2 layers104 × 66 mm
Vallox rs485-controller
Miroeilola/vallox-rs485-controller
Replacement control panel for legacy Vallox SE ventilation units. Vallox DIGIT RS-485 protocol, bus-powered, ESP32, Home Assistant.
65 parts
2 layers52 × 36 mm
CyphalPicoBase CAN
generationmake/CyphalPicoBase-CAN5Board for the Raspberry Pi Pico to connect via CAN using OpenCyphal and UCANPHY Micro
- Size
- 52 × 36 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 62
- Nets
- 70
- Pads
- 268
- Tracks, vias
- 592, 62
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 5 Jun 2022
- Updated
- 10 Dec 2023
Overview
CyphalPicoBase CAN is an open-source printed circuit board by generationmake, from the generationmake/CyphalPicoBase-CAN repository on GitHub, published under the CERN-OHL-W-2.0 licence. It is a 2-layer board of 52 × 36 mm with 62 parts on 70 nets, routed with 592 tracks and 62 vias.
It is built around the SN65HVD230D, M24C64-RMN6TP and MCP2515T-I/SO-HX, with the SM04B-GHS-TB, SM04B-SRSS-TB and KT-0603R among its other parts. Its parts include 25 resistors, 11 capacitors, 8 connectors, 4 diodes and 4 inductors. It belongs with the RP2040 boards of this library.
Main components
11
SN65HVD230D
SOIC-8-40℃~+85℃ 1 17mA 1Mbps 370uA 3V~3.6V CAN Transceiver Low-power mode、Wake-up function、ESD protection、Thermal shutdown protection、Bus fault protection、Hot-swap protection SOIC-8 CAN Transceivers ROHSTexas InstrumentsCAN TransceiversM24C64-RMN6TP
SOIC-8-40℃~+85℃ 1.8V~5.5V 1MHz 2.5mA 200 Years 3uA 4,000,000 Cycles 5ms 64Kbit Hardware write protection function、Built-in power-on reset (POR)、Built-in error correction code (ECC) function I2C SOIC-8 EEPROM ROHSSTMicroelectronicsEEPROM
MCP2515T-I/SO-HX
SOP-18SOP-18 CAN Controllers ROHSZHHXDZCAN Controllers
SM04B-GHS-TB
SMD,P=1.25mm,卧贴-25℃~+85℃ 1 1.25mm 1A 1x4P 4 4.13mm 4.25mm 4P 50V 8.25mm Auxiliary Solder Pin GH PA9T Phosphor bronze Surface Mount, Right Angle Tin UL94V-0 White SMD,P=1.25mm,卧贴 Wire To Board Connector ROHSJSTWire To Board Connector
SM04B-SRSS-TB
Header SR 1.0 SMT side entry, 1mm pitchJSTUncategorised
KT-0603R
0603-40℃~+85℃ 1.6mm x 0.8mm square LED 1.8V~2.4V 120° 20mA 300mcd 40mW 615nm~630nm 645nm Discrete Diode Red Water Clear 0603 LED Indication - Discrete ROHSHubei KENTO ElecLED Indication - Discrete
MBR0530-TP
SOD-123Schottky DiodesMicro Commercial ComponentsNCD0603Y1
0603-30℃~+85℃ 1.6V~2.6V 130° 220mcd 25mA 586nm~595nm 595nm 65mW Discrete Diode Yellow 0603 LED Indication - Discrete ROHSFoshan NationStar OptoelectronicsLED Indication - Discrete
S3B-PH-SM4-TB
--25℃~+85℃ 1 100V 1x3P 2A 2mm 3 3P 5.5mm 8.6mm 9.9mm Auxiliary Solder Pin Beige Copper alloy PA PH Surface Mount, Right Angle Tin UL94V-0 - Wire To Board Connector ROHSJSTWire To Board Connector
X322516MLB4SI
SMD3225-4P-40℃~+85℃ 16MHz 50Ω 9pF Crystal Oscillator ±10ppm ±20ppm SMD3225-4P Crystals ROHSYXCCrystals
NSMD050-33V
12061.4mm 1.8mm 100A 100ms 150mΩ 1A 3.5mm 33V 500mA 600mW 700mΩ 1206 Resettable Fuses ROHSTECHFUSEResettable Fuses
README
README.md
CyphalPicoBase/CAN
Board for the Raspberry Pi Pico to connect via CAN using OpenCyphal and UCANPHY Micro.
You can buy one here 💸.
