Wio Lite AI – An STM32H725A Cortex-M7 board for AI vision applications

Wio Lite AI

Wio Lite AI is another development board from Seeed Studio’s “Wio Lite” family. The board is based on STMicro STM32H725A Cortex-M7 microcontroller with a dual-band WiFi and Bluetooth module, as well as camera & display interfaces for connected AI vision applications. The board builds upon the earlier Wio Lite and  Wio Lite W600 boards with built-in wireless connectivity but offers much more processing power for computer vision or other applications. Wio Lite AI specifications: MCU – STMicro STM32H725AE Arm Cortex-M7 microcontroller @ 550MHz with DSP instructions, 512 KB flash, 564 KB RAM Memory – 8MB PSRAM (from AP Memory) Storage – 16MB SPI NOR flash and  MicroSD card slot Display I/F – 40-pin FPC connector for LCD RGB565 or RGB888 displays Camera – 24-pin FPC connector for DCMI camera (OV2640) Audio –  12-pin FPC connector for audio Connectivity – Dual-band 2.4GHz / 5GHz Wi-Fi and Bluetooth 5.1 Expansion – Feather […]

TTGO T-Motion USB adapter offers LoRa and GPS for under $30

USB LoRaWAN GPS tracker adapter

USB adapters are one of the easiest ways to add new features to existing hardware, and if you’d like to add LoRa connectivity and GPS tracking to any device or board with a USB board TTGO T-Motion USB adapter offers just that. Manufactured by LilyGO, the USB dongle is based on AcSiP S76G system-in-package that integrates an STM32 MCU with a Semtech SX1276 LoRa transceiver and GPS into a single. The GPS antenna is placed on the board inside the enclosure, while the external LoRa antenna is connected through an SMA connector. TTGO T-motion specifications: SiP – AcSiP S76G system-in-package with STMicro STM32L073x Arm Cortex M0+ MCU with up to 192 KB of Flash memory and 20 KB of RAM, Semtech SX1276 supporting global 868 MHz or 915 MHz ISM-Bands, Sony CXD5603GF GNSS receiver. Antenna Internal GPS antenna External LoRa antenna Host interface – USB 2.0 male port Misc – […]

STEVAL-VOICE-UI Amazon qualified Alexa Smart Home evaluation kit is based on STM32H7 MCU


We’ve already covered plenty of Amazon-qualified development kits working with Alexa Voice Services. But here’s another one with STEVAL-VOICE-UI evaluation kit making it to the list of Smart Home Dev Kits, which Amazon describes as “reference designs for creating smart home products such as light switches, thermostats, or Wi-Fi routers”. STEVAL-VOICE-UI voice user interface (VUI) evaluation kit features an STMicro STM32H7 Arm Cortex-M7 microcontroller with 2 MB embedded flash, 1 MB embedded SRAM, 2.4 GHz Wi-Fi, and a microphone array with three MEMS microphones, as well as a loudspeaker, and some buttons and LEDs. STEVAL-VOICE-UI key features specifications: Microcontroller – STMicro STM32H753VIT6E Cortex-M7 MCU @ up to 550 MHz with 2 MB flash, 1 MB SRAM Connectivity – 2.4 GHz Wi-Fi subsystem (Murata 1DX module) coupled to 2MB NOR flash (ISSI IS25LP016D) Audio 3x MP23DB01HP MEMS microphones with 36 and 30 mm spacing FDA903D class D digital input automotive audio […]

A Smaller STM32MP1 SoM – Meet MYIR MYC-YA15XC-T CPU Module

Smaller STM32MP1 SoM

MYIR launched a fairly compact SoM and accompanying development board based on STM32MP1 Cortex-A7 microprocessor in January 2020. But apparently, the 45mm by 43mm MYC-YA157C module was too big (or expensive) for some customers, so the company has now designed a smaller STM32MP1 SoM with MYC-YA157C-T measuring just 39mm by 37mm thanks to the removal of the Ethernet PHY. MYC-YA15XC-T STM32MP1 system-on-module Specifications: SoC (one or the other) STM32MP151AAC3 single-core Cortex-A7 processor up to @ 800 MHz with Cortex-M4 core @ 209 MHz STM32MP153AAC3 dual-core Cortex-A7 processor up to @ 800 MHz with Cortex-M4 core @ 209 MHz, and CAN FD interface STM32MP157AAC3 dual-core Cortex-A7 processor up to @ 800 MHz, with Cortex-M4 core @ 209 MHz, 3D GPU, DSI display interface, and CAN FD Two configurations for memory and storage 256MB DDR3L, 256MB Nand Flash, 32KB EEPROM or 512MB DDR3L, 4GB eMMC Flash, 32KB EEPROM 148-pin stamp hole expansion […]

