Gareth Halfacree is the author of the Raspberry Pi User Guide and an expert in educational and embedded computing. A noted technology journalist and long-time tech author, Gareth also has an extensive background in computing education.
The microcontroller market — where chips designed for real-time embedded use are placed into development boards typically referred to as “microcontrollers” themselves — is rarely shaken up. If you want something friendly to beginners, you pick an Arduino with a Microchip ATmega328; if you want connectivity, an Espressif ESP32-based board; for performance, STMicro’s STM32 series.
The Raspberry Pi Pico, a $4 development board with a powerful, custom dual-core Arm Cortex-M0+ microcontroller and flexible programmable input/ output (PIO) blocks, shook things up with its launch this year — but it was the news that these new RP2040 chips would be sold individually at just $1 each that caused the biggest aftershocks.
Accompanying the Pico’s launch, a number of manufacturers released boards based on the RP2040: Adafruit, Arduino, Pimoroni, and SparkFun to start. In the months since, nearly 70 announcements have followed with designs spanning the gamut from domain-specific gadgets like the Raspberry Fish synth from TINRS to general-purpose tinkering boards like Invector Labs’ Challenger RP2040.
“We’re pretty happy with how things are going,” Raspberry Pi co-founder Eben Upton told us. “Lots of enthusiasm for the community as people really start to understand what the chip can do. We’re still on track to clear our Pico backlog, and get RP2040 into high-volume, over 1 million unit availability before the end of the year.”
Adafruit’s Limor Fried amplifies the excitement, saying “It’s one of the best things to ever happen for electronics.”
At time of writing, we’ve identified over 60 distinct boards that utilize this new chip, with more coming continuously.
Blinking LEDs on my DIY RP2040 board. Soldering the chip was a bit challenging, and I couldn’t use the defaults of the sdk so I had to make my own board definitions, but I got it all to work. pic.twitter.com/8qbhlO2bPN
— Oak Development Technologies (@oakdevtech) August 22, 2021
Oak Development Technologies PixelLeaf RP2040 — 10×5 LED matrix with RP2040
Working on yet another RP2040 design. This time to try out some 1.54" E-Ink displays we picked up a few months ago. This is the Inky Tree 2040 :) It's not done, probably will add some buttons and STEMMA/QWIIC connectors and a few other GPIO headers. pic.twitter.com/fJqG2hPzDN
— Oak Development Technologies (@oakdevtech) August 16, 2021
— Oak Development Technologies (@oakdevtech) April 7, 2021
What is the RP2040 Stamp?
It's a hand-solderable SMD/TH module that integrates the @Raspberry_Pi RP2040 MCU with 8MB of FLASH, an LDO, LiPo charge mgmt. (w/ LED), a reset button, and a Neopixel
It breaks out all the GPIOs as well as USB, SWD, BOOTSEL, RST, and the voltage pins. pic.twitter.com/NhQlfeNi9W
LIDSat-3 with dual @Raspberry_Pi RP2040's. Maybe I'll actually have this done by the time bare chips end up shipping. If I work too fast I'll have to rob some of my Pico boards of their silicon. pic.twitter.com/H0mwfijGmW
Immersed myself for the last two days into @Raspberry_Pi Pico hardware internals & #RP2040 PCB design: love the ease of mass-storage-based USB firmware programming, RAM-based dual-core with hardware FIFOs & programmable IO-state machines for handling obscure peripheral protocols. pic.twitter.com/uL1D0P6Pm5
I'm still not 100% sure if I'm doing this yet, BUT if you had to give a name to a RP2040 based 3d printer board with 4 TMC2209 drivers, support for one extruder and one heated bed, and maybe a screen, what would you call it? I need a great name.
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Gareth Halfacree is the author of the Raspberry Pi User Guide and an expert in educational and embedded computing. A noted technology journalist and long-time tech author, Gareth also has an extensive background in computing education.
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