Description
The CyphalPicoBase/CAN provides the following functions:
- CAN connectivity to a OpenCyphal CAN bus using a Microchip MCP2515 CAN controller (datasheet)
- Onboard I2C EEPROM to store settings
- measurement of CAN bus voltage using GP26
- onboard temperature measurement using the internal temperature sensor of the Raspberry Pi Pico
- two status LEDs (D4 and D5)
- Raspberry Pi Pico directly mounted on bottom layer
- connectors to several external functions (see list below)
Firmware
- CyphalPicoBase-CAN-firmware: This is the default firmware for this board. It enables all basic functions
Pin Usage and connectors
Raspberry Pi Pico (CN1)
| Pin | Pin Name | Signal | Description |
|---|---|---|---|
| 1 | GP0 | UART0_TX | reserved for future use (GNSS) |
| 2 | GP1 | UART0_RX | reserved for future use (GNSS) |
| 3 | GND | GND | |
| 4 | GP2 | ||
| 5 | GP3 | ||
| 6 | GP4 | I2C0_SDA | for eeprom and qwiic connector |
| 7 | GP5 | I2C0_SCL | for eeprom and qwiic connector |
| 8 | GND | GND | |
| 9 | GP6 | GPI0 | input 0 |
| 10 | GP7 | GPI1 | input 1 |
| 11 | GP8 | GPI2 | input 2 |
| 12 | GP9 | GPI3 | input 3 |
| 13 | GND | GND | |
| 14 | GP10 | GPO0 | output 0 |
| 15 | GP11 | GPO1 | output 1 |
| 16 | GP12 | reserved | Neopixel |
| 17 | GP13 | reserved | radiation detector |
| 18 | GND | GND | |
| 19 | GP14 | SERVO0 | servo 0 |
| 20 | GP15 | SERVO1 | servo 1 |
| 21 | GP16 | SPI_MISO | SPI for MCP2515 |
| 22 | GP17 | MCP2515_CS | SPI for MCP2515 |
| 23 | GND | GND | |
| 24 | GP18 | SPI_CLK | SPI for MCP2515 |
| 25 | GP19 | SPI_MOSI | SPI for MCP2515 |
| 26 | GP20 | MCP2515_INT | interrupt for MCP2515 |
| 27 | GP21 | STATUS_LED2 | internal status LED 2 |
| 28 | GND | GND | |
| 29 | GP22 | STATUS_LED3 | internal status LED 3 |
| 30 | RUN | RESET | Reset for Board |
| 31 | GP26 | INPUT_VOLTAGE | measure input voltage |
| 32 | GP27 | ANALOG_INPUT0 | analog input |
| 33 | GND | GND | |
| 34 | GP28 | ANALOG_INPUT1 | analog input |
| 35 | ADC_VREF | ||
| 36 | 3V3 (OUT) | 3V3-rail | supply voltage for board |
| 37 | 3V3_EN | ||
| 38 | GND | GND | |
| 39 | VSYS | ||
| 40 | VBUS | 5V-rail | supply voltage for board |
Pinout
I2C (CN2)
compatible to the Sparkfun qwiic standard (https://www.sparkfun.com/qwiic). JST SH 1mm 4-pin.
| pin number | signal |
|---|---|
| 1 | GND |
| 2 | +3V3 |
| 3 | I2C_SDA |
| 4 | I2C_SCL |
serial (CN3)
JST SH 1mm 4-pin.
| pin number | signal |
|---|---|
| 1 | GND |
| 2 | +3V3 |
| 3 | SER_TX |
| 4 | SER_RX |
CAN (CN4 and CN5)
UCANPHY Micro connector, according to the UCANPHY_Specification (https://forum.opencyphal.org/t/cyphal-can-physical-layer-specification-v1-0/1471). JST GH 1.25mm 4-pin.
| pin number | signal |
|---|---|
| 1 | +5V |
| 2 | CANH |
| 3 | CANL |
| 4 | GND |
servo connector (CN7)
This is a regular 0.1-inch pin header.
Standard RC servos can be directly plugged into this connector
| pin number | signal |
|---|---|
| 1 | servo0 |
| 2 | servo1 |
| 3 | +5V |
| 4 | +5V |
| 5 | GND |
| 6 | GND |
input/output connector (CN8)
This is a regular 0.1-inch pin header.
