Compact development board features a single ESP32-P4 + ESP32-C5 dual-band Wi-Fi 6 module, MIPI display and camera interfaces

Just a few months back, Wireless-Tag released the WT99P4C5-S1, which combines the ESP32-P4 with an ESP32-C5 dual-band WiFi 6 module, instead of the more commonly used ESP32-C6 wireless module found on most ESP32-P4 development boards we’ve covered. The company has now released the WTDKP4C5-S1, a more compact development board built around the WT01P4C5-S1 ESP32-P4 and ESP32-C5 core module.

The board supports MIPI-CSI and MIPI-DSI through the ESP32-P4, while the SDIO-connected ESP32-C5 provides dual-band Wi-Fi 6 (2.4/5 GHz) connectivity along with BLE 5, Zigbee, Thread, and Matter. Other features include a USB 2.0 Type-C OTG port, two UART debug interfaces, two 40-pin GPIO breakouts from both chips, and various power options via USB-C, a 12V DC input, or headers. The board is suitable for LVGL-based HMIs, data acquisition, industrial control, and Edge AI applications such as IPCs and smart displays.

Wireless Tag WTDKP4C5-S1 specifications:

• Core module – Wireless Tag WT01P4C5-S1
  • Main SoC – Espressif Systems ESP32-P4
    • CPU
      • Dual-core 32-bit RISC-V HP (High-performance) CPU @ up to 400 MHz with AI instructions extension and single-precision FPU
      • Single-RISC-V LP (Low-power) MCU core @ up to 40 MHz with 8KB of zero-wait TCM RAM
    • Memory
      • 768 KB HP L2MEM (for dual-core CPU), 32 KB LP SRAM, 8 KB TCM (for LP MCU core)
      • 16MB or 32MB PSRAM
    • Storage – 128 KB HP ROM, 16 KB LP ROM
    • GPU – 2D Pixel Processing Accelerator (PPA)
    • VPU – H.264 video encoder, JPEG codec
    • ISP – Integrated Image Signal Processor
  • Storage – 16MB external SPI NOR flash inside the module
  • Wireless SoC – ESP32-C5
    • CPU – Dual-core 32-bit RISC-V CPU @ up to 240 MHz
    • Memory – 384 KB SRAM
    • Storage – 320 KB ROM
    • Wireless – Dual-band 802.11ax WiFi 6, Bluetooth 5.0 LE, and 802.15.4 (Zigbee 3.0 and Thread 1.3)
  • Interconnect – ESP32-P4 ↔ ESP32-C5 connected via SDIO
  • Dimensions – 35 × 35 mm
• Display I/F
  • MIPI DSI connector for display (2-lane, 1.5 Gbps per lane via 15-pin, 1.0 mm pitch FPC connector)
  • RGB displays via GPIO
  • Display size – Up to 7-inch
• Camera I/F – MIPI CSI connector (2-lane, 1.5 Gbps per lane via 22-pin, 0.5 mm pitch FPC connector)
• Audio – I²S and PDM interfaces with external DACs via P4 GPIO-
•  Networking
  • Wireless – Dual-band WiFi 6, Bluetooth 5.0 LE, and 802.15.4 (Zigbee 3.0 and Thread 1.3) via ESP32-C5
  • Wired – RMII signals (Ethernet) exposed via headers (External PHY required)
• USB – USB Type-C port connected to ESP32-P4
• Expansion – 2x 40-pin GPIO headers for ESP32-P4/C5 (58x GPIOs in total)
  • ESP32-P4 – 46x GPIOs
  • ESP32-C5 – 12x GPIOs
  • Supports SPI, I2C, UART, ADC, DAC…
• Debugging
  • ESP32-P4 UART debug interface
  • ESP32-C5 UART debug interface
• Misc
  • Boot button for firmware download mode
  • Reset (EN) button
  • Power control pin for core module shutdown
  • RTC with 2-pin battery connector
• Power Management
  • 5V input via USB Type-C
  • 12V via DC jack
  • 5V via header
• Dimensions – 80 x 60 mm

Software-wise, the WTDKP4C5-S1 is supported by the ESP-IDF v5.5 framework, with a complete reference project and BSP available on the company’s GitHub. The ESP32-P4 runs the main application stack, while Wi-Fi and BLE are handled by the ESP32-C5 over SDIO using Espressif’s ESP-Hosted and esp_wifi_remote components. The software stack includes ESP-Brookesia and LVGL for the UI, esp_lcd and esp_cam for MIPI-DSI displays and MIPI-CSI cameras, esp_video and audio libraries for media playback, and ESP-DL for on-device AI inference, with fixed component versions to ensure compatibility. More information is available on the Wiki. There’s nothing about other frameworks in the documentation, but the ESP32-P4 and ESP32-C5 are also supported by the Arduino IDE and the latest MicroPython v1.27 release.

The Wireless Tag WTDKP4C5-S1 is available on AliExpress for $18.73 and up and on the Wireless Tag Store for $13.90. You can add an OV5647 camera sensor and/or a 7-inch display to your order to get a complete system for about $42. More information about the WT01P4C5-S1 module is available on its product page.

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