Add an audio jack to Raspberry Pi 400 with the DACBerry 400

The Raspberry Pi 400 is a keyboard PC with most of the features of Raspberry Pi 4 SBC, with one of the exceptions being the lack of AV port. But you can now add a 3.5mm audio jack to the Raspberry Pi 400 through the DACBerry 400 S expansion board that connects to the 40-pin GPIO header. It’s a neater way than using a cheap USB audio dongle with microphone and headphone jacks, as it takes less space, and does not occupy any of the USB ports from the Raspberry Pi 400, and it does not prevent you from using the GPIO header.  It’s also better suited for headphones with both microphone input and analog stereo audio output into a single jack, and probably comes with better audio quality than the low-cost USB dongles. DACBerry 400 S (DBR400S) specifications: Gold-plated 3.5mm headset/headphone jack (mic in – stereo out) DAC SNR […]

UDOO KEY ESP32 & RP2040 board launched for $4 (Crowdfunding)


UDOO is known for its x86 boards that embed an Arduino compatible MCU, but the UDOO KEY is different, as it does without an Intel or AMD processor, and instead, combines Raspberry Pi RP2040 microcontroller with Espressif ESP32 WiFi & Bluetooth WiSoC. As we noted in the past combining Raspberry Pi Pico/RP2040 with ESP32 does not make a lot of sense in most cases, but here’s the UDOO KEY will be offered for just $4 for the first 1,000 units, so they’ll basically throw the ESP32 for free since it’s the same price as one Raspberry Pi Pico, before eventually selling the device for $20. UDOO KEY specifications: MCU- Raspberry Pi RP2040 dual-core Arm Cortex-M0+ microcontroller @ 133 MHz with 264KB of on-chip SRAM Storage – 8MB QSPI Flash for RP2040 Wireless module – ESP32-WROVER-E with ESP32-D0WD-V3 dual-core WiFi + Bluetooth SoC, 16MB SPI flash, and 8MB PSRAM Sensor – […]

Fujitsu introduces Wirepas Massive USB dongle for location tracking, IoT mesh networking

Fujitsu Wirepas Massive USB Dongle

I was first introduced to Wirepas Massive mesh networking a few days ago when I covered Solidrun Solidsense N8 IoT Compact Wirepas Massive gateway comprised of an NXP i.MX 8M Nano processor running Linux and a module based on Nordic Semi nRF52832 wireless MCU handling Wirepas Massive through its 2.4 GHz radio. It turns out there’s an easy way to add the new mesh networking technology to existing gateways: USB dongles. Fujitsu has launched the FWM8BLZ09x Wirepas Massive USB dongle family, based on the more recent nRF52833 SoC, with Anchor, Tag, and Sink models. Fujitsu FWM8BLZ09x specifications: USB Dongle Types Anchor – FWM8BLZ09P Tag – FWM8BLZ09T Sink – FWM8BLZ09S Wireless MCU – Nordic Semi nRF52833-CJAA Cortex-M4 microcontroller @ 64 MHz with  8 KB RAM, 512 KB Flash, 2.4 GHz radio Connectivity Wirepas Massive mesh networking Transmit power – +8dBm max. Carrier frequency – 2,400MHz to 2,483.5MHz Modulation – GFSK Symbol rate […]

ANAVI Gardening uHAT adds soil and other sensors to Raspberry Pi (Crowdfunding)

ANAVI Gardening uHAT

We’ve been covering and reviewing ANAVI open-source hardware boards for several years now, either standalone boards based on ESP8266, or add-on boards for Raspberry Pi. The  ANAVI Gardening uHAT is the latest board from Leon Anavi. It is a micro HAT designed for Raspberry Pi Zero to Raspberry Pi 4 SBCs that offers interfaces for soil sensors and other environmental sensors allowing measurements of soil moisture, atmospheric pressure and humidity, temperature with a waterproof sensor, and light intensity for gardening applications. ANAVI Gardening uHAT key features and specifications: Compatibility – Any Raspberry Pi board with a 40-pin GPIO header Storage – EEPROM for uHAT compliance 2x 3-pin headers for capacitive soil moisture sensors connected to Microchip MCP3002 ADC chip 3-pin One-wire terminal block for a waterproof temperature sensor 2x 4-pin I²C headers for additional sensors 10-header with GPIO pins for controlling irrigation systems and peripherals Misc – 2x user LEDs,  […]

