Holtek_HT48R002
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What’s the Cheapest MCU? My Try: Holtek HT48R002 8-bit MCU Selling for $0.085

Somebody asked what was the cheapest MCU (Microcontroller) available on Google+, so I thought it would be fun to find the cheapest one regardless of specifications. It turns out there an older thread with this very question on StackExchange, and at the time (2011) Microchip PIC10F200 8-bit MCU with 256B RAM in SOP-23 package was the cheapest one among the answer, and somehow the price has not changed as it’s still $0.32 per unit for 1k orders. Not a bad price, but back in the days when I wrote on CD and DVD players, we had some price pressure from customers, so we looked for a cheaper microcontroller, and ended up using Holtek because of the competitive pricing. We suffered a bit during development due to incomplete documentation but eventually did the job. Anyway, I went to the Holtek website and found a “cost-effective I/O MCU” category, and HT48R002 appears […]

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Samsung JerryScript is a Lightweight Open Source JavaScript Engine for the Internet of Things

In the old days, micro-controller programming was all done in assembly or C, but in recent years higher level languages, included interpreted ones such as Python and JavaScript, have made their ways into MCUs with projects such as MicroPython or Espruino (JS) often running on STMicro STM32 ARM Cortex M micro-controllers, but also other platforms such as ESP8266. As I browsed through the Embedded Linux Conference Europe 2016 schedule, I discovered that Samsung worked on it own implementation of a JavaScript engine for the Internet of Things: JerryScript. It is a full implementation of ECMAScript 5.1 standard written in C that can run on micro-controllers with less than 64KB RAM, and less than 200KB storage (160KB footprint with ARM Thumb-2 compilation). JerryScript is comprised of two main components: Parser and Virtual Machine (VM), with the parser performing translation of input ECMAScript application into byte-code than is then executed by the Virtual […]

ArmSoM RK3588 AIModule7 NVIDIA Jetson Nano-compatible SOM
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Embedded Linux Conference & IoT Summit Europe 2016 Schedule

Embedded Linux Conference & IoT summit 2016 first took place in the US in April, but the events are now also scheduled in Europe on October 11 – 13 in Berlin, Germany, and the schedule has now been published. Even if you are no going to attend, it’s always interesting to find out more about the topic covered in that type of events, so I had a look, and created my own virtual schedule with some of the sessions. Tuesday, October 11 10:40 – 11:30 – JerryScript: An Ultra-lightweight JavaScript Engine for the Internet of Things – Tilmann Scheller, Samsung Electronics JerryScript is a lightweight JavaScript engine designed to bring the success of JavaScript to small IoT devices like lamps, thermometers, switches and sensors. This class of devices tends to use resource-constrained microcontrollers which are too small to fit a large JavaScript engine like V8 or JavaScriptCore. JerryScript is heavily […]

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Development Resources for Realtek “Ameba” RTL8710, RTL8711, and RTL8195 WiFi SoCs

We were made aware of a potential ARM based ESP8266 competitor last week with Realtek RTL8710 WiFi modules selling for about $3.5 shipped per unit, and under $2 per unit for larger orders (100+ pieces). Hardware is good, but for a platform to be successful, or even just useful, you also need software support. So I started doing some research into IoT-Tech BBS and asked ICStation for an “SDK” for the module they sold. I ended up on this forum post providing an “Realtek RTL8710 SDK” via Baidu (password: brwp), which turned out to be about the same as the Google Drive link provided by ICStation, and only contain minimal documents, as well as cracked Windows IAR Embedded Workshop and JLink tools. There are also some more technical details in Chinese only in another forum post, and well as B&T RTL8710 module datasheet (PDF). However, if you don’t read Chinese […]

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QINTAIX Q912 Android TV Box is Powered by Amlogic S912 Octa-core SoC

