2 layers100 × 50 mm
2 layers105.4 × 67.6 mm
Carpc
festlv/carpc55RaspberryPi based CarPC build, to replace stock Volvo navigation system
- Size
- 105.4 × 67.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 51
- Nets
- 43
- Pads
- 160
- Tracks, vias
- 304, 4
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 3
- Created
- 2 Jun 2013
- Updated
- 9 Sep 2014
Overview
Carpc is an open-source printed circuit board by festlv, from the festlv/carpc repository on GitHub. It is a 2-layer board of 105.4 × 67.6 mm with 51 parts on 43 nets, routed with 304 tracks and 4 vias.
It is built around the ATMEGA328-PU, MCP2551-I/P and MCP2515-I, with the BC547 among its other parts. Its parts include 14 resistors, 12 capacitors, 5 connectors, 4 ICs and 4 diodes. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
4
ATMEGA328-PU
PDIP-28-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH PDIP-28 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
MCP2551-I/P
PDIP-8-40℃~+85℃ 1Mbps 365uA 4.5V~5.5V 75mA CAN Transceiver PDIP-8 CAN Transceivers ROHSMicrochip TechnologyCAN Transceivers
MCP2515-I
TSSOP-20-40℃~+85℃ 1Mbps 1uA 2.7V~5.5V 5mA CAN Controller SPI TSSOP-20 CAN Controllers ROHSTokmasCAN Controllers
BC547
TO-92Bipolar (BJT)Jiangsu Changjing Electronics Technology (CJ)
README
README.mdRaspberryPi based CarPC.
This repository hosts firmware and software for my RaspberryPi based CarPC build.
-
avr-firmware/ contains firmware which is running on Atmega 328p microcontroller. It requires avr-gcc, avr-binutils and scons. Sample usage:
scons uploadFlashes the microcontroller (assumes usbasp programmer connected).
-
linux_software/ folder contains userspace driver which passes keypresses from serial port to uinput. Requires python2.7, pyserial and evdev Sample usage:
bash virtualenv .env source .env/bin/activate pip install -r requirements.txt python driver.py /dev/ttyAMA0Runs the input driver which expects that microcontroller is connected to /dev/ttyAMA0 (serial port on RasPi).
-
hardware/ contains schematics and PCB layout drawn in KiCad.
For more information, please see: http://wot.lv/category/rpi-carpc.html
------------------------------------------------------------------------------
Copyright (c) 2013 Reinis Veips.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the distribution.
3. The names of the authors may not be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,Parts
51| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 100R | R3 | R2, R3, R4, R16, R17 |
| 4 | 0.1uF | C1 | C2, C4, C9, C10 |
| 4 | 22pF | C1 | C5, C6, C7, C8 |
| 4 | P*** | 1pin | 1PIN, 1PIN, 1PIN, 1PIN |
| 3 | 1K | R3 | R5, R13, R14 |
| 3 | DIODE | D5 | D1, D3, D4 |
| 2 | 100uF | C2V10 | C1, C3 |
| 2 | 4K7 | R3 | R11, R12 |
| 2 | 560pF | C1 | C11, C12 |
| 2 | 5K | R3 | R1, R9 |
| 2 | BC547 | TO92-EBC | Q1, Q3 |
| 2 | CRYSTAL | XTAL | X1, X2 |
| 1 | 10K | R3 | R10 |
| 1 | 4k7 | R3 | R15 |
| 1 | 7805 | LM78XXV | U1 |
| 1 | ATMEGA328-P | DIP-28__300_ELL | IC1 |
| 1 | CANBus | PIN_ARRAY_3X1 | K3 |
| 1 | CONN_4 | PIN_ARRAY_4x1 | P3 |
| 1 | DPST | SW_PUSH_SMALL | SW1 |
| 1 | FUSE | C2 | F1 |
| 1 | LED | LED-3MM | D2 |
| 1 | MCP2515 | DIP-18__300_ELL | U2 |
| 1 | MCP2551 | DIP-8__300_ELL | U3 |
| 1 | MELBUS | PIN_ARRAY_4x1 | P2 |
| 1 | PWR_IN | SCREW_TERM_2 | P1 |
| 1 | RELAY | FINDER_RELAY | Q2 |
| 1 | RELAY_OUT | SCREW_TERM_3 | P5 |
| 1 | RTI | PIN_ARRAY_2X1 | P4 |
Questions
How big is the Carpc PCB?
It measures 105.4 × 67.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Carpc use?
51 parts, built around the ATMEGA328-PU, MCP2551-I/P, MCP2515-I and BC547. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Carpc KiCad files?
From the festlv/carpc repository on GitHub, at the commit this page was made from: the board is hardware/carpc.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Carpc design in my own project?
Its repository states no licence, so its author keeps all rights: ask festlv before reusing the design.
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