Raspberry Pi smart audio devkit features AISonic IA8201 DSP, microphone array

AISonic-Raspberry Pi Development Kit

Knowles AISonic IA8201 Raspberry Pi development kit is designed to bring voice, audio edge processing, and machine learning (ML) listening capabilities to various systems, and can be used to evaluate the company’s AISonic IA8201 DSP that was introduced about two years ago. The kit is comprised of three boards with an adapter board with three buttons connecting to the Raspberry Pi, as well as the AISonic IA8210 DSP board itself connected via a flat cable to a microphone array. Knowles AISonic Raspberry Pi development kit Knowles did not provide the full details for the development but says it enables wake-on-voice processing for low latency voice UI, noise reduction, context awareness, and accelerated machine learning inferencing for edge processing of sensor inputs. Some of the use cases include Low Power Voice Wake to listen for specific OEM keywords to wake the host processor, Proximity Detection when combined with an ultrasonic capable […]

PiKVM v3 Raspberry Pi HAT offers KVM over IP on the cheap (Crowdfunding)

PiKVM v3

Last December, we wrote about the inexpensive DIY Pi-KVM board to add KVM over IP to the Raspberry Pi board mentioning PiKVM v3 was in the works with extra features such as onboard ATX power control. It turns out PiKVM v3 HAT has been on Kickstarter for about a month and raised close to $600,000 US from over 2,500 backers with just about two days to go at the time of writing. PiKVM v3 hardware features and specifications: Video & audio capture port – 1x HDMI input up to 1080p50 MIPI CSI-2 interface to Pi to visualize HDMI input USB 1x USB-C console port 1x USB-C power input port USB-OTG pins USB-C OTG port doing the emulation of a USB keyboard, mouse, Virtual CD-ROM or USB Flash Drive, USB-Ethernet, USB-Serial port, etc… Console – RJ45 console port Debugging – UART access pins Expansion SPI and an extra GPIO for the […]

$25 “Raspberry Pi 3 mini” board comes with a camera interface, USB & I/Os headers

TPCast-VR Raspberry Pi 3 Mini

TPCast-VR, aka “Raspberry Pi 3 mini”, is a compact board based on Broadcom BCM2837 quad-core Cortex-A53 processor, and that should come as part of Element14’s Raspberry Pi customization program, just like the custom Raspberry Pi 3 SBC with eMMC flash designed for laundry gateways that I noticed a few months ago. The board was initially integrated into the power box of the TPCAST Wireless Adaptor for HTC Vive and Oculus Rift virtual reality headsets, but eventually found its way into other applications notably FPV drones, and it’s now sold separately, as we’ll see further below. I found about the board via a tweet from Will Whang who purchased it for under $20 at the beginning of the year, and discovered the connection with the TPCast wireless adapter. TPCast-VR board specifications: SoC – Broadcom BCM2837 quad-core Cortex-A53 processor @ 1.2GHz with Videocore IV GPU System Memory – 1GB RAM Storage – […]

OpenNCC Nighthawk – A face blurring AI camera based on Myriad X VPU

OpenNCC Nighthawk Myriad X AI camera

We’ve just written about OpenCV Ai Kit Lite computer vision camera based on Intel Myriad X VPU, and OpenNCC Nighthawk is another such programmable camera based on the Intel AI accelerator, but with an IR filter for night vision, and working with OpenNCC-SDK notably supporting real-time face blurring for enhanced privacy. OpenNCC Nighthawk specifications: VPU – Intel Movidius Myriad X MA2085 up to 4 TOPS RAM – 8 Gbits (1GB) LPDDR4 Camera 2MP camera up to 1920 x 1080 @ up to 30fps ~114° Field of View (DFOV) 2.2mm focal length Lens TTL (through the lense) – 24mm Mount – M12 x 0.5mm thread size Day&Night IR Filter – Solenoid excitation type, automatically switch between 0.1~2 lux IR LED – 850nm up to 5m Output Data format – YUV420, YUV422, MJPG, H.264 Misc – Reset, GPIO Host Interface – USB 3.1 TYPE-C port Temperature Range – 0°- 50° The camera […]