Archive for the 'Robots' Category

Introducing Hobbit, Elf’s younger Brother! (2WD Raspberry Pi based Robot)

Thursday, April 21st, 2016

I think Elf was getting lonely, so I built a younger brother for him.

Hobbit @ https://Mikronauts.com
(Click on image for larger version)

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Hobbit is based on Pi Droid Alpha, which not only incorporates a motor driver, but also avoids the costly eight core RISC microcontroller used by RoboPi – while preserving a lot of 5V digital I/O and providing an eight channel ten bit analog to digital converter for connecting analog sensors.

I will keep updating the Hobbit article as I add more software and hardware features – and the Elf article will also be updated soon 🙂

New pure Python library for RoboPi

Tuesday, April 19th, 2016

I’ve been working on a new Python library for RoboPi.

Raspberry Pi 2 Model B Review @ https://Mikronauts.com

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I expect to have it uploaded by Monday – I had to post because I was happy that I finally finished writing it 🙂

PiDroidAlpha PDALib.py bug fix uploaded

Thursday, April 14th, 2016

Raspberry Pi Zero Review @ Mikronauts.com
(click on image for larger version)

I’ve uploaded a new version of PDALib.py (RoboPi compatible library) to the Pi Droid Alpha product page.

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The problem turned out to be some SPI access code in the library that opened the SPI driver – but never closed it. Ooops.

My new easy PWM motor control for RoboPi and PiDroidAlpha Python libraries will also be published real soon now 🙂

Serving Raspberry Pi #4 in Servo April 2016

Monday, April 4th, 2016

Servo April 2016 - Serving Raspberry Pi #4 - Sensors
(click on image for larger version)

This month, in “Serving Raspberry Pi #4” (pages 30-34) I discuss popular sensors that can be used on Raspberry Pi based robots.

I recommend Servo Magazine to anyone interested in robotics!

Two robot controllers for Raspberry Pi:

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Bill

p.s.

You can also find a Mikronauts ad on Page 46 of the April issue

 

Raspberry Pi 3 with RoboPi – works great!

Saturday, March 12th, 2016

It took a bit of fiddling due to changes with the serial port… but

RoboPi on Raspberry Pi 3 @ https://Mikronauts.com
(click on image for larger version)

RoboPi works great with the new Raspberry Pi 3!

Changes needed to get it running:

  • add ‘force_turbo=1’ to /boot/config.txt as per forum discussions
  • make sure that Serial is set to “Disable” in the Raspberry Pi configurator
  • when initializing RoboPi, use /dev/ttyS0 instead of /dev/AMA0

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I must admit that I was concerned about changing the serial port on the GPIO header to the mini Uart, but these changes are relatively painless.

RoboPi is supported on the seven Raspberry Pi’s:

  1. Raspberry Pi 3 Model B (***NEW***)
  2. Raspberry Pi Model A
  3. Raspberry Pi Model B
  4. Raspberry Pi Model A+
  5. Raspberry Pi Model B+
  6. Raspberry Pi 2 Model B
  7. Raspberry Pi Zero

RoboPi is also supported on six other single board computers:

  1. Banana Pi
  2. Banana Pro
  3. LeMaker Guitar
  4. ODROID C1
  5. ODROID XU4 with Shifter Shield
  6. MIPS Creator CI20

You read right – RoboPi is now supported on 13 different SBC’s!