Language Selection

English French German Italian Portuguese Spanish

Open Hardware: Adafruit, Arduino, Librem 5 and More

Filed under
Hardware
  • RFCat N32 Long Range nRF52832 Bluetooth Board Delivers 30x the Transmission Power with an Amplifier

    Bluetooth 5.0 has two main new features: high speed (2Mbps) and long-range. But as we’ve seen in our nRF52840 vs nRF52832 vs nRF52810 comparison is that only nRF52840 supports Bluetooth 5.x long range.

    Bluetooth 5 long range is achieved with two new lower bit rates of 500 kbps and 125 kbps. So what do you do if you’d like a longer range and keep using the higher bit rates? You add a power amplifier and LNA to your board, and that’s exactly what Nikolaj (RFCat) did with RFCat N32 board based on Nordic Semi nRF52832 wireless SoC.

    [...]

    The board is pre-loaded with Adafruit NRF52 bootloader supporting OTA, FreeRTOS, and Arduino. Source code and samples are available on Github. The Arduino library is based on Adafruit nRF52 Arduino Core and for some reason, only shared as a zip file (rfcat.zip in the Github repo).

  • Meet MrK_Blockvader, a little mobile robot that’s lots of fun

    One of the simplest ways to make a mobile robot involves differential steering, where two wheels move at different speeds as needed to turn and a ball caster keeps it from tipping over. The MrK_Blockvader is an excellent take on this type of bot — demonstrated in the first clip below — featuring a nice blocky body comprised out of 3D-printed parts, RC truck wheels driven by tiny gear motors, and an integrated roller on its back.

    The MrK_Blockvader is controlled via an Arduino Nano, along with an nRF24 breakout that allows it to receive signals from a radio transmitter unit. The build includes LED lighting as well as a piezo buzzer for all the beeps and boops. It can also take advantage of various sensors if necessary.

  • PoE FeatherWing Brings PoE, Unique MAC Address to Adafruit Feather Boards (Crowdfunding)

    After the launch of Microchip SAMA5 powered Giant Board last year, Silicognition LLC (Patrick Van Oosterwijck) is back with another Adafruit Feather compatible board.

    PoE FeatherWing is an expansion board that adds PoE support to Adafruit Feather board and can handle up to 4 Watts of power. The expansion board also comes with a built-in globally unique MAC address. It’s similar to the official Ethernet FeatherWing, but with the addition of PoE and a unique MAC address.

    [...]

    Since the board re-uses the same WIZnet W5500 Ethernet controller, it is fully compatible with existing software written for the Adafruit Ethernet FeatherWing meaning it can easily be programmed with Arduino or CircuitPuthong using standard libraries.

  • Tiny modules unlock i.MX8M Mini and Nano

    Keith & Koep’s Linux-friendly 48 x 32mm “Myon II” and “Myon II Nano” modules feature the i.MX8M Mini and Nano with 8GB and 4GB LPDDR4, respectively, along with eMMC expansion, GbE, MIPI-DSI and -CSI, and up to -40 to 85°C support.

    Germany-based Keith & Koep has added two new members to its 48 x 32 x 4.2mm Myon family of compute modules. While the Myon I runs Linux on a Snapdragon 4.0, the pin-compatible Myon II and Myon II Nano integrate NXP’s i.MX8M Mini and i.MX8M Nano, respectively. The company previously showcased the i.MX8M Mini in its larger, SODIMM-style Trizeps VIII Mini, which was announced last year along with an i.MX8M-based Trizeps VIII module.

    [...]

    Since Keith & Koep does not post press releases, we are not sure when the Myon II arrived, but they are listed as “new” and we have yet to see any coverage of the modules. Both the Myon II and Myon II Nano support Linux Kernel 4.14, Android 9, and Windows 10 IoT Core.

  • Librem 5 Dogwood Update 3

    The battery shipping with dogwood is 3600mAh, roughly 80% more battery than previous batches. Combined with early kernel optimizations usage is now measured in multiple hours, and with additional kernel work will continue to see leaps forward.

