$1.80 CH551 Mini Development Board Features 8-bit C51 Core, USB Interface, and I/Os

Last year, WCH (Nanjing QinHeng Corp.)’s launched a CH55x family of microcontroller based on an 8-bit C51 core with a USB interface, and extra I/Os depending on the selected part number Electrodragon is now listing a tiny USB development board based on CH551 for $1.80, and the chip itself sells for as low as 1.60 RMB (0.25 USD) on Taobao. Specifications: MCU – WCH CH551 8-bit C51 micro-controller USB – 1x USB type A port I/Os – 18 through holes exposing all I/Os from the MCU including GPIOs, USB, 3.3V, 5V GND Misc – On-board power led, user LED (P3.0) Power – 5V via USB port (or pin?) You won’t need an external hardware – such as a USB to TTL board – to program the boards since the MCU supports USB. To enter into programming mode,  short connect the two pins in the middle of the board (DL) with […]

FUZE Bluetooth Credit Card is Vulnerable to Hacking over Bluetooth

FUZE-Bluetooth-Credit-Card

FUZE Card is a Bluetooth enabled card with ePaper display that can store up to 30 real credit card. You’d program credit cards into it via Bluetooth Smart (BLE) using a smart phone app, and use it like a normal credit card while paying, after selecting the card you want to use. It’s more convenient than carrying many cards, and more secure since part of the number are hidden (shown as stars ****), so whoever get your card can’t easily make a copy of the information. A problem however is that according to ICE9 Consulting, there’s a security vulnerability that allows credit card numbers to be stolen via Bluetooth: CVE-2018-9119. The full details can be found on ICE9 blog post. They started to make a X-Ray to find out about the main components see (photo below), and the reverse-engineered the Bluetooth protocol using an Android smartphone, and software tools such as Burp […]

DirtyJTAG Firmware Convert $2 STM32 “Bluepill” Boards or ST-Link V2 Clones into JTAG Adapters

DirtyJTAG is a JTAG adapter firmware for cheap STM32 boards like BluePill or equally inexpensive ST-Link V2 clones that was developed to create an  alternative to the cheap – but now obsolete – LPT Wiggler cables, and more expensive USB JTAG probes. You’ll find the source, and documentation on Github. First, you’ll need to flash the firmware using the DFU method or an SWD programmer (for ST-Link) or USB to TLL debug board (for STM32 dev boards), before making the connection to the target board as shown below (for Bluepill). STM32 JTAG PA0 TDI PA1 TDO PA2 TCK PA3 TMS PA4 TRST PA5 SRST You can then use mainline UrJTAG for your newly flashed JTAG adapter. If you prefer OpenOCD, it might eventually be possible to use Versaloon firmware instead on STM32 Bluepill board. Thanks to Zoobab for the tip. Jean-Luc Aufranc (CNXSoft)Jean-Luc started CNX Software in 2010 as a […]

Google Has Made it Harder to Load Google Apps on Uncertified Devices

Cheap TV boxes or development boards that can run Android, are not normally certified by Google, but you can still use Google Apps like the Google Play Store either directly with the manufacturer pre-loading the packages on the device, or manually by installing the packages yourself. According to a report by XDA developers, Google has made it harder to load Gapps on uncertified devices starting from March 16th, and if you try to login on a new custom firmware you may get the message “Device is not certified by Google” when accessing a Google app. The change will apparently only affect newly built firmware , so older firmware should still be able to access Google Play store (TBC). We’ll have to see how it turns out. Google Play Services is said to check ro.build.fingerprint for the build date, but it seems too easy to  work around this, if that’s the […]

Android based Station OS Firmware Focuses on Multimedia and Retro Gaming for ROC-RK3328-CC and Firefly-RK3399 Boards

If you’re interesting in gaming and multimedia, one choice is to run Linux based RetrOrangePi or RetroPie on your favorite development board/SBC, and soon, with the upcoming release of Kodi 18, multimedia and retro gaming will just be an app installation away in Android, and other supported operating systems, since RetroPlayer retro-gaming emulator is part of the latest – and yet-to-be-released – version of Kodi. In the meantime, if you own a ROC-RK3328-CC and/or Firefly-RK3399 board(s), you may want to try Station OS, a firmware based on Android with a focus on 4K video playback and retro gaming. The description claims that Stations OS includes “more than 20 kinds of optimization for video and games, achieve multimedia center, Kodi 4K hardware decoding, game simulator hardware acceleration, real-time cast screen display, network acceleration, perfect Root.” The firmware does not use Kodi directly, but RKMC fork instead with some improvements, and they […]

Ubuntu 18.04 LTS Minimal Image Gets Even Smaller (30MB Compressed)

Sometimes you want to get the smallest image you can get, either because your storage device has limited capacity, you may want a faster boot, oe because you can. In the past, I’ve covered minimal firmware images for Raspberry Pi using Raspbian or the Yocto Project, as well as SliTaz or more recently a minimal Ubuntu 16.04  for ODROID C2/C1+ boards. Minimal images are also popular for containers like docker or LXD. Canonical has released Ubuntu minimal images for several years, and Dustin Kirklan blogged about Ubuntu 18.04 LTS mini images a few days ago, showing the good progress made over Ubuntu 14.04 and 18.04 “Bionic Beaver”, and asking for feedback. The charts above shows the minimal image went from around 62.78 MB (compressed) and 179.67 MB (uncompressed) for Ubuntu 14.04 LTS down to 29.65 MB (compressed) and 77.5 MB (uncompressed). That’s the number of AMD64 images, but ARM64 Ubuntu […]

FOSDEM 2018 Open Source Developers Meeting Schedule

FOSDEM (Free and Open Source Software Developers’ European Meeting) occurs every year on the first week-end of February, where developers meet for two days discussing about open source software projects. FOSDEM 2018 will take place on February 3-4 this year with  652 speakers, 684 events, and 57 tracks, an increase over  last year 608 speakers, 653 events, and 54 tracks. There will be 8 main tracks namely: Community, History, Miscellaneous, Performance, Python, Security and Encryption, Space, and Global Diversity CFP Day. There will also be 33 developer rooms, and since the full schedule is now available, I’ll make a virtual schedule mostly based on sessions from the Embedded, mobile, and automotive, Hardware Enablement, and Internet of Things devrooms. Saturday 3, 2018 09:50 – 10:15 – Turning On the Lights with Home Assistant and MQTT by Leon Anavi In this presentation you will learn the exact steps for using MQTT JSON […]

Xiaomi Mi A1 (Android One) Smartphone Gets Android 8.0 OTA Firmware Update

Google gave a new life to its Android One program last year with products such as Xiaomi Mi A1 smartphone, which also happens to be my main phone. One of the main benefits of getting an Android One smartphone is the promise to get regular security updates, as well as upgrades to the latest version of Android for at least 2 years after launch. I’ve been keeping track of updated in my long term review of Xiaomi Mi A1, and since I received it in mid-October, I got 6 security updates, or about two such update per month. However, Xiaomi also promised Android 8.0 Oreo update by the end of the year (2017), and as the year drew to a close I was not confident the company would fulfill this promise.   But around mid-afternoon on December 31st, I received a notification about “Android Update (Oreo)”, so I went there, […]

EmbeddedTS embedded systems design