Monthly Archives: February 2016

Mini CW Keyer / QRSS beacon v1.1

via Dangerous Prototypes


Marko Pavlin has designed a PCB for the CW keyer, he writes:

I designed dedicated PCB for the CW keyer. The project is very similar to the version made on prototyping board.

Here are the updates:
– I added relay and optocoupler for PTT control
– The “CW melody” selection pins have three jumpers for 8 combinations
– The audio output has 1W audio amplifier and RC at the PWM output (work to do in software driver for audio generator)
– USB connector is microUSB female which can be used with any phone charger

Project info at Mare & Gal Electronics site.

Open-source SWD programming adapter

via Dangerous Prototypes


Ethan Zonca from Protofusion writes, “After making the switch from AVR to STM32 microcontrollers, I redesigned my old 6-pin ICSP pogo-programming adapter for SWD. The new design allows programming with pogo pins or a small pin header soldered to the pogo pads for debugging, all with the same cable. The footprint uses surface mount pads only, so it can be placed on even the most compact board layouts.”

More info at project page.

Meet RobotShop: a new Genuino reseller in Canada

via Arduino Blog

This week we’re happy to  introduce a new Genuino Reseller from Canada with Julie Gendron of RobotShop!

Julie GendronRobotshop

- Tell us a bit more about RobotShop

At RobotShop, we specialize in personal and professional robot technology and offer a wide range of robotic products and services in this sector. We have offices in USA, Canada and France. Our vision is to be the world leading source for personal and professional robot technology that help increase the pleasure, knowledge, liberty and security of individuals. We are also committed to promoting and advocating the interest and necessity of robotics use towards positive ends, allowing humanity to attain a better world.

- What’s your company’s super power

Putting robotics at your service!

- What’s your favourite Arduino or Genuino project?

We enjoy Arduino robots and projects from beginners that are starting in robotics. For example this Arduino robot from a beginner on the Let’s Make Robots Blog and forum. We like it because it represents the Arduino and Genuino brand well with a simple and fun “do it yourself” / hobbyist project. This is the meaning of Arduino; for anyone to be able to build a robot or interactive project easily. This is why we help the way we can, by providing Arduino tutorials that can help beginners as well as more advanced Arduino users.


RobotShop Store Website Canada  – FacebookTwitter –  Google+

ATtiny10 Mini Breakout Board

via Dangerous Prototypes

ATtiny10 MiniBreakoutBoard

Dan Watson has designed this very tiny breakout board for the Atmel ATtiny10. He wrote a post on his blog detailing its assembly:

This breakout board is for the ATtiny10 microcontroller. The PCB is 0.25×0.325″ and uses 0.050″ header pins. The board could actually be made smaller, but I ran into the minimum PCB size limit on OSHPark. Despite the tiny size, I was able to include a 100nF bypass capacitor, power LED, and a user LED on pin PB1. That pin is also the clock pin for the programming interface, so it flashed when the board is being programmed.

Project info at The Sync Channel blog.

Raspberry Pi 3

via SparkFun Electronics Blog Posts

In honor of their fourth birthday, Raspberry Pi is celebrating by releasing something special. That’s right, the Raspberry Pi 3 is here! Let’s take a look at the 64-bit goodness baked into this new single board computer.

The form factor and connectors for the Pi 3 are exactly the same as the Pi 2. That being said, it seems that the creators decided to perform a few upgrades. First off, we get a new processor; no longer are we stuck with 32 bits. The new BCM2837 has a quad-core, 64-bit ARMv8 running at 1.2GHz. Additionally, the Raspberry Pi 3 has on-board WiFi and BLE (this is very handy for keeping those USB ports open). Finally, these new features will likely require more power, so we get a new switched power source that supports up to 2.5 amps. Best of all, the Raspberry Pi 3 is officially available for pre-order!

Raspberry Pi 3

$ 39.95

You want all that in table form to make it easier to read? Well then, you got it:

Rasbperry Pi 2 Model B Raspberry Pi 3 Model B
SoC Broadcom BCM2836 Broadcom BCM2837
CPU 32-bit 900 MHz quad-core ARMv7 64-bit 1.2 GHz quad-core ARMv8
USB 2.0 Ports 4 4
Ethernet Yes Yes
Audio Out Yes Yes
Composite Video Out Yes Yes
HDMI Out Yes Yes
CSI Camera Port Yes Yes
DSI Display Port Yes Yes
GPIO Pins 40 40
Storage microSD Card Slot microSD Card Slot
Power 5 V via Micro USB 5 V via Micro USB
Mounting 4x M2.5 mounting holes 4x M2.5 mounting holes
WiFi No Yes
Bluetooth Low Energy No Yes

Looking to get started with the Rasbperry Pi? We’ve got you covered with videos and tutorials:

Raspberry Pi Twitter Monitor

How to use a Raspberry Pi to monitor Twitter for hashtags and blink an LED.

Setting up Raspbian (and DOOM!)

How to load a Raspberry Pi up with Raspbian -- the most popular Pi Linux distribution. Then download, compile, install and run the classic: Doom.

Raspberry gPIo

How to use either Python or C++ to drive the I/O lines on a Raspberry Pi.

The new Raspberry Pi 3 is available for pre-order now, and we anticipate shipping them soon!

