Ord bot Hadron 3d printer

Bought it at ebay and already assembled.
This is only a mechanical parts and they come partially assembled. You receive 3 assembled axes and you need to connect them. Instructions available at http://www.robotronics.com.au/web/ord-bot-hadron-assembly-guide
499$ + shipping.
Link

Webcam on odroid-x in Android

Finally I can use my webcam in Android. Thanks to latest release 1.8.0 UVC from hardkernel
Steps needed (Ubuntu):
1. Download kernel BSP for 1.7.1
2. Download arm cross compiler as described in http://forum.odroid.com/viewtopic.php?f=51&t=83
3. Now to command line

PATH=$PATH:/usr/local/arm/arm-2010q1/bin
make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi- odroidx_android_sdmmc_defconfig
make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi- xconfig


Enable all webcam drivers as modules. Or enable only specific driver.


make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi-
make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabi- INSTALL_MOD_PATH=../rfs modules_install
cp $(find ../rfs | grep .ko) ../rfs_fc
adb remount
adb push ../rfs_fc/ /system/lib/modules
adb reboot


Now when you start camera application - it will display image from your webcam.

Dyson vacuum cleaner brush fix

I own a Dyson DC 23 vacuum cleaner. One day it's brush stopped. Some tooth wheel inside was broken. It is expensive thing (it costs about 100$ here), but I had no choice. I ordered a new brush. It worked about a month and broke again. There is no warranty on brush. And it made from plastic.

   After detailed examination I found a broken pin beside the connection to tube. It is sort of limiter that holds brush inside the vacuum tube. And there is a solution that come after brainstorming.

Allen screw in place of the pin, strengthened by "Loctite" (You can see it at the picture center). The brush works again.

Beaglebone robot test drive.

Test drive with new servo motors and additional sensors.

New motors

The motors was changed to servos. The step motors have big disadvantages. 

• They require a lot of power (more than 1.5A) 
• When step motor run at slow speed - it vibrates. And everything that connected to it vibrates. The vibration is very powerful. It can open screws.

And 2 additional ultrasonic sensors was added at the sides. The software is on it's way.

Beaglebone robot. First testing.

Just tested the robot. It will be great. First simple testing for detecting obstacles.

Work in progress

My second bot is getting better.
Already connected and working:

• Step motors with a4988 drivers, 
• DC/DC convertor 12V to 5V, 
• Adafruit 1.8 TFT display (128x160), 
• Maxbotix Ultrasound range finder, 
• Adafruit INA219 Current/Voltage sensor, 
• VCNL4000 IR proximity sensor. 
• USB Wi-fi adapter

Waiting for some connectors to finish it all.
Linux kernel 3.2.33-psp26 (last stable kernel for beaglebone) should be patched for correct framebuffer display.