CM_ESP_P4_C5 Open Hardware Edge Vision Platform

Open hardware dev kit for edge vision and HMI. ESP32-P4 SOM for compute. ESP32-C5 module for Wi-Fi 6 dual band 2.4 and 5 GHz Bluetooth 5 LE Thread and Zigbee. Shared Camemake camera module pinout. MIPI CSI camera in. MIPI DSI display out. Ethernet USB SD I²S audio. All design files public. Production modules sold.

Live 3D hardware view

What this is

CM_ESP_P4_C5 is an open hardware edge vision platform based on Espressif ESP32-P4 and ESP32-C5.
It targets embedded camera systems, human machine interface panels, industrial control, robotics control heads and smart gateways.

The kit exposes:

• CM_P4-A1-N16R32 ESP32-P4 system on module
• CM_ESP32-C5-WROOM-1-N8R8 ESP32-C5 Wi-Fi 6 wireless module
• Standard Camemake camera module connector with fixed pinout
• MIPI CSI camera input and DVP or SPI sensor input
• MIPI DSI and RGB parallel display output for HMI
• RMII Ethernet 10/100, USB 2.0 HS OTG and Full Speed OTG
• SD card, I²S audio, CAN TWAI, GPIO expansion
• Full schematic, PCB, BOM, mechanical and firmware

This platform is meant for:

• Vision nodes with display
• Local AI style preprocessing using ISP and H.264 encoder inside ESP32-P4
• Wi-Fi 6 or Thread or Zigbee connected control panels
• Rapid product bring up with ready enclosure data and production modules

This platform combines:

• A high-performance ESP32-P4 SOM (CM_P4-A1-N16R32)
• A dual-band Wi-Fi 6 ESP32-C5 module (CM_ESP32-C5-WROOM-1-N8R8)
• A stable camera/display carrier board with Ethernet, USB, audio, SD, and expansion
• A standardized Camemake camera module pinout that repeats across development kits

Everything in this repo is published so you can build your own product.
You can also buy production-grade modules directly.

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1. Key points

• Open hardware dev kit: CM_ESP_P4_C5
• Main compute: ESP32-P4 SOM with dual-core 32-bit RISC-V up to 360 MHz, 16 MB Flash, 32 MB PSRAM
• Connectivity module: ESP32-C5 with dual-band Wi-Fi 6 (2.4/5 GHz), Bluetooth 5 LE, Thread / Zigbee (802.15.4), 8 MB Flash, 8 MB PSRAM
• Camera pipeline: MIPI CSI and DVP/SPI camera support, shared Camemake camera connector pinout
• Display pipeline: MIPI DSI and parallel display connector
• Networking: RMII Ethernet PHY, USB 2.0 HS/FS OTG, SD card
• Audio path: I²S codec and amplifier hooks
• Industrial temperature range hardware
• Full CAD, firmware, and manufacturing data provided

This platform is both:

1. A reference design you can copy.
2. A production-ready module ecosystem you can buy.

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2. Block diagram (functional roles)

CM_P4-A1-N16R32 (ESP32-P4 SOM)

• Dual-core RISC-V application processor up to 360 MHz
• Low-power controller for always-on wake and housekeeping
• 16 MB Flash + 32 MB PSRAM on-module
• High-speed multimedia engines (ISP, JPEG codec, H.264 encoder, pixel pipeline)
• Interfaces broken out on the SOM:
  • MIPI CSI-2 camera
  • MIPI DSI display
  • Parallel camera / parallel RGB display
  • USB 2.0 OTG HS/FS
  • RMII Ethernet MAC
  • CAN / TWAI
  • I²S audio
  • I²C / I3C / SPI / UART / SDIO / GPIO / ADC / touch

CM_ESP32-C5-WROOM-1-N8R8 (ESP32-C5 module)

• Single-core 32-bit RISC-V up to 240 MHz
• Dual-band Wi-Fi 6 (2.4 GHz and 5 GHz)
• Bluetooth 5 LE
• Thread / Zigbee via 802.15.4
• 8 MB Flash + 8 MB PSRAM
• Used as a wireless / network / application coprocessor