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Raspberry Pi 3 on sale now at $35

via Raspberry Pi

Exactly four years ago, on 29 February 2012, we unleashed the original 256MB Raspberry Pi Model B on a largely unsuspecting world. Since then, we’ve shipped over eight million units, including three million units of Raspberry Pi 2, making us the UK’s all-time best-selling computer. The Raspberry Pi Foundation has grown from a handful of volunteers to have over sixty full-time employees, including our new friends from Code Club. We’ve sent a Raspberry Pi to the International Space Station and are training teachers around the world through our Picademy program.

In celebration of our fourth birthday, we thought it would be fun to release something new. Accordingly, Raspberry Pi 3 is now on sale for $35 (the same price as the existing Raspberry Pi 2), featuring:

  • A 1.2GHz 64-bit quad-core ARM Cortex-A53 CPU (~10x the performance of Raspberry Pi 1)
  • Integrated 802.11n wireless LAN and Bluetooth 4.1
  • Complete compatibility with Raspberry Pi 1 and 2
Raspberry Pi 3 Model B

Raspberry Pi 3 Model B

BCM2837, BCM43438 and Raspberry Pi 3

For Raspberry Pi 3, Broadcom have supported us with a new SoC, BCM2837. This retains the same basic architecture as its predecessors BCM2835 and BCM2836, so all those projects and tutorials which rely on the precise details of the Raspberry Pi hardware will continue to work. The 900MHz 32-bit quad-core ARM Cortex-A7 CPU complex has been replaced by a custom-hardened 1.2GHz 64-bit quad-core ARM Cortex-A53. Combining a 33% increase in clock speed with various architectural enhancements, this provides a 50-60% increase in performance in 32-bit mode versus Raspberry Pi 2, or roughly a factor of ten over the original Raspberry Pi.

James Adams spent the second half of 2015 designing a series of prototypes, incorporating BCM2837 alongside the BCM43438 wireless “combo” chip. He was able to fit the wireless functionality into very nearly the same form-factor as the Raspberry Pi 1 Model B+ and Raspberry Pi 2 Model B; the only change is to the position of the LEDs, which have moved to the other side of the SD card socket to make room for the antenna. Roger Thornton ran the extensive (and expensive) wireless conformance campaign, allowing us to launch in almost all countries simultaneously. Phil Elwell developed the wireless LAN and Bluetooth software.

All of the connectors are in the same place and have the same functionality, and the board can still be run from a 5V micro-USB power adapter. This time round, we’re recommending a 2.5A adapter if you want to connect power-hungry USB devices to the Raspberry Pi.

Raspberry Pi 3 is available to buy today from our partners element14 and RS Components, and other resellers. You’ll need a recent NOOBS or Raspbian image from our downloads page. At launch, we are using the same 32-bit Raspbian userland that we use on other Raspberry Pi devices; over the next few months we will investigate whether there is value in moving to 64-bit mode.


We’ll keep updating this list over the next couple of days, but here are a few to get you started.

Are you discontinuing earlier Raspberry Pi models?

No. We have a lot of industrial customers who will want to stick with Raspberry Pi 1 or 2 for the time being. We’ll keep building these models for as long as there’s demand. Raspberry Pi 1 Model B+ and Raspberry Pi 2 Model B will continue to sell for $25 and $35 respectively.

What about Model A+?

Model A+ continues to be the $20 entry-level Raspberry Pi for the time being. We do expect to produce a Raspberry Pi 3 Model A, with the Model A+ form factor, during 2016.

What about the Compute Module?

We expect to introduce a BCM2837-based Compute Module 3 in the next few months. We’ll be demoing Compute Module 3 at our partners’ launch events this morning.

Are you still using VideoCore?

Yes. VideoCore IV 3D is the only publicly documented 3D graphics core for ARM-based SoCs, and we want to make Raspberry Pi more open over time, not less. BCM2837 runs most of the VideoCore IV subsystem at 400MHz and the 3D core at 300MHz (versus 250MHz for earlier devices).

Where does the “10x performance” figure come from?

10x is a typical figure for a multi-threaded CPU benchmark like SysBench. Real-world applications will see a performance increase of between 2.5x (for single-threaded applications) and >20x (for NEON-enabled video codecs).


A project like this requires a vast amount of focused work from a large team over an extended period. A partial list of those who made major direct contributions to the BCM2837 chip program, BCM43438 integration and Raspberry Pi 3 follows: Dinesh Abadi, James Adams, Cyrus Afghahi, Sayoni Banerjee, Jonathan Bell, Marc Bright, Srinath Byregowda, Cindy Cao, KK Chan, Nick Chase, Nils Christensson, Dom Cobley, Teodorico Del Rosario Jr, Phil Elwell, Shawn Guo, Gordon Hollingworth, Brand Hsieh, Andy Hulbert, Walter Kho, Gerard Khoo, Saran Kumar, Yung-Ching Lee, David Lewsey, Xizhe Li, Simon Long, Scott McGregor, James Mills, Alan Morgan, Kalevi Ratschunas, Paul Rolfe, Matt Rowley, Akshaye Sama, Serge Schneider, Shawn Shadburn, Mike Stimson, Stuart Thomson, Roger Thornton, James Tong, James Turner, Luke Wren. If you’re not on this list and think you should be, please let me know, and accept my apologies.

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