ESP32 Industrial PLC: Revolutionizing Industrial Automation with IoT Connectivity

2 Februari 2026

Historical parts record: Photos and notes below belong to this record. Confirm the offered unit’s full model, condition and available test evidence before ordering.

What this delivery is: ESP32-2432S028 development kits — the yellow ESP32 board with a 2.8-inch, 240 by 320 resistive touch TFT built on, each kit boxed with a USB cable, a stylus, a four-wire jumper lead and a clear storage case, all sealed in anti-static bags. Two purchases make up this record: twenty kits received 2026-02-02 and sixteen more received 2026-04-02, thirty-six boards in total, photographed here across both batches. The storage-case labels state the display specification in plain text: 2.8 TFT display, 240(RGB) x 320, with touch, batch 51113.

What the board is

The part number decodes directly: ESP32 for the wireless microcontroller, 2432 for the 2.4-inch-class 240 x 320 resolution, S028 for the 2.8-inch panel variant. At the heart of each board sits a metal-canned ESP-32 module — WiFi and Bluetooth on board, FCC and CE certified, each module carrying its own serial and QR code (XXSR69, XX5R69 and XXQ165 on the three boards photographed closest — separate units, individually serialised). Around the module the yellow board carries the rest of a self-contained HMI node: RST and BOOT buttons, a microSD card slot, both USB-C and Micro-USB ports (power and programming, with the USB-serial chip handling uploads), two white JST four-pin connectors for power and GPIO, a speaker output marked SPEAK, and an RGB LED. The display is a 2.8-inch resistive touch panel, screen printing TPM080-2-B on the touch flex, driven over the same board.

Item	Value on the board / label
Product	ESP32-2432S028 development board kit, 2.8-inch touch TFT
Display	2.8 TFT, 240(RGB) x 320, resistive touch (case label; touch flex TPM080-2-B)
Module	ESP-32, WiFi + Bluetooth, FCC / CE certified, individually serialised with QR
Board features	RST + BOOT buttons, microSD slot, USB-C and Micro-USB, 2x JST 4-pin, SPEAK output, RGB LED
Kit contents	Board in clear storage case, USB-A to USB-C cable, stylus, 4-wire jumper (JST to Dupont)
Batch marking	Case label: 2.8 TFT 240(RGB)x320 with touch, R89, batch 51113
Quantity	20 kits (received 2026-02-02) + 16 kits (received 2026-04-02)
Weight	0.5 kg per the record

Where it fits in industrial work

The listing title talks about industrial automation and IoT, and the honest version is this: the ESP32-2432S028 is not a PLC, but it is the cheap screen-plus-controller node you bolt on next to one. In practice these boards end up as machine-mounted mini HMIs — a 2.8-inch touch panel showing a cell's state, taking a password or a batch selection, and passing it up to the controller; as WiFi-connected sensor nodes that push temperature, count or pressure readings to a broker without any wiring back to the office; and as quick retrofit dashboards where a standalone machine has no display at all. The two USB ports make bring-up simple — flash over USB-C from any laptop, no programmer needed — and the microSD slot holds assets or local logging, so the node keeps its display content even off the network. With both WiFi and Bluetooth on the module, the same board talks to phones for commissioning and to the plant network for data. Thirty-six of them is enough to instrument a floor.