I published pictures of Amlogic S912 TV box boards just over a month ago, and it appears companies have started to take orders from resellers for Amlogic S912 TV boxes with products such Videostrong KM8 Pro, or the one I’m going to cover in this post: QINTAIX Q912. QINTAIX Q912 specifications: SoC – Amlogic S912 octa-core ARM Cortex A53 processor @ up to 2.0GHz with ARM Mali-820MP3 @ up to 750MHz System Memory – 2GB  DDR3 Storage – 8GB or 16GB eMMC flash + micro SD slot Video Output – HDMI 2.0 and AV ports Audio Output – HDMI, AV, and optical S/PDIF Video codecs – VP9 profile 2 up to 4K @ 60 fps, H.265 MP-10@L5.1 up to 4K 60fps, H.264 AVC up to 4K @ 30 fps, H.264 MVC up to 1080p60, MPEG-4, WMV/VC-1 SP/MP/AP,  AVS-P16(AVS+)/AVS-P2 JiZhun Profile, MPEG-2 MP/HL, MPEG-1 MP/HL, and  RealVIDEO 8/9/10 all up to […]

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Mini M8S II TV Box (Amlogic S905X) Review – Part 2: Android 6.0 Firmware

Mini M8S II is one of the first Amlogic S905X TV box to hit the market, with the new processor adding 4K VP9 hardware video decoding and HDR support compared to Amlogic S905 processor. I’ve already taken pictures of the device and torn it apart to check its hardware & thermal design in the first part of the review, and in the second part, I’ll boot it up, check performance, features, and video playback capabilities. First Boot, Settings and First Impressions I plugged-in a USB hard drive into one USB port, but since the device only fetures two ports, I had to use a USB hub to connect two RF dongles for MINIX NEO A2 Lite air mouse, and Tronsmart Mars G01 gamepad, as well as a USB keyboard to take screenshots. I completed the hardware setup by connecting HDMI & Ethernet cables before starting the device by connected the […]

Rockchip RK3568, RK3588 and Intel x86 SBCs and SoMs in 2025
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RuuviTag Open Source Bluetooth & NFC Sensor Beacon is Based on Nordic Semi nRF52832 SoC (Crowdfunding)

I’ve recently featured Puck.js Bluetooth 4.2/5.0 Beacon on CNX Software, but there’s another similar option with RuuviTag, also powered by the latest Nordic Semi nRF52832 ARM Cortex-M4 SoC, and RuviiTag+ version that includes multiple sensors: 3-axis accelerometer, and temperature, humidity, and pressure sensor. RuuviTag & RuuviTag+ specifications: SoC – Nordic Semi nRF52832 ARM Cortex-M4F micro-controller @ 64 MHz with Bluetooth Smart and NFC Connectivity Bluetooth 4.2 Smart, Bluetooth 5.0 Ready; over 500 meters line of sight range (with -4dBm power); up to 1.4 km with +4 dBm Integrated NFC antenna Expansion – 8x through holes with 6x GPIOs, and 2x power signals Sensors On-chip temperature sensor RuuviTag+ – Bosch BME280 environmental sensor (pressure, humidity, and temperature), STMicro LIS2DH12 3-axis accelerometer Misc – User/reset button, 2x LEDs, 10-pin SWD debug connector Battery – CR2450 / CR2477 battery up to 10 years depending on application Dimensions – N/A Temperature Range – -40°C […]

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AsiaRF AP7620-MPE-1 OpenWrt WiFi Router mini PCIe Card is Made for Computers and Embedded Systems

There are many mini PCIe WiFi modules on the market, but what AsiaRF provides with AP7620-MPE-1 is a little different, as it’s a router based on Mediatek MT7620A fitted into a mini PCIe card to be plugged inside a computer or embedded system. AP7620-MPE-1 mini PCIe card specifications: SoC – Mediatek MT7620A MIPS 24KEc CPU @ 580MHz with 2T2R WiFi 802.11 b/g/n (but board only supports 1×1) 802.11ac WiFI Chipset – Mediatek MT7612E AC1200 chipset limited to 433 Mbps [Changed to MT7610E chipset @ 433 Mbps] System Memory – 64 or 128MB DDR2 Storage – 8 or 16MB SPI flash WiFI features Security: 64/128-bit WEP, TKIP, WPA, WPA2, AES; 802.1X Authentication with RADIUS Client Multi-mode support: Access Point/Client mode Support Multiple SSIDs mini PCIe interface with USB2.0 to Ethernet, UART, 8 GPIOs, 1.5V, 3.3V and ground Dimensions – 60 x 41.5 mm (bigger than standard mini card: 50.95 x 30 […]

Boardcon CM3588 Rockchip RK3588 System-on-Module designed for AI and IoT applications