| pin number | signal |
|---|---|
| 1 | +5V |
| 2 | GND |
| 3 | ANALOG_INPUT1 |
| 4 | GND |
| 5 | ANALOG_INPUT0 |
| 6 | GND |
| 7 | INPUT0 |
| 8 | GND |
| 9 | INPUT1 |
| 10 | GND |
| 11 | INPUT2 |
| 12 | GND |
| 13 | INPUT3 |
| 14 | GND |
| 15 | OUTPUT0 |
| 16 | GND |
| 17 | OUTPUT1 |
| 18 | GND |
| 19 | +5V |
| 20 | GND |
| 21 | +3.3V |
| 22 | GND |
| 23 | RESERVED0 |
| 24 | GND |
| 25 | NEOPIXEL |
| 26 | GND |
+5V can be fed over this connector to the servo connector (CN7) and the neopixel connector (CN12) if power supply over the CAN connector is not sufficicant.
neopixel connector (CN12)
connector for Adafruit Neopixel RGB leds (https://learn.adafruit.com/adafruit-neopixel-uberguide/the-magic-of-neopixels). JST PH 2mm 3-pin.
| pin number | signal |
|---|---|
| 1 | neopixel |
| 2 | +5V |
| 3 | GND |
enclosure
There exists a 3D printable enclosure to encapsulate the PCB.
PCB
Top
Bottom
Parts
62| Qty | Value | Footprint | References |
|---|---|---|---|
| 14 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R14, R17, R18, R19 |
| 8 | 100R | Resistor_SMD:R_0603_1608Metric | R11, R12, R20, R21, R22, R23, R24, R25 |
| 8 | 100nF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3, C4, C5, C6, C9, C10 |
| 4 | MHP_3.2_5.8 | MECH_mounting_holes:MHP_3.2_5.8 | MECH1, MECH2, MECH3, MECH4 |
| 2 | 10pF | Capacitor_SMD:C_0603_1608Metric | C7, C8 |
| 2 | 3k3 | Resistor_SMD:R_0603_1608Metric | R15, R16 |
| 2 | SM04B-GHS-TB | Connector_JST:JST_GH_SM04B-GHS-TB_1x04-1MP_P1.25mm_Horizontal | CN4, CN5 |
| 2 | SM04B-SRSS-TB | generationmake:JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | CN2, CN3 |
| 1 | 100 uF / 6,3 V | Capacitor_SMD:CP_Elec_5x5.3 | C11 |
| 1 | 100k | Resistor_SMD:R_0603_1608Metric | R13 |
| 1 | DNI | Connector_PinHeader_2.54mm:PinHeader_2x13_P2.54mm_Vertical | CN8 |
| 1 | DNI | Package_TO_SOT_SMD:SOT-23 | D1 |
| 1 | DNI | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Horizontal | CN7 |
| 1 | KT-0603R | LED_SMD:LED_0603_1608Metric | D5 |
| 1 | Label | generationmake:qwiic_logo | L4 |
| 1 | Label | labels:generationmake_small_solder | L2 |
| 1 | Label | labels:opencyphal_small | L3 |
| 1 | Label | labels:generationmake_small_silk | L1 |
| 1 | M24C64-RMN6TP | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | MBR0530T | Diode_SMD:D_SOD-123 | D2 |
| 1 | MCP2515T-I/SO | Package_SO:SOIC-18W_7.5x11.6mm_P1.27mm | U8 |
| 1 | NCD0603Y1 | LED_SMD:LED_0603_1608Metric | D4 |
| 1 | PTS636 SM43 SMTR LFS | Button_Switch_SMD:SW_SPST_CK_RS282G05A3 | SW1 |
| 1 | RASPBERRYPI_PICO | generationmake:RASPI_PICO_SOLDER_Kopie | CN1 |
| 1 | S3B-PH-SM4-TB | generationmake:JST_PH_S3B-PH-SM4-TB_1x03-1MP_P2.00mm_Horizontal | CN12 |
| 1 | SN65HVD230 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U9 |
| 1 | X322516MLB4SI | crystals:Crystal_SMD_3.2x2.5mm_4Pad | Y1 |
| 1 | nSMD050-33V | Fuse:Fuse_1206_3216Metric | F1 |
Questions
How big is the CyphalPicoBase CAN PCB?
It measures 52 × 36 mm and has 2 copper layers, 1.6 mm thick.
What parts does the CyphalPicoBase CAN use?
62 parts, built around the SN65HVD230D, M24C64-RMN6TP, MCP2515T-I/SO-HX and SM04B-GHS-TB. 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 CyphalPicoBase CAN KiCad files?
From the generationmake/CyphalPicoBase-CAN repository on GitHub, at the commit this page was made from: the board is kicad_source/CyphalPicoBase-CAN.kicad_pcb and its schematic kicad_source/CyphalPicoBase-CAN.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the CyphalPicoBase CAN design in my own project?
Its repository publishes it under the CERN-OHL-W-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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