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espBerry - ESP32 Extended Functionality through Raspberry Pi HATs
The espBerry DevBoard combines the ESP32-DevKitC development board with any Raspberry Pi HAT by connecting to the onboard RPi-compatible 40-pin GPIO header. The purpose of the espBerry should not be perceived as a Raspberry Pi alternative but as extending the ESP32’s functionality by tapping into the vast offerings of RPi HATs in the market and taking advantage of the multiple and flexible hardware options. The espBerry is the perfect solution for Internet of Things (IoT) applications, especially those requiring wireless capabilities. All open-source code samples take advantage of the popular Arduino IDE with its excellent programming capabilities.
Unleash the powerful ESP32 hardware capabilities to easily connect two CAN ports to Bluetooth, BLE, WiFi, USB, etc.
espBerry Features
- Processor: ESP32 DevKitC
- 32-Bit Xtensa dual-core @240 MHz
- WiFi IEEE 802.11 b/g/n 2.4 GHz
- Bluetooth 4.2 BR/EDR and BLE
- 520 kB SRAM (16 kB for cache)
- 448 kB ROM
- Programmable per USB A/micro-USB B cable
- Raspberry Pi Compatible 40-pin GPIO header
- 20 GPIO
- 2 x SPI
- 1 x UART
- Input Power: 5 VDC
- Reverse polarity protection
- Overvoltage Protection
- Power Barrel Connector Jack 2.00mm ID (0.079″), 5.50mm OD (0.217″)
- 12/24 VDC options available
- Operating Range: -40°C ~ 85°C
Note: Most RPi HATs operate at 0°C ~ 50°C - Dimensions: 95 mm x 56 mm – 3.75″ x 2.2″
Complies to Standard Raspberry Pi HAT Mechanical Specifications…
PICAN-FD with RTC HAT
The PiCAN FD board adds CAN Bus FD (Flexible Data Rate) capability to the Raspberry Pi, utilizing the Microchip MCP2517FD CAN FD controller and the MCP2562FD CAN transceiver. Designed by Bosch, CAN FD is an enhancement of the original CAN protocol (ISO 11898-1), offering increased data bandwidth and efficiency for modern automotive and industrial networks.
The board includes onboard connection options via DB9 connector or a 4-way screw terminal, making integration into a variety of systems easy. An optional 5V 1A switched-mode power supply (SMPS) version is available, allowing the Raspberry Pi to be powered directly through either the screw terminal or DB9 connector.
In addition, the board features an onboard PCF8523 real-time clock (RTC) with battery backup support (coin cell battery not included). This RTC ensures accurate timekeeping even when the Raspberry Pi is powered down, which is critical for time-stamping CAN messages and maintaining logs in remote or disconnected applications.
The board is supported by an easy-to-install SocketCAN driver, making it compatible with standard Linux CAN tools. Programming interfaces are available in both C and Python, offering flexibility for developers building automotive, robotics, or industrial automation systems.
Features
- Arbitration Bit Rate up to 1Mbps
- Data Bit Rate up to 8Mbps
- CAN FD Controller modes
- Mixed CAN2.0B and CAN FD mode
- CAN2.0B mode
- Conforms to ISO11898-1:2015
- High speed SPI Interface
- CAN connection via standard 9-way sub-D connector or screw terminal
- Compatible with OBDII cable
- Solder bridge to set different configuration for DB9 connector
- 120Ω terminator ready
- Serial LCD ready
- LED indicator
- Four fixing holes, comply with Pi Hat standard
- SocketCAN driver, appears as can0 to application
- Interrupt RX on GPIO25
- RTC with battery backup (battery not included) - Battery size is Lithium CR1220
More Resources
Development Resources
Programming Support
- Programming ESP32 Board with Arduino IDE...
- Introduction to ESP32 Programming...
- Programming the PCF8523 RTC with C in the Arduino IDE (ESP32 Edition)...
Bluetooth & BLE Information
- Adafruit - Bluetooth & BTLE...
- Exploring Bluetooth 5 - Going the Distance...
- The Basics of Bluetooth Low Energy (BLE)...
- Understanding Bluetooth Range...
Electronics Projects with the ESP8266 and ESP32: Building Web Pages, Applications, and WiFi Enabled Devices
Copperhill Technologies highly recommends using this book for your wireless application projects. Yes, many good books and free online resources are available these days, but this is the book we are using. It made our approach to Bluetooth, BLE, and WIFI a breeze. Programming wireless applications without hassles was fun, and we will share them on this web page.
Projects throughout the book utilize the wireless functionality and processing power of the ESP microcontrollers. Projects are built in the Arduino IDE, so you don't need to download other programming software. In addition, mobile apps are now ubiquitous, making the app build projects of the book very relevant, as are the web page design projects.
In Electronics Projects with the ESP8266 and ESP32, you'll see how easy and practical it is to access information over the internet, develop web pages, build mobile apps to remotely control devices with speech recognition, or incorporate Google Maps in a GPS route tracking app.