    A diffuser has been added between the screen and the indicator light. This makes notifications easier to notice at extreme viewing angles and overall better appearance.

    The volume buttons have become a volume rocker increasing usability.

    In previous versions, the headphone jack was recessed and not centered. In Dogwood it’s now flush with the top of the phone and centered in the frame.

More in Tux Machines

How Librem 5 Solves NSA’s Warning About Cellphone Location Data

The NSA has published new warnings for military and intelligence personnel about the threats from location data that is captured constantly on modern cellphones (originally reported by the Wall Street Journal). While privacy advocates (including us at Purism) have long warned about these risks, having the NSA publish an official document on the subject helps demonstrate that cellphone tracking is a real privacy and security problem for everyone. We have been thinking about the danger of location data on cellphones for a long time at Purism and have designed the Librem 5 from scratch specifically to address this risk. The NSA document describes and confirms a number of the threats I wrote about almost a year and a half ago when I introduced our “lockdown mode” feature on the Librem 5–a feature that disables all sensors on the Librem 5. In this post I’ll describe the threats the NSA presents in their document and how we address them with the Librem 5. Read more Also: Librem 5 Web Apps

Latest Linux Magazine (With Paywall)

Android Leftovers

Leftovers: LibreOffice, GNU Projects

  • [Haiku] July 2020 Activity Report

    Welcome to the July, 2020 Activity Report for the Haiku project!

    This report covers hrev54370 through hrev54484.

  • Neo Colibre for Maximum Productivity

    Having fun everyone. I wish you are all doing good in this tough time. It was Adolfo who complaint about Colibre's failure to accomplish WCAG contrast guideline. He said the colors are too faint and everything looks washed out. Furthermore, MS Office 365 has since moved those colors to a brand new monoline style iconography. See this bug report for details So I took the chance to update this Windows default icon theme. Luckily, the icon theme comes with SVG version, I can easily use bash script to automate a neccessary color conversion, and take the rest manually. In one month, I finally managed to finish this "Neo" Colibre. Hopefully this will benefit the largest LibreOffice user platform (approximately more than ~80%).

  • Simulated Animation Effects Week#9

    Last week I’ve started by working on support for Custom Shapes. At first I didn’t how could I get the related geometry information about Custom Shapes. Upon asking on IRC, mst (Micheal Stahl) directed me to SdrObject class. Inspecting this class, found out a child of it that handles Custom Shapes called SdrObjCustomShape had a function SdrObjCustomShape::GetLineGeometry was returning exactly what I’ve wanted in the first place a B2DPolyPolygon! So I went ahead and created an implementation that if the shape type is CustomShape, it got corresponding SdrObject using it’s XShape and casted the SdrObject* to an SdrObjCustomShape* and got the B2DPolyPolygon from that. Then it triangulated this polygon using basegfx::triangulator::triangulate, and added resulting collection of triangles to a box2d body.

  • Best Photoshop alternatives 2020

    GIMP boasts a huge number of features and functions that rival Photoshop. There’s also a huge community of developers and artists who have created a wide array of plugins, making this a highly adaptable program. If you desire a specific feature, there’s probably an add-on for it. 

  •        
  • AMD HSA Offloading Support Dropped From The GCC Compiler

    There didn't appear to be much usage ever out of the AMD HSA (Heterogeneous System Architecture) support within the GCC compiler and hadn't been maintained in a while so now has been wiped out of the GNU Compiler Collection.

  • Mike Blumenkrantz: Another Minor Annoyance

    Once more going way out of order since it’s fresh in my mind, today will be a brief look at gl_InstanceID and a problem I found there while hooking up ARB_base_instance. gl_InstanceID is an input for vertex shaders which provides the current instance being processed by the shader. It has a range of [0, instanceCount], and this breaks the heck out of Vulkan.