Edgi-Talk is a machine learning platform/development kit powered by an Infineon PSOC Edge E84 Arm Cortex-M55/M33 SoC featuring Arm Helium, an Arm Ethos-U55 micro NPU, and an ultra-low-power NNLite neural network accelerator, all of which enable AI/ML processing at varying power/performance levels.
The devkit also comes with 128 MB PSRAM, 128MB QSPI flash, a 4.3-inch capacitive touchscreen display, two digital microphones, a speaker, WiFi 6 and Bluetooth LE 6.0 wireless connectivity, motion and environmental sensors, as well as a 40-pin Raspberry Pi header and two PMOD connectors for expansion.
Edgi-Talk specifications:
- SoC – Infineon PSOC Edge E84
- CPU
- Arm Cortex-M55 @ 400 MHz with FPU, MPU, Arm Helium support, 256KB i-TCM, 256KB D-TCM, and 5MB SRAM
- Arm Cortex-M33 @ 200 MHz with 1MB SRAM, 64KB ROM
- GPU – Low-power 2.5D GPU
- NPU – Dual architecture Arm Ethos-U55 NPU + NNLITE NPU
- CPU
- System Memory – 128 MB PSRAM
- Storage
- 128 MB QSPI Flash
- MicroSD card slot
- Display – 4.3-inch MIPI-DSI high-definition capacitive touchscreen
- Audio
- 2x digital microphones
- 1 W amplifier for built-in speaker
- USB – USB High-Speed Type-C port
- Wireless – Dual-band Wi-Fi 6 and BLE 6.0 via Infineon AIROC CYW55512
- Sensors
- AHT20 temperature & humidity sensor
- LSM6DS3TR-C 6-axis inertial measurement unit
- Expansion
- 40-pin Raspberry Pi-compatible GPIO header with UART, SPI, I2C…
- 2x PMOD connector
- Debugging – DAP/Trace via USB-C port, 6-pin SWD pads
- Power Supply
- 5V via USB Type-C port
- 2-pin battery connector for standard 500 mAh 502540 LiPo battery (not included)
- Dimensions – 115 x 73 x 20 mm
The development board is supported by RT-Thread RTOS and comes pre-bundled with the XiaoZhi AI large language model, enabling users to build a voice assistant prototype, create a smart sensor hub, or develop a Smart human-computer interface (HMI).
You’ll find the RT-Thread Board Support Package (BSP) on GitHub, along with code samples (C language) for all features of the board, and basic documentation to get started with the RT-Thread Studio IDE. A video demo of the platform is embedded at the end of this post.
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RT-Thread launched the Edgi-Talk on Crowd Supply with a $13,900 funding target, which represents 100 devkits at $139. Each includes a development board, a custom enclosure, an integrated touch display, a speaker, and two microphones for local interaction with the preinstalled Xiao Zhi large language model, as well as one USB Type-C cable. Shipping is free to the US and adds $14 to the rest of the world. Deliveries are scheduled to start at the end of February 2026.
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.
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