A collection of a few NOS photosensitive vacuum tubes.
When using CreateProcess win32 API make sure the lpCommandLine is not a constant or your application can crash.
Create a simple game board and write a little software game for your ATMega8 LCD board.
An article about a differential Arduino robot by Rodrigo Nascimento Hernandez
Atmega8 and an A1302 Hall Sensor for sensing the magnetic fields in close proximity.
This article shows a few basic things:
– How to connect your iPhone to your desktop PC and how to update the iPhone firmware
– How to downgrade the iPhone 3G from 3.1 to 3.0
– How to activate the iPhone 3G 3.0 (jailbreak)
– View iPhone filesystem in total commander
– Do screen captures of your iPhone 3G
Perseus 3, a 4×4 advanced robot featuring an Atmega8 for sensor interfacing and motor control, and a I-mate SP5 smartphone (200MHz) running Windows Mobile 6.0 as robot’s brain. Small weight, powerful trust, and lots of features including WLAN, Bluetooth, Camera, Speaker, Phone-interface (GPRS, 3G), Microphone (for voice commands) and more.
Disable the “No SIM card.” annoying Android message.
An article on various high voltage sources. Includes schematics, construction details, high resolution images and videos.
How to make a high voltage capacitor in a few steps. See a video with my 19nF/10kV capacitor, with under 1$ cost.
A new differential robot platform, with strong gear motors and low power consumption.
How to extract huge word lists for most languages, using the Aspell dictionaries.
See how to get more Bluetooth functionality on your Android device then the interface offers you. Discover nearby bluetooth devices, and see what interaction options you’ve got.
List of HCI commands.
Hunting down some connectivity issues with the ADB command from the Android SDK.
Add Bluetooth functionality to your microcontroller project (atmega8).
Hot news: You can change the android partitions to Read-Write so you can upload new file versions (eg. permissions.xml) .
Learn how to handle drawing on the Symbian platform. A step by step guide on how to draw images and polygonal shapes.
Make the first HelloWorld application for Symbian
An useful post on how to use gcc and the android toolchain to produce native C applications for the google android.
Get started with Android Java development – a tutorial with detailed steps and lots of pictures to help you make your first android application.
Powering UV light tubes. A short comparison between UVA and UVC.
A tutorial on how to unlock your Android G1, how to upgrade the ROM version and how to get Root on your embedded linux box.
– how to connect the Android to your Windows PC
– how to take screen captures from your Android
– how to install new software on your mobile device
An easy way to built a high performance flyback transformer. Custom and perfect to fit your needs.
ZVS Powered tesla coil with a nice setup on two decks
A not-so-short article on various robot platforms I’ve experimented with. See my latest designs, and learn about my findings on robotics.
How to build a microcontroller to control a motor in both ways.
A few words on the Windows Mobile Seminar held in Lisbon, Portugal, during 11-12 March 2009.
As a speaker at this seminar, I’ve presented a Voice Command Recognition system for Windows Mobile, in my topic named “Extending your Smartphone’s functionality”.