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This is a portable IoT display project, which can be developed into various practical tools based on it and the Arduino_GFX library. For example, WiFi signal analysis, electronic photo albums, etc. With a well-designed 3D printed case, it can be easily hung on a keychain or backpack for portability.
Material List
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TTGO T7 V1.0 (ESP32 WiFi Module) × 1
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402035 Lipo Lithium Battery × 1
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D-shaped climbing buckle × 1
3D Printed Case
You can choose to download the 3D printing files at the end of the article to print the case.
You can also choose to download directly from thingiverse:https://www.thingiverse.com/thing:4564272
Soldering Circuit Part
Refer to the LCD’s Datasheet to connect the pins. Be sure to read the Datasheet thoroughly before connecting, especially if the LCD model you ordered differs from the one here.
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
Assembly
Seal the soldered parts and exposed pins with tape.
Refer to the video below to assemble the module and the case.
Programming
Arduino IDE
If you have not installed the Arduino IDE before, you need to download and install it:https://www.arduino.cc/en/main/software
ESP32 Support
Follow the instructions in the link below to install ESP32 support:https://github.com/espressif/arduino-esp32
Arduino_GFX Library
Download the latest version of the Arduino_GFX library: (“Clone or Download” -> “Download ZIP”)https://github.com/moononournation/Arduino_GFX
Import this library in the Arduino IDE. (Arduino IDE “Sketch” Menu -> “Include Library” -> “Add .ZIP Library” -> Select the downloaded zip file)
Compile and Upload
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Connect with a USB cable to your computer, open the Arduino IDE.
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Open the ESPWiFiAnalyzer example code (“File” -> “Example” -> “Arduino_GFX” -> “ESPWiFiAnalyzer”)
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Click the Arduino IDE “Upload” button.
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The ESPWiFiAnalyzer.ino code file is also available for download at the end.
Completion
This 2-inch IoT display can not only be used for WiFi signal detection analysis, but the ESP32 also has many more possibilities. It’s time to unleash your imagination to make it more fun!
Original link: https://www.instructables.com/Portable-IoT-Display/
Original author: Chen Liang
The translation was first published on: Fun Unlimited
Editor: DF Maker Community
If anyone has anything to say, feel free toleave a message!
All related files for the project can be clicked onto read the original textto obtain.
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