10.1-inch RPI All-in-One PC review with Raspberry Pi 4

10.1-inch Raspberry Pi PC portrait mode

A couple of months ago I received “RPI All-in-One”, a 10.1-inch touchscreen display for Raspberry Pi boards, listed the specifications, checked out the package content, installed a Raspberry Pi 4 inside the display before booting my new all-in-one (AiO) PC successfully. I’ve now had time to spend more time with the PC/display and see how it performs under various conditions. I also tested HDMI and USB-C input features with a laptop and mini PC. Fan or fanless operation? After updating Raspberry Pi OS, I ran sbc-bench.sh script together with rpi-monitor to see how the Raspberry Pi 4 with 1GB RAM would perform under load with the (noisy) fan enabled.

  No throttling was detected, and the temperature never exceeded 56°C in a room with an ambient temperature of 26°C. I then disconnect the fan, but it turns out the fan can also be easily disabled in the OSD menu […]

Khadas Tea – A MagSafe Hi-Fi headphone amplifier to play lossless audio on smartphones (Crowdfunding)

Khadas Tea magnetic headphone amplifier

From this side of the Internet, Khadas is better known for their single board computer, but the company has also made Hi-Fi audio products starting with the Khadas Tone in 2018 as an add-on board for Khadas VIM/VIM2 SBC, followed by Khadas Tone 2 Pro mini desktop Hi-Fi system in 2020. The latest audio product from Khadas is a smartphone accessory with Khadas Tea being a thin MagSafe-compatible magnetic Hi-Fi headphone amplifier based on aptX HD and LDAC capable Qualcomm QCC5125 Bluetooth SoC and ESS ES9281AC Pro DAC that sticks to the back of your phone. Khadas Tea specifications: Bluetooth Audio SoC – Qualcomm QCC5125 Bluetooth 5.0 audio chipset USB DAC – ESS ES9281AC Pro Amplifier – RT6863D (Buffer Stage) Audio I/O 3.5mm headphone jack Built-in stereo microphone for making and receiving calls over Bluetooth Sampling Rate USB: up to 32bit 384KHz @ PCM, or DSD 256 (Native) Bluetooth: up […]

Reolink Go Plus 4G review – Part 2: A Solar-powered 4G LTE security camera with person & vehicle detection

Reolink Go Plus 4G Review

Last month, I received Reolink Go Plus 4G smart security camera with 4G LTE connectivity, vehicle/human detection support, and powered by a solar panel. In the first part of the review, I did an unboxing, added the camera to the Reolink Android app, and confirmed it worked with my DTAC SIM card. I’ve now installed the camera and had time to test more of its features, so I can report my experience with the security camera. Reolink Go Plus 4G camera and solar panel installation I wanted to use the camera near the gate that’s outside of (reliable) WiFi range. So I found a piece of hardwood to which I attached the mounts of the camera and solar panel… … and attached it to the wall. My current installation works for testing, but it’s not the most secure as the camera is quite visible and only placed a little over […]

Board with 25 RGB LEDs is offered with ESP32-C3 or ESP32-Pico-D4

ESP32-C3 board 25 RGB LEDs

In case you are in need of a tiny WiFI or Bluetooth-connected board with an RGB LED matrix, two have shown up on Banggood with basically the same 25 RGB LED design , except “C3FH4 RGB” board is based on ESP32-C3 RISC-V SoC, while the other, named “PICO D4 RGB“, features ESP32-Pico-D4 SiP (System-in-Package). The boards are cute and the main purpose is probably for decoration/ornament, but I’d imagine if you purchase a few they could also be used as an experimentation/education platform for mesh networking, using the ESP Mesh Development Framework (ESP-MDF) for instance. C3FH4 RGB / PICO D4 RGB board specifications: SoC/SiP C3FH4 RGB board – ESP32-C3FH4 SoC with RISC-V core @ 160 MHz, 4MB flash, 2.4GHz Wi-Fi, and Bluetooth 5 LE with Long-Range support PICO D4 RGB board – ESP32-PICO-D4 system-in-package with ESP32 dual-core Xtensa processor @ 240 MHz, 2.4GHz Wi-Fi and Bluetooth dual-mode, 4MB flash Ceramic […]

