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Seeed Wio Terminal
The Seeed Wio Terminal is a development board from Seeed Studios with a Cortex-M4 microcontroller, motion sensors, an LCD display, and Grove connectors to easily connect external sensors. Seeed Studio has added support for this development board to Edge Impulse, so you can sample raw data and build machine learning models from the studio. The board is available for 29 USD directly from Seeed.
Seeed Wio Terminal
With the impulse designed, trained and verified you can deploy this model back to your Wio Terminal. This makes the model run without an internet connection, minimizes latency, and runs with minimum power consumption. Edge Impulse can package up the complete impulse - including the signal processing code, neural network weights, and classification code - up in a single library that you can run on your development board.
ESP-NN Conflict Workaround
With the recent addition of ESP-NN acceleration, the Wio Terminal will attempt to build the ESP-NN files in the Arduino library, which results in several errors during linking. While we work on a permanent solution, remove the ESP-NN folder to compile Wio Terminal applications with the Edge Impulse SDK.
If you see an error like the following Arduino, it means the Wio Terminal build process is attempting to link to the ESP-NN library (which is not supported):
/Users/shawnhymel/Library/Arduino15/packages/Seeeduino/tools/arm-none-eabi-gcc/7-2017q4/bin/../lib/gcc/arm-none-eabi/7.2.1/../../../../arm-none-eabi/bin/ld: error: /private/var/folders/0j/x5ptl26j45v1tk3s8bb3cqyw0000gn/T/arduino/sketches/ECF7D69B795FD172E07BD549315696FA/libraries/Snake_v2_inferencing/edge-impulse-sdk/porting/espressif/ESP-NN/src/pooling/objs.a(esp_nn_max_pool_s8_esp32s3.S.o): Conflicting CPU architectures 13/0
/Users/shawnhymel/Library/Arduino15/packages/Seeeduino/tools/arm-none-eabi-gcc/7-2017q4/bin/../lib/gcc/arm-none-eabi/7.2.1/../../../../arm-none-eabi/bin/ld: failed to merge target specific data of file /private/var/folders/0j/x5ptl26j45v1tk3s8bb3cqyw0000gn/T/arduino/sketches/ECF7D69B795FD172E07BD549315696FA/libraries/Snake_v2_inferencing/edge-impulse-sdk/porting/espressif/ESP-NN/src/pooling/objs.a(esp_nn_max_pool_s8_esp32s3.S.o)
While we work on a permanent solution, the workaround is to remove the ESP-NN/ folder found in Arduino/libraries/<ei-project-name>/src/edge-impulse-sdk/porting/espressif/