Monday, December 9, 2013

New Product: USB Tester 2.0 Bundle!

After months of development, the USB Tester 2.0 Bundle has arrived!

Currently available on Tindie and soon on

USB Tester Bundle 2.0
USB Tester Backpack 2.0

The bundle includes both a new version of the Backpack and USB Tester. At this time, the new USB Tester is only available with the bundle.

New on Backpack
  • Micro USB
  • Button Location on the front left
  • 128x64 OLED Display (Double height of the 1.x version, easier to source)
  • Voltage monitoring of the USB Data lines
  • Easier access to almost all the extra GPIO’s

New on USB Tester
  • Micro USB
  • Separated voltage test points (Easier to attach test clips and avoid misplacing jumper)
  • Better labeling
  • Standard Dual Banana spacing 0.75in
  • Standard test probe sized test points

New Firmware Features (Will be available for 1.x version)
  • Peaks
  • mWh and mAh tracking
  • Big Readout Display
  • JSON for serial communications

Updated Java App (Beta)
  • Implemented JSON over serial
  • Will save as CSV
  • Add display of new data values
  • Working on graphing some of the new data

We’d like to thank Ed for all of his help and contributions.

Saturday, December 7, 2013

Angstrom Yocto 1.4 from Source

Going down the ROS road has been a long one. Full of hair pulling (if I had any) but also a huge learning experience now that it is working. Due to some of the requirements for mjpeg-server I had to compile Angstrom from source so that I can use the branch for Yocto 1.4. In turn this has lead to having to compile other components like the WiFi driver.

Compiling from source isn't too bad as it uses the same Bitbake process used for recipes. The hard part is flashing the SD Card and then flashing the eMMC. I am not sure if  I did it the "correct" way but in the end it worked. This is how I did it...

BBB: Getting Setup, Updating, NTP, WiFi

This post comes after having a few issues and deciding to redo my BeagleBone Black.Unlike the Raspberry Pi, there are few things you need to do, like loading the latest image, WiFi, and NTP.

Your Beaglebone Black may not come with the latest image but after flashing there are still updates by running the opkg update and opkg upgrade. This takes a long time to run. Once complete, the SSH session will be disconnected and you can power cycle. If you have connection errors it's a problem with DNS and you can add the feed URL to the hosts files.!topic/beagleboard/Kyq1NQOFSns Running an upgrade is optional; it will run fine without it. 

Download the latest image:

Download the one with BBB-eMMC-flash-XXX.img.xz

Sunday, December 1, 2013

Weekend Harmony 720 Repair

A few days, weeks ago our Logitech Harmony 720 remote had some issues. It seems that the interface and buttons were working but not transmitting to any device. Over Thanksgiving weekend I got a chance to take it apart to see what was going on. During the IR Camera, test I was able to confirm the IR LEDs where not emitting at all.

After a quick Google search, it looks like this is a common issue. It could be from the heat generated while charging. To me, it sounds like an engineering flaw. But I have to admit this remote lasted a long time and it was purchased from eBay. It's probably been at least 3+ years.

Harmony 720 Parts