ODROID XU4 Shifter Shield Review with GPIO compatibility tests posted

August 27th, 2015

ODROID-XU4 Shifter Shield Review @ Mikronauts.com

I recently reviewed Hardkernel’s new ODROID-XU4 Big.little eight core single board computer – and I was very impressed by its performance.

The only real issue was the 1.8V GPIO spread between two connectors with 2.0mm pitch, which is obviously incompatible with all those nice add-on boards designed for Raspberry Pi’s, Banana Pi’s, and other similar SBC’s.

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Click HERE to read my thorough review of the XU4 Shifter Shield

I even tested a few add-on boards designed for the Raspberry Pi with the XU4 Shifter Shield 🙂


PDALib.py v0.90 Python API for Pi Droid Alpha released – and it is RoboPi compatible.

August 25th, 2015

I’ve uploaded the first release version of the Python API for Pi Droid Alpha, and it is compatible with the Python API for RoboPi.

Yep, this means you can start building your robots with Pi Droid Alpha, and when you need a more powerful robot controller, you can move up to RoboPi – and your existing code will run!

Pi Droid Alpha @ https://Mikronauts.com

(click on image for larger version)

The API is extremely easy to use, and will be very familiar to Wiring and Arduino users 🙂

If you are curious about the API:

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If you would like to discuss Pi Droid Alpha, RoboPi, their API, or robots, join our forum!

 


Pi Droid Alpha & Prototyping boards

August 20th, 2015

I am still working on the Pi Droid Alpha user manual and associated Python API, but I’d thought I would update y’all on what I am also working on right now… (and  there be a sale!)

Pi Droid Alpha @ https://Mikronauts.com

Site News

  • Mikronauts ad is in the September 2015 issue of Servo on p.13
  • Pi Droid Alpha new product announcement is in Servo on p.21 (same issue)
  • My ODROID-XU4 Review has received a lot of interest
  • I hope to publish the XU4 Shifter Shield review early next week

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Santa’s helpers have dropped off a box with a nice pre-release quad core ARM SBC, look for a review of it real soon!

Cheaper Shipping!!!

  • I’ve found a freight forwarder to work with, which allows me to offer cheaper shipping to the US – with tracking!
  • Would you believe it is cheaper for me to ship to the US than to Canada??? Weird, eh?
  • I also have somewhat better rates to the UK and UE, but I am still trying improve shipping there

Back-To-School Sale

I remember how painful it was to go back to school, so I decided to put Mikronauts prototyping boards on sale.

  • EZasPi prototyping board for the Raspberry Pi (now $10.95USD+s/h)
  • EZasPi (B) prototyping board for the Raspberry Pi (now $10.95USD+s/h)
  • EZasBone prototyping board for the BeagleBoneBlack (now $12.95USD+s/h)
  • EZasPieProto300 large general purpose prototyping board (now $9.95USD+s/h)
  • EZasPieProto600 large general purpose prototyping board (now $9.95USD+s/h)

The prototyping boards are also available in two and five packs for even greater savings.

VISIT OUR EBAY STORE

 


ODROID-XU4 octal core Samsung Exynos 5422 Review

August 16th, 2015

I’ve finished my ODROID-XU4 Review!

ODROID-XU4 Review @ Mikronauts.com

(click on image for larger version)

The ODROID-XU4 is Hardkernel’s new octal-core ARM single board computer.

The performance is excellent, but for all the details, you should head over and read the review:

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PiDroidAlpha & RoboPi = same Python API

July 30th, 2015

Ok, I can’t sit on this any longer.

Pi Droid Alpha @ https://Mikronauts.com

(Click on image for larger version)

The Pi Droid Alpha Python API is 99% compatible with the RoboPi Python API !!!

This means that you can have a mixture of Pi Droid Alpha and RoboPi based Raspberry Pi robots, and the Python programs you write will work on either platform!

Ok, there are some limitations, due to the different architecture of RoboPi and Pi Droid Alpha, however as long as you keep your servos, PWM outputs, and ultrasonic sensors on pins 0-7, your programs will run the same on both controllers.

This limitation is due to Pi Droid Alpha only having eight servo/PWM/ping capable FlexIO pins with an additional 16 digital I/O only pins, whereas RoboPi has 24 FlexIO pins (made possible by RoboPi’s eight core 32 bit RISC co-processor)

Some of the API may seem a bit familiar to you:

pinMode(), digitalRead(), digitalWrite(), analogRead(), analogWrite(), servoRead() and servoWrite()

along with some less familiar additions like readMode(), readDistance() and more.

readDistance() is not implemented on Pi Droid Alpha yet… however I am working on it.

Elf RoboPi + Raspberry Pi Robot @Mikronauts https://Mikronauts.com/

(RoboPi based Elf robot – click on image for larger version)

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