Broccoli is a software project for running distributed task queues across a cluster of ESP32 devices. Its defining idea is that the nodes are multipurpose: each can serve as a worker, broker, and task-queue manager, rather than relying on separate machines for those roles.
What Broccoli does in an ESP32 cluster
Broccoli organizes tasks so they can be distributed among connected ESP32 boards. In the project description from Cameron Coward’s 2018 Hackster article, each node can perform three jobs:
- Worker: carries out assigned tasks.
- Broker: helps coordinate task distribution.
- Task-queue manager: manages the queue of work.
This is the project’s key architectural distinction: nodes are described as identical and capable of taking on all three roles, instead of dividing the cluster into dedicated manager and worker machines. That describes the intended design, not a performance guarantee or a claim that any task can run on an ESP32.
Why an ESP32 cluster is not a Raspberry Pi cluster
An ESP32 has a processor, memory, and storage, so it can do useful computing work. But it is a microcontroller platform, not a general-purpose computer equivalent to a Raspberry Pi. A cluster of ESP32 boards should therefore be understood as a way to distribute suitable tasks across microcontrollers—not as a drop-in replacement for a cluster of single-board computers.
#1 Best Overall
- 2.4GHz Dual Mode WiFi + Bluetooth Development Board
- Support LWIP protocol, Freertos
- SupportThree Modes: AP, STA, and AP+STA
- Ultra-Low power consumption, Compatible with Arduino IDE
- ESP32 is a safe, reliable, and scalable to a variety of applications
The Hackster article compared an ESP32 at roughly $7 with a Raspberry Pi 3B+ at at least $35, as prices stated when the article was published on April 18, 2018. Those are historical figures, not current prices or a present-day comparison of total system cost.
What hardware you need to confirm
ESP32 development boards are the relevant hardware category, but the available project information does not establish a currently supported retail model or a validated bill of materials. It also does not provide a reliable basis for claims about present-day performance, power use, or the number of boards needed.
Rank #2
- Dual-Core Performance Up to 240 MHz: Run sensor processing, wireless communication, automation logic and connected-device tasks on a 32-bit dual-core ESP32 platform designed for responsive embedded and IoT projects
- Built-in Wi-Fi and Bluetooth 4.2: Connect to 2.4 GHz Wi-Fi networks or use Bluetooth Classic and BLE for wireless sensors, smart devices, remote controls, home automation and other connected projects
- Flexible Power-Saving Modes: ESP32 power-management features support dynamic clock scaling and low-power operating modes, helping developers reduce energy use in compatible sensing, monitoring and connected-device applications, suitable for battery-powered Internet of Things (IoT) devices.
- USB-C Programming with CP2102: Connect through USB-C for power, sketch uploads and serial monitoring, while GPIO, UART, SPI and I2C interfaces support sensors, displays, motor drivers and other modules (USB-C cable not included)
- Over-the-Air Update Support: Configure OTA functionality through a compatible ESP-32 software framework to update deployed firmware over Wi-Fi without reconnecting the board by USB for every revision
Before buying boards, consult the Broccoli GitHub repository for its current instructions and compatibility details. Confirm that the documentation matches the specific board you intend to use; do not assume that every board marketed as an ESP32 is supported or interchangeable.
Quick Recap
Best Value
- 2.4GHz Dual Mode WiFi + Bluetooth Development Board
- Ultra-Low power consumption, works perfectly with the Arduino IDE
- Support LWIP protocol, Freertos
- SupportThree Modes: AP, STA, and AP+STA
- ESP32 is a safe, reliable, and scalable to a variety of applications
Rank #4
- 2.4GHz Dual Mode WiFi + Bluetooth Development Board
- Support LWIP protocol, Freertos;ESP32 is a safe, reliable, and scalable to a variety of applications
- SupportThree Modes: AP, STA, and AP+STA
- Ultra-Low power consumption, Compatible with Arduino IDE
- 1PCS 30Pin ESP32 Development Board 2.4GHz WiFi Dual Cores Microcontroller Integrated with Antenna RF Low Noise Amplifiers Filters
Rank #3
- Powerful ESP-32 Board: Unlock the world of Internet of Things (IoT) and advanced electronics with the heart of this kit: the ESP-32 board. It features a powerful dual-core processor, integrated Wi-Fi and Bluetooth 4.2, making it perfect for building connected, smart devices that communicate with your phone or the cloud. It's fully compatible with the Arduino IDE for easy programming.
- Super Starter Kit: This kit contains over 35 different modules and electronic components, including sensors, displays, motors, and input devices. From LEDs and buttons to an OLED screen, servo motor, and keypad, you have everything needed to explore a vast range of projects in one box.
- Step by Step Online Tutorial: Jump right in with our detailed, beginner-friendly tutorial. Access 30+ projects with complete code, clear circuit diagrams, and step-by-step instructions. Learn the fundamentals of electronics, coding, and how to utilize the ESP-32's unique capabilities without any prior experience.
- Hands-on Learning for All Skill Levels: Perfect for students, makers, engineers, and hobbyists. Start with basic circuits and coding, then progress to intermediate and advanced IoT applications. Build practical projects like weather stations, smart home controllers, remote-controlled devices, and interactive gadgets. The skills you learn are the foundation for real-world innovation.
- Quality & Great Support: Elegoo is committed to quality. We provide a clear, detailed tutorial guide, refined code, and a well-organized component kit. All modules are carefully selected for reliability and ease of use. Our dedicated technical support team and active online community are ready to help you succeed in your learning journey.
How to decide whether Broccoli fits your project
- Consider it if your goal is to explore distributed task queues using ESP32 hardware and you are prepared to work within a microcontroller environment.
- Do not treat it as an established recipe for a Raspberry Pi-style cluster, a benchmarked route to faster computing, or a turnkey system with a verified current parts list.
- Check first that the repository’s present documentation explains setup and supports the boards you can obtain. The available project description does not establish current maintenance status or detailed setup steps.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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