino IDE "Upload" button

This 2 inches IoT display not only a simple ESP WiFi Analyzer, ESP32 have much more possibilities. It's time to use your imagination to develop your unique IoT device!