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
- CPU
- 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
- Main SoC – Espressif Systems ESP32-P4
- 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-
- Â 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.
Debashis Das is a technical content writer and embedded engineer with over five years of experience in the industry. With expertise in Embedded C, PCB Design, and SEO optimization, he effectively blends difficult technical topics with clear communication
Support CNX Software! Donate via cryptocurrencies, become a Patron on Patreon, or purchase goods on Amazon or Aliexpress. We also use affiliate links in articles to earn commissions if you make a purchase after clicking on those links.
