WT32-SC01 is a thin 3.5-inch ESP32 color touchscreen display

Looking for an ESP32 board with a color touchscreen display? There is plenty of choices here, including Espressif Systems own ESP32-S2-Kaluga-1 multimedia devkit with a 3.2-inch display or M5Stack Core2 with a 2-inch display.

But if you’d like a thinner and larger display, Tag Wireless WT32-SC01 is an ESP32-powered 3.5-inch color display with a 2-point capacitive touchscreen designed to be integrated into your own project or product.

3.5-inch ESP32 Display

WT32-SC01 WiFi display specifications:

  • Wireless Module – ESP32-WROVER-B module based on ESP32-D0WD dual-core processor up to 240 Mhz with 4MB SPI flash, 8MB PSRAM, 2.4GHz WiFi 802.11 b/g/n up to 150 Mbps, and Bluetooth 4.2 LE
  • Display – 3.5-inch 480×320 display (SPI) with 2-pin capacitive touchscreen (I2C)
  • Expansion – 2x 40-pin I/O pads with GPIO, I2C, VN/VP,  I2S, UART, 5V, 3.3V, GND
  • Misc – Reset button (6), power and UART LEDs
  • Power Supply – 5V/1A via USB type-C port for display only, or 5V/2A when expansion connected via expansion pads.
  • Dimensions – 90.87 x 58.01 mm (four 4mm mounting holes)

WT32-SC01 ESP32 WiFi Display

The datasheet further explains there are two 3.3V LDOs, one to power the board itself and the other to power the external extension board in order to prevent the expansion board from interfering with the power supply of the ESP32. The two 40-pin pads are routed to the same pins and placed in such a way to enable portrait or landscape mounting of the display.

ESP32 touchscreen display pinout diagram

There used to be a Github repo (github.com/wireless-tag-cn) but it’s now gone [Update: they simply renamed it. See comments], so the only instructions I could find to get started are on Weixin (in Chinese), and which shows how to build on HMI for the display using http://hmi.8ms.xyz/ which won’t properly load for me either. But they have a video quickly showing the display in action.

I’ve found the ESP32 color touchscreen display on Seeed Studio where it is up for pre-order for $19.99 and currently scheduled to ship on December 15, but Wireless Tag is also selling it on Alibaba for people wanting to purchase in larger quantities. The version on Seeed Studio may be a newer revision (v3.2) and features a black PCB.

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