Latest Grove add-on for the Pi includes RISC-V NPU for edge AI duty
Seeed has launched a $24.50 “Grove AI HAT” with 6x Grove interfaces and Arduino IDE support for accelerating edge AI workloads on the Raspberry Pi. The HAT features a Sipeed MAix M1 module running a Kendryte K210 RISC-V neural processing chip.
Neural acceleration chips seem to be everywhere these days — built into SoCs such as Qualcomm’s Snapdragon 845 or available in acceleration chips built on to add-on boards, such as Google’s Edge TPU chip found on its Coral Dev Board or Aaeon’s Intel/Movidius Myriad X-based AI Core X M.2 and mini-PCIe modules. Now, Seeed has opened pre-orders for a Grove AI HAT for Edge Computing add-on for the Raspberry Pi equipped with a dual-core, Kendryte K210 (translated) RISC-V processor designed to assist the Pi in accelerating AI inference on the edge.
The $24.50 HAT add-on supplies the Kendryte K210 chip via the non-WiFi version of the Indiegogo funded Sipeed MAix M1 module, one of several Sipeed productsdistributed by Seeed. The Kendryte K210 on the Sipeed MAix M1 (or MAix-I) features a 64-bit, dual-core CPU in addition to the 16-bit neural network processor.
The Kendryte K210 runs on a baremetal Kendryte Standalone SDK, or alternatively, FreeRTOS. Seeed has added the full ArduinoCore-API interface to support Arduino IDE, Linux, Windows, Mac OS X, and other development environments. As a result, Raspberry Pi users “can run Grove Arduino Libraries and many excellent Arduino libraries on this board easily,” says Seeed. The Grove AI HAT can also be used as a standalone board.
Whereas the Snapdragon 845 has 3-TOPS AI performance and the Myriad X is rated at 1-TOPS, the 28nm fabricated Kendryte K210 offers more modest acceleration capabilities. According to Seeed’s product page for the earlier Sipeed MAix BiT Kit, which features the same K210 chip without the HAT support, the chip enables 0.25-TOPS @ 0.3W at 400MHz, or when overclocked to 800MHz, 0.5-TOPS, Seeed clocks the HAT version at 600MHz. The chip also supplies an FPU and an audio processor that supports up to 8-mic input.
Later this year, the Grove AI HAT board will be available in a kit with the same LCD and camera add-ons found on the earlier Sipeed MAix BiT Kit for RISC-V AI+IoT. More details on earlier Sipeed modules and kits may be found in this CNXSoft report.
The Grove AI HAT for Edge Computing is available on pre-order for $24.50, with the price moving to $28.90 when the board ships on June 15. More information may be found on Seeed’s Grove AI HAT product page.
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