OpenMV Cam H7 MicroPython Machine Vision Camera Launched on Kickstarter

OpenMV CAM H7

OpenMV team has launched an upgrade to their popular OpenMV CAM M7 machine vision camera, with OpenMV CAM H7 replacing the STMicro STM32F7 micro-controller by a more powerful STM32H7 MCU clocked at up to 400 MHz. Beside having twice the processing power, the new camera board also features removable camera modules for thermal vision and global shutter support. OpenMV CAM H7 camera board specifications: MCU – STMicro STM32H743VI Arm Cortex M7 microcontroller @ up to 400 MHz with 1MB RAM, 2MB flash. External Storage – micro SD card socket supporting up to 100 Mbps read/write to record videos and store machine vision assets. Camera modules Omnivision OV7725 image sensor (default) capable of taking 640×480 8-bit Grayscale /  16-bit RGB565 images at 60 FPS when the resolution is above 320×240 and 120 FPS when it is below; 2.8mm lens on a standard M12 lens mount Optional Global Shutter camera module to capture high quality grayscale images not affected by motion blur Optional …

Support CNX Software – Donate via PayPal or become a Patron on Patreon

How to Make a Low Cost DIY SD Card Duplicator

If you have to duplicate many SD cards for example to boot Raspbian on multiple Raspberry Pi board, one option is buy one of those SD card duplicators, but the problem is that they are not really cheap, for example the Systor 1-to-7 cards model sells for $540. Bob Brown, a retired senior lecturer, is now teaching K-12 students how to get started with Raspberry Pi boards, and must prepare bootable SD cards for his class. In order to save time, a duplicator would have been nice, but the price is too high, so instead he went with a DIY solution. You’ll first need some hardware, including a powered USB hub with the number of cards you want to duplicate, and corresponding SD card reader, and a larger micro SD card to hold Raspbian and/or other operating systems (optional, only for Raspberry Pi based duplicator). Mr. Brown made a 10-port SD card duplicator (1-to-9) for just under $100. One the …

Support CNX Software – Donate via PayPal or become a Patron on Patreon

MINIX NEO U9-H TV Box Gets Android 7.1 Firmware

MINIX-NEO-U9-H-Android-7.1-Nougat

MINIX NEO U9-H is generally considered one of the best Android TV boxes if you are after an Android experience, as opposed to a pure Android TV experience. I found the firmware solid and performing on very capable hardware when I reviewed the device in 2017 although there were a few bugs here and there for the version of the firmware I tested. The device is still the main TV box model sold by MINIX, but so far, you had to run the older Android 6.0 OS. The good news is that you can now upgrade your box, if you wish to do so, to a more recent Android 7.1 operating system. There’s no specific changelog for the release, and you can find Android 7.1 for MINIX NEO U9-H on MEGA.An important caveat is that it’s not an OTA update, so you’d have to use USB Burning Tool – also included with the firmware – to flash the new version …

Support CNX Software – Donate via PayPal or become a Patron on Patreon

Flashing Firmware to Rockchip Devices in Linux with rkdeveloptool Open Source Utility

Rockchip rockusb mode

It’s been possible to flash firmware to Rockchip devices in Linux with upgrade_tool command line tool for many years, but the utility is closed-source and only supports “RK Firmware” files that are also used for OTA firmware updates, but not “raw firmware” that you’d flash directly to micro SD cards for example. This week-end as I played with ROC-RK3328-CC board, I encountered some instability issues with micro SD cards, so I instead relied on an eMMC flash module. The only problem was that Firefly Team only releases “raw firmware” files, so I was unable to use upgrade_tool, and instead found out rkdeveloptool  open source utility was used to flash raw firmware images in Firefly’s Wiki. The first step is to connect a male to male USB  Type A cable (like that one on eBay)  between the board and the host computer, and connect a USB power adapter to the board. At least that’s what I had to do here, because …

