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Showing posts from 2011

Arduino code for Gaui 330X quad copter

I've been doing some work with arduino and GAUI 330X. In this example we controlling the throttle speed of the engines. On the 330X throttle is also used to reset and config the ESCs (4 small boards that control the power to the engines and speed).
I removed the blades and replace those with plastic circles, so I can test the code without having the 330x flying all over the place.
Since I don't own a radio/receiver, it took me a while to get the 330X configure and working.
This example, should allow you to configure the ESCs, and start the 330X, and throttle the engine up and down with the potenciometer.
One thing I didn't realize for a while is that the ESCs are the ones that beep (not the GU334), and since all four are connected to the GU3344 is difficult to configure them because they all beep at same time and are not really synchronized, so you can't really figure out what is the current state of each one.
Probably in the future, I need to figure out a easy way to conf…

DFU Mode Arduino UNO without soldering

I did these steps after I loaded and "empty" sketch to the board.

Code: void setup(){}
void loop(){}
-----------------------------------------------------------------INSTALL THE DFU PROGRAMMER (console commands)
-----------------------------------------------------------------$ sudo aptitude install dfu-programmer

-----------------------------------------------------------------
DOWNLOAD AND VERIFY THE FIRMWARE (console commands)
-----------------------------------------------------------------
$ wget --no-check-certificate https://github.com/arduino/Arduino/raw/master/hardware/arduino/firmwares/arduino-usbserial/Arduino-usbserial-uno.hex
$ md5sum Arduino-usbserial-uno.hex
8e01ee236e70bbea43f7eb4e11c9688a Arduino-usbserial-uno.hex

-----------------------------------------------------------------
PUT ARDUINO UNO IN DFU MODE (see Picture)
-----------------------------------------------------------------
0) connect your board to the pc1) insert 2 wires in GND pins according to t…

Android LG optimus v factory reset

NOTE: didn't worked for me, I returned the phone in the end.

Android LG optimus v factory reset
1. Turn off your LG Optimus V.

2. Press and hold the following keys for over 5 seconds: Down volume key + Home + Power

3. When the power turns on, release these keys.

3G Drops & Standby Battery Drain (Solutions)

The steps were as follows:

* Check "Time Without a Signal": Home, Menu, Settings, About Phone, Battery Use, click "Cell Standby" and not the value. It should be close to 0% if you've been in 3G range. 50% indicates a definite problem.

To "Fix" - Note the original poster says this change will reset if you reboot the phone and need to be redone:

* Dial *#*#4636#*#* which will go to the phone's "Testing" menu.
* Click "Phone Information", then Menu, then click "Select radio band".
* Click "Force Close" and return back to "Phone Information"
* Scroll down to "Set preferred network type:"
* Click…

TMobile network speed using HTC G2 tethered to my old R50p

Here are a couple of TMobile network speed tests servers using my G2 and tethering to my old thinkpad R50p.


Reporting appliance power consumption over powerline

Here is a idea I had for appliances resource consumption reporting (ARC).
This post describes an appliance standard for energy consumption reporting, with extensions to report consumption of other resources. (Powerline products extend Internet access to any existing power outlet. Netgear and other brands sell devices with this techonology).
Below a a description of a method of producing and distributing this information in a home network environment with support for powerline networking: Add built-in powerline (network using the electrical cables) support to a fridge, toaster, microwave, tv, ps3, xbox etc. This would allow all appliances to be connect to a in home network. I'm assuming this would add 10-50$ extra to the cost of producing the appliances.Add power-line support to home routers (dlink, netgear and all other brands of wireless routers should come with power-line support by default).Create a standard for the appliances to find the home routers using the powerline connectio…