Raspberry Pi Custom Carrier Board Design
Publicada el 2026-07-23
Descripción de la oferta
Custom Carrier Board Design (CM4 + ESP32-S3)2 3Project Overview4 5Looking for an experienced hardware designer to develop a custom KiCad carrier board for a battery-powered embedded system.6 7A working prototype already exists. The architecture, component selection and functional requirements are already defined.8 9The goal is to create a robust and production-oriented carrier board with high reliability and resistance to vibration and mechanical shocks.10 11Main Components12 13- Raspberry Pi Compute Module 4 (4GB RAM, 16GB eMMC, WiFi/Bluetooth)14- ESP32-S3-WROOM-1U with external U.FL/IPEX antenna15- 2x MPR121 Capacitive Touch Controllers16- VS1053 Audio Codec17- MAX9744 Class-D Audio Amplifier18- PN532 NFC Reader19- INA226 Power Monitor20- DS3231 RTC21- SN74AHCT125 Level Shifter22- Pololu #2811 Power Switch23- Pololu #2866 (5V 9A Buck Converter)24- 12V Addressable RGB LED Modules25- Cooling Fan26- Buzzer27 28Power System29 30- 3S Li-Ion Battery Pack31- 11.1V nominal32- 12.6V maximum33- Integrated BMS34- Detachable battery system35- Main fuse36- TVS surge protection37- Low-ESR bulk capacitors38- 5V / 9A buck regulator39 40Interfaces41 42UART43- CM4 to ESP32-S344 45I2C46- MPR12147- INA22648- DS323149 50SPI51- VS105352 53GPIO54- RGB LED control55- Power management56- Amplifier shutdown57- Status signals58 59External Connections60 61The display is external to the enclosure.62 63The carrier board must provide connections for:64 65- HDMI output to external 7-inch display66- USB connection for touchscreen input67- USB-C programming/debug port for ESP3268 69Mechanical Requirements70 71The device will operate in a high-vibration environment.72 73Requirements:74 75- Robust locking connectors76- JST-XH, JST-GH, MicroFit or equivalent77- Mounting holes for vibration isolators78- Support for shielded wiring used by capacitive touch sensors79 80PCB Requirements81 82Preferred:83 84- 4-layer PCB85- Dedicated ground plane86- Production-oriented design87 88Special attention required for:89 90- Power distribution91- High-current routing92- Grounding strategy93- EMI reduction94- Audio noise prevention95- Capacitive touch noise immunity96- Thermal management97 98Deliverables99 100- Schematic101- PCB Layout102- KiCad source files103- Gerber files104- BOM105- Pick and Place files106- Assembly drawings107- PDF documentation108 109Required Experience110 111Please provide:112 113- KiCad experience114- Previous CM4 projects115- Previous ESP32 projects116- Examples of completed PCB designs117 118Experience with battery-powered, mixed-signal, industrial or rugged embedded systems is highly appreciated.119 120Additional Information121 122Complete architecture documentation, wiring details, pin mapping, block diagrams and functional requirements will be provided.123 124This is not a proof-of-concept project. The objective is to convert an existing validated prototype into a reliable field-deployable embedded platform.
Skills
Fuente original: freelancer