TFT32 – IoT gateway/control hub with TFT

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The TFT32 project is an ESP32 powered multi-purpose IoT gateway/control hub with TFT, touch and various other helper peripherals.

: Powered board

: Front of PCB

: Back of PCB

: Top view

Features

Powered by the popular ESP32 SoC
ILI9341 based 2.4″ TFT with resistive touch, PWM dimming control
Light sensor (LDR)
433Mhz RFM69HW ISM radio
One WS2812B RGB LED (Neopixel)
Piezo buzzer for audible feedback
HTU21D/SHT21 temperature/humidity sensor
DS1338 real-time clock with battery backup (CR1220 battery not included)
Four multi-purpose buttons
Option for ATSHA204 crypto authentication device (not included)

Logical peripherals diagram

Schematic

Powering it

The TFT32 can be powered from the micro USB port or the FTDI programming socket (P1). Alternatively, the board can be powered from 12-6V source using the auxiliary power connector (P4).

Programming it

The micro-USB port is only used to provide power, not for programming the TFT32. The TFT32 is programmed using FTDI programming socked located on the back of the product. To program the TFT, please use 3.3V logic level FTDI programmer that can supply at least 500mA current.

: FTDI connector

: Arduino settings

Note: In order to flash the TFT32 with new firmware, you need to press and hold button 1 (marked with S1 on the silk, connected to GPIO 0) for a short time as the firmware upload starts

Code examples

Github repository with examples: here

I highly recommend using LittlevGL for GUI development on the TFT32.

LittlevGL is a free and open-source graphics library providing everything you need to create embedded GUI with easy-to-use graphical elements, beautiful visual effects, and low memory footprint.

Example Arduino source code for touchscreen Christmas lights controller with MQTT backend is available to get you started with LittlevGL and the TFT32 on my Github repo.

Christmas lights controller

3D printable enclosure

A 3D printable enclosure is available for free here.

: 3D enclosure

: 3D enclosure front

: 3D enclosure back

Note: The enclosure requires four 2.5x7mm screws.

Buy TFT32

You can purchase the TFT32 project from my store:

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Oscar perez

Arquitecto especialista en gestion de proyectos si necesitas desarrollar algun proyecto en Bogota contactame en el 3006825874 o visita mi pagina en www.arquitectobogota.tk

TFT32 – IoT gateway/control hub with TFT