Adafruit’s Fruit Jam is a credit card-sized computer with a RP2350B microprocessor

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Friday, February 07, 2025
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Adafruit’s Fruit Jam is a credit card-sized computer with a RP2350B microprocessor

The Fruit Jam is a single board computer (SBC) that's about the size of a credit card, or a Raspberry Pi Model B. But while the latest Raspberry Pi SBCs are powered by a 2.4 GHz quad-core ARM Cortex-A76 processor, the Fruit Jam instead uses a Raspberry Pi RP2350B microprocessor with two 150 MHz ARM Cortex-M33 cores and two Hazard3 RISC-V cores.

Developed by the folks at Adafruit, and inspired by the IchigoJam project, the Fruit Jam board is designed to be used as a standalone computer… although one that's best used for lightweight tasks.

That's because in addition to its relatively slow processor, the RP2350B has just 8MB of PSRAM and 520KB of SRAM for memory and 16MB of onboard QSPI flash storage.

The board does have a microSD card slot for additional storage, as well as a bunch of ports and connectors including:

  • 1 x USB Type-C (for power, data, and flashing firmware)
  • 2 x USB Type-A
  • HSTX (for DVI output)
  • I2S (for stereo headphone + mono speaker)
  • Stemma QT I2C
  • EYESPI
  • 16-pin socket header with 10 A/D GPIO + 5V/3V/GND power pins
  • There are also three tactile switches and 5 "NeoPixel" LED lights.

    Adafruit hasn't announced pricing or availability yet – in a blog post the company suggests it's designed the board but is still waiting for the first printed circuit boards to be shipped and assembled. But given the relatively inexpensive hardware and low processing power, I suspect that the Fruit Jam (not necessarily it's final name) will be a fairly cheap toy for folks that want to tinker with Raspberry Pi's microcontroller.

    via Tom's Hardware

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