PiCAN3 CAN Bus HAT for Raspberry Pi 4

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The PiCAN3 board with SMPS (Switch Mode Power Supply) provides CAN-Bus capabilities for the Raspberry Pi 4. It uses the Microchip MCP2515 CAN controller with MCP2551 CAN transceiver. Connection is made via DB9 or the onboard 3-way screw terminal.

The Switch Mode Power Supply (SMPS) allows connecting an input voltage range of 6 VDC to 20 VDC suitable for industrial and automotive applications and environments. The SMPS will power the Raspberry Pi plus PICAN3.

There is an easy-to-install SocketCAN driver, and programming can be accomplished in C or Python.

The onboard PCF8523 is a CMOS Real-Time Clock (RTC) and calendar chip optimized for low power consumption. Data is transferred serially via the I²C-bus with a maximum data rate of 1000 kbit/s. Alarm and timer functions are accessible with the opportunity to produce a wake-up signal on an interrupt pin. An offset register allows fine-tuning of the clock. The PCF8523 has a backup battery switch-over circuit, which detects power failures and automatically switches to the battery supply when a power failure occurs.

Features

CAN 2.0B at 1 Mb/s
High speed SPI Interface (10 MHz)
Standard and extended data and remote frames
CAN Bus connection via standard 9-way sub-D connector or screw terminal
Compatible with OBDII cable
Solder bridge to set different configuration for DB9 connector.
Onboard 120 Ohm termination resistor
Serial LCD ready
LED indicator
Four fixing holes, comply with Pi Hat standard.
SocketCAN driver, appears as can0 to application.
Interrupt RX on GPIO25
5VDC@3A SMPS to power Raspberry Pi and accessories from DB9 or screw terminal

Reverse polarity protection
High efficiency switch mode design
6 VDC to 20 VDC input range

RTC with battery backup (battery not included, requires CR1225 cell)

Documentation

Development Resources incl. Sample Code

Note: The programming samples, other than those for the RTC, are identical to those of the PICAN2:

Programming the Raspberry Pi - Getting Started with Python

The Raspberry Pi is a low-cost, credit-card-sized single-board-computer that connects to a computer monitor or TV and uses a standard keyboard and mouse. It is a small but capable device that empowers people of all ages to discover computing and to learn how to develop applications in programming languages such as Scratch and Python.

Learn to create innovative programs and fun games on your powerful Raspberry Pi computer with practically no programming expertise required. This useful book has been updated to fully cover the newest Raspberry Pi, including upgrades to the Raspbian operating system.

Explore how to configure hardware and software, write Python scripts, build user-friendly GUIs, and control external electronics. DIY projects include a hangman game, RGB LED controller, digital clock, and RasPiRobot complete with an ultrasonic rangefinder.

Set up your Raspberry Pi and explore its features
Navigate files, folders, and menus
Write Python programs using the IDLE editor
Use strings, lists, functions, and dictionaries
Work with modules, classes, and methods
Create user-friendly games using Pygame
Build intuitive user interfaces with Tkinter
Attach external electronics through the GPIO port
Add powerful Web features to your projects

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SK Pang Electronics

PiCAN3 CAN Bus Board for Raspberry Pi 4 with 3A SMPS And RTC

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