Carrier board (CM_ESP_P4_C5 baseboard)

• High-speed camera connector
• High-speed display connector
• Gigabit-capable PHY footprint for Ethernet RMII (10/100 mode)
• USB connectors (data + power + debug)
• SD card slot
• I²S audio codec + amplifier drive path
• User buttons, status LED, accessible UART0, USB Serial/JTAG
• Power regulation: 5 V in → 3.3 V rails, local LDO rails for camera/display bias and logic

ESP32-P4NRW32 (bare MCU option)

• ESP32-P4 silicon with integrated 32 MB PSRAM in-package
• Dual-core high-performance domain + always-on low-power domain
• Same multimedia and interface set as exposed on the SOM
• Sold standalone for teams who want to design their own SOM instead of buying CM_P4-A1-N16R32

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3. Camemake camera module ecosystem

The CM_ESP_P4_C5 dev kit is camera-first.

• The camera connector is defined and frozen.
• The same pinout is reused across Camemake development kits.
• This lets you:
  • Swap camera modules without rewiring
  • Reuse camera firmware, drivers, and I2C control code
  • Scale from prototype to product with minimal PCB change

Supported camera interface modes:

• MIPI CSI-2 (for higher bandwidth sensors)
• DVP / parallel 8-bit and SPI camera modules (for lower cost sensors with onboard compression/encoder)

This repo will include:

• Camera connector pinout
• Power rails for 1.2 V / 1.8 V / 2.8 V image sensor domains
• Example init sequences (I2C/TWI)
• Capture path demo (sensor → ISP/H.264 → stream/store)

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4. Display and HMI path

The baseboard exposes:

• MIPI DSI high-speed lane pair for modern LCD panels
• Parallel/RGB interface for lower-cost LCDs
• Touch panel interrupt and reset lines
• Backlight enable and brightness control
• Orientation (UPDN / SHLR) control

Firmware examples will include:

• Camera preview to display
• Simple UI / menu render
• Touch reading and event handling

This makes CM_ESP_P4_C5 usable as a human-machine interface panel or smart control head.

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5. Networking and I/O

Ethernet

• RMII interface to external PHY
• RJ45 with magnetics
• PHY reset, MDC/MDIO, activity LEDs
• 10/100 operation for industrial control and wired gateways

USB

• High-speed USB 2.0 OTG from ESP32-P4 SOM
• Secondary USB port wired to CP2102N bridge for debug UART, auto-program, boot control
• USB power distribution and overcurrent switching

Wireless

• Handled by ESP32-C5 module
• Dual-band Wi-Fi 6
• BLE 5 LE
• Thread / Zigbee for Matter-class devices

Storage

• SD card slot (SDIO)
• 16 MB Flash + 32 MB PSRAM on SOM for app/runtime data
• 8 MB Flash + 8 MB PSRAM on ESP32-C5 module

Audio

• I²S codec path with mic in and speaker out
• Power amp enable line
• Ready for voice input, alerts, UI sounds

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6. Hardware deliverables in this repo

You get full manufacturing data.

• Schematics (PDF and source)
• PCB layout files
• IPC-class PCB stackup and impedance spec
• BOM with part numbers
• Mechanical files (STEP, DXF)
• Pinout drawings for:
  • CM_P4-A1-N16R32 SOM
  • CM_ESP32-C5-WROOM-1-N8R8 module
  • Camera connector
  • Display connector
  • Expansion headers
• Power tree and rail notes
• Reflow guidance

This is meant to let you spin your own carrier, not just blink LEDs.

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7. Live hardware view (3D board)

A live, interactive 3D view of the CM_ESP_P4_C5 board is available here:

https://www.camemaker.com/cm-esp-p4-c5-open-hardware-edge-vision-platform

That page embeds the Altium 365 viewer so you can inspect the full assembly, component placement, and mechanical envelope in the browser.