10,000 mAh Graphene power bank fully charges in 27 minutes (Sponsored)

Elecjet Graphene power bank

Most power banks are made of Lithium batteries that charge in 3 to 4 hours and are good for around 500 charge cycles. But Elecjet Apollo Ultra is a different beast equipped with a 10,000 mAh Graphene battery that enables fast charging in just 27 minutes and offers a much longer lifespan with over 2,500 charge cycles. In other words that means Apollo Ultra power bank is 5x faster and lasts 5x longer than most lithium-based power banks. Another way to look at it is that this graphene-enhanced 10,000mAh power bank can gather enough power in just 7 minutes to fully charge your phone. It can fast-charge your phone up to three times, charge two devices at once, and passthrough charging lets you charge Apollo Ultra at the same time. Elecjet Apollo Ultra specifications: Battery Capacity – 10,000 mAh or 40 Wh Full Charge Time – 27 minutes USB ports […]

Raspberry Pi UPS HAT takes two 18650 batteries (Crowdfunding)

UPS HAT for Raspberry Pi

Raspberry Pi UPS solutions have been available for years with products like PiJuice Zero, PiVoyager, or LiFePO4wered/Pi+. But the team at SB Components has designed another UPS HAT for Raspberry Pi with a holder for two 18650 batteries. The HAT is designed for 5V operation up to 2.5A, connects with the Raspberry Pi SBC through the I2C bus from the 40-pin GPIO header, and is equipped with a 0.91-inch OLED for information display. UPS HAT for Raspberry Pi specifications: Power Input – 8.4V/2A via DC jack Power Output – 5V up to 2.5A through LDO chip (GPIO header and 2x USB ports) Display – 0.91-inch OLED Host interface – I2C Misc – On/Off switch Battery support 18650 Lithium battery (not included) via holder for two batteries Battery reverse indicator Charging and voltage monitoring via TI INA219 I2C chip Battery voltage balancing with Hycon HY2213 Battery protection IC (Hycon HY2120) Dimensions […]

Newt 2.7-inch wireless display offers high refresh rate with SHARP’s Memory-in-Pixel (MiP) technology (Crowdfunding)

Newt ESP32 IoT Display

Newt is a battery-powered, always-on, ESP32-S2 wireless display with a 2.7-inch display leveraging SHARP’s Memory-in-Pixel (MiP) technology to provide an experience similar to E-Ink displays but with a much faster refresh rate. The wireless display can connect to the Internet to retrieve weather, calendars, sports scores, to-do lists, quotes, and whatever you’d like. Since it is powered by an ESP32-S2 microcontroller you can program with the ESP-IDF framework, Arduino, MicroPython, or CircuitPython. Newt display specifications: WiFi module – Espressif ESP32-S2-WROVER module with ESP32-S2 single-core Xtensa LX7 processor @ 240 MHz with 4 MB flash and 2 MB PSRAM Display – 2.7-inch, 240 x 400 pixel SHARP MiP LCD with “high-contrast, high-resolution, low-latency content with ultra-low power consumption”, reflective mode to eliminate the need for a backlight. USB – 1x USB Type-C port for programming, power, and charging Expansion – I2C Qwiik connector Misc Micro Crystal RV-3028-C7 RTC (45nA power consumption) […]

HUENIT modular robot arm takes 3D printer, laser engraver, suction, AI camera modules (Crowdfunding)

Huenit Robot Arm

Most robot arms are designed to carry and manipulate payloads, but HUENIT modular robot arm is much more versatile as besides a traditional suction module, the robot supports modules such as a 3D printer, laser engraver, pen holder for drawings, and a creator module for let people designed their own. The robot arm can hold payloads of up to 750 grams, have a reach of up to 39 cm without module, supports WiFi and Bluetooth connectivity, and can also optionally be fitted with a 2MP AI camera module based on Kendryte K210 RISC-V processor with built-in AI accelerators. HUENIT specifications: Robot arm 4-axis Payload up to 750 grams Reach – 390mm without module Repeatability – 0.05mm Precision – 0.1mm Speed – Up to 500mm/s Storage – MicroSD card slot USB – 1x USB-C port Wireless – WiFI and Bluetooth Misc – UART, external stepper Power Supply – 24V DC input, […]

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