$6 RAK3172 WisDuo LoRaWAN module features STMicro STM32WL LoRa SoC

RAK3172 WisDuo

RAK3172 WisDuo is a LoRaWAN module smaller than most coins with 15.5×15 mm dimensions made possible thanks to STMicro STM32WL Cortex-M4 LoRa SoC, which we previously found in Seeed Studio’s $10 LoRa-E5 module and corresponding development boards. But while Seeed Studio relies on STM32WLE5JC SoC with 256KB flash and 64KB RAM in a 73-pin UFBGA package, RAKwireless RAK3172 Wisduo is powered by STM32WLE5CC with the same amount of memory or storage, but in a  48-pin UFQFPN package, and an even lower price at just $5.99 in single units. RAK3172 Wisduo specifications: SoC – STMicro STM32WLE5CC55 Arm Cortex‐M4 MCU @ 48 MHz with 256 KB flash memory with ECC, 64 KB RAM, and a sub-GHz radio based on Semtech SX126x LoRaWAN 1.0.3 specification compliant Supported bands – EU433, CN470, IN865, EU868, AU915, US915, KR920, RU864, and AS923 LoRaWAN Activation by OTAA/ABP LoRa Point to Point (P2P) communication Range – Greater than […]

Nokia E63 phone converted into LoRa messenger for secure, off-the-grid communication

Nokia E63 LoRa messenger

While LoRa radios are mostly designed to transmit data from sensors and to actuators, there have been attempts to leverage LoRa for messaging in the past with, for instance, the Meshtastic Mesh Networking Project to help hikers exchanged their GPS coordinates or other short messages, the Raspberry Pi Pico powered PICOmputer with QWERTY keyboard, display, and a LoRa module, and Pine64 is also working on developing LoRa hardware for messaging. Trevor Attema decided to repurpose his Nokia E63 Blackberry-like phone with a custom STM32H7 board with a LoRa radio while keeping the enclosure, display, backlighting, keyboard, and speaker which he calls the Off The Grid Messenger, or OTG Messenger for shorts. The custom board also adds Microchip ATECC608 crypto authentication chip for encrypted messages, and the LoRa Messenger would allow a theoretical transmission range of 16 kilometers in line of sight which would allow a small group of people to […]

Index PnP – An open-source pick-and-place machine for mid-scale manufacturing

Index PNP open-source pick-and-place machine

We’ve previously written about one open-source pick-and-place machine,  SimplePNP aiming to provide a low-cost solution for several hundred dollars and relying on OpenPnP open-source control software. But Stephen Hawes found out this type of solution did not cut it for mid-scale manufacturing (100 to 5000 units per year), so he decided to build his own. Meet Index PnP, an open-source pick-and-place machine designed for mass-production volumes typical of crowdfunding projects. The project was introduced launched with the following requirements Automated – no human interaction necessary from attaching the paste-applied board to the machine to having a board ready for reflow Capable of picking and placing components down to 0603 passives Integrated up and down vision for fiducial scanning and on-nozzle component alignment Automatic nozzle tip changer to support a wide range of component sizes Frame and motherboard design capable of future upgrades Mechanical and Electrical support for conveyor belt module […]

Art-Pi STM32H750 Cortex-M7 board supports RT-Thread, mainline Linux

Art-Pi STM32H750 board

I like to browse Linux changelog to learning about new features in the kernel, but also new hardware that made it into mainline Linux, even if only preliminary or partial. And in the just-released Linux 5.13, one board that caught my eye was Art-Pi, powered by an STMicro STM32H750 Cortex-M7 microcontroller without MMU (memory management unit) that was initially designed for RT-Thread real-time operating system. Art-Pi specifications: MCU – STM32H750XBH6 Value Line Cortex-M7 microcontroller @ 400 MHz, with 128KB flash, 16KB D/I cache, 864 SRAM, 64KB+128KB TCM with ECC correction System Memory – 32MB SDRAM Storage – MicroSD card slot, 16 MB SPI flash, 8MB QSPI flash Display – FPC connector for RGB888 displays Connectivity – SDIO WiFi 4 and UART Bluetooth via Ampak AP6212 module USB – 1x USB OTG Type-C port Debugging – On-board ST-LINK/V2.1 via USB-C DBG port Expansion – 2x 40-pin P1 & P2 headers with […]