Support CNX Software – Donate via PayPal or become a Patron on Patreon

SySTOR (Micro) SD Card Duplicators Can Handle Up to 200 SD Cards

SySTOR 1-to-7 SD Duplicator

So this week-end, I started to play with ROC-RK3328-CC (Renegade) board that I received from T-Chip / Firefly-Team and as always, I used Etcher to flash the firmware images to micro SD cards. Once flashing is complete, you’ll get a screen mentioning Etcher Pro, a standalone hardware solution allowing to duplicate the content of one micro SD card to 16 other cards. That’s very interesting if you need to duplicate many cards for a project, but the only problem is that the device is not available just yet. So I thought such equipment must already exist and indeed, a company called SySTOR offers such systems able to duplicate one (micro) SD card to up to 199 other (micro) SD cards. Some of the specifications & key features of the system: Processor – Multi-core processor System Memory – 256 MB DDR3 Capacity – Various models from 4 to 200 micro SD card / SD card slots allowing the duplication of one …

Support CNX Software – Donate via PayPal or become a Patron on Patreon

Xiaomi Mi Box Gets Android 8 Oreo Firmware Update

Xiaomi Mi Box Android 8.1 Launcher

Xiaomi Mi Box US is one of the recommended TV boxes if you want a pure  – and official – Android TV experience at an affordable price. However, updates to the latest version of Android has been slow, and until recently the device was running Android TV 6.x (Marshmallow) only, despite Android 8 being released in August 2017, and Nougat a year ealier. But according to reports from reddit users, Xiaomi Mi Box has finally gotten an OTA upgrade to Android 8.x Oreo. Some of the changes include support for Google Assistant, the new Android Oreo launcher for Android TV,  and other new features introduce in Marshmallow and Oreo. More geeky users reported Linux has also been updated to version 4.9.54, and Project Treble is installed with should allow for more timely firmware updates in the future, although without seamless upgrade support. The Android Oreo upgrade has been reported in several country from the US & Canada, to France in …

Support CNX Software – Donate via PayPal or become a Patron on Patreon

YouTube Streams 1 & 2 Update, Plus Quick Fix for Uneven X Gantry

3D-Printer-X-Gantry-Fix

Hey Karl here with an update on the YouTube Live streams from last week. Live Streams Update The 1st stream went about as well as I expected….Not very well. I was really nervous and I broke the live link that was posted on here at the last minute. My whole reasoning for the Livestream was to show the processes in real time and not do too much footwork ahead of time. On the first one I was planning on migrating from Marlin 1.1.6 to Marlin 1.1.8 but I had already done lol… So I ended up migrating to the bugfix branch which presented additional challenges. Overall it was successful and I hope I conveyed the process. I was able to get it to print but I ended up going back to 1.1.8 due to some error in the bugfix branch that caused weird jittery movement. I will in the future prepare more. 😀 Second was better but not without glitches. …

Support CNX Software – Donate via PayPal or become a Patron on Patreon

$10 H801 WiFi RGB LED Controller Supports Sonoff-Tasmota Open Source Firmware

H801 WiFi LED Controller

This week-end, I played with ANAVI Light Controller, an open source hardware solution based on ESP8266 used control 12V RGB LED strips. The board has the advantage of being open source with KiCad schematics, Arduino firmware, and HTML5 server program available, so easy to get started and modify the features as you see fit, and it also supports external I2C sensors via three headers. That’s a low volume project made in Eastern Europe and as a result the board costs $25, so I was shortly made aware there were cheaper solution, and if you are ready to mess around a little bit, H801 WiFi controller appears to be one of the most interesting solution as it sells for under $10 shipped on Aliexpress or eBay, and is officially supported by Sonoff-Tasmota open source firmware. H801 specifications: Connectivity – 802.11 b/g/n WiFi (2.4GHz) with about 10 meter range Output – 5x PWM (R, G, B, W1, W2) each up to 4A, …

Support CNX Software – Donate via PayPal or become a Patron on Patreon