Android Native Play Sound using /dev/msm_pcm_out
Directly interface the PCM device, using low level native C programming. Play sounds by sending data to /dev/msm_pcm_out
Author: Radu Motisan
Android Native Screen capture application using the Framebuffer
Learn how to do a programmatic screen capture on Android, using the framebuffer and some native C code. See how to correctly save a BMP file.
Android C native development using the NDK under Windows
Learn how to compile your C code to native Android executables, using Windows, Cygwin and the Android NDK in just 3 easy steps.
Lenovo ReadyCom5 and WLAN AP Issues
Lenovo ReadyCom 5 can cause a wireless router to self-reboot, remotely.
Reinstalling Vending.apk (Market) on Android
Learn how to reinstall the Market application on your Android, using the Vending.apk installer.
Android Bluetooth controlled robot – Part 1
Learn to connect a bluetooth module to an ATMega micro controller via the UART serial interface and even further, discover it using a bluetooth enabled Android phone. The 9600bps serial link established, can than be used to exchange data: read sensors or control the robot.
High Voltage Multiplier (Half Wave Villard Cascade) 28 STAGES!
Build a Half Wave Villard Cascade of 28 Stages. That means for 10KV in you get (in theory) 280KV out! An incredible voltage, perfect for physics experiments.
Tube: EM-11 (6U5G) Magic Eye tube (tunning tube)
EM-11 is a magic eye tube, used in old radios for tunning. See some schematics on how to use this tube, for some green, fluorescent effects!
Android Dynamic (no xml) Custom Adapter Listview
A tutorial on how to build a custom adapter for an Android Listview control, and how to catch the onClick event correctly.
Includes source code.
Android NDK for Windows setup guide
See how to configure Android NDK with Windows and build your JNI project in a few easy steps.
Webcam Surveillance with motion detection algorithm
A homemade/DIY security system using a webcam, a low power server and a surveillance software.
WinCE Broadcom stack FindAttribute SDP_DISC_ATTTR_VAL 256Bytes limit
See the real limit for receiving a SDP bluetooth device attribute in the SDP_DISC_ATTTR_VAL structure for the Broadcom Bluetooth Stack.
Kvarts DRSB-01 Dosimeter
The DRSB-01 is a simple Geiger Counter device that can be used to detect normal vs. dangerous levels of ionizing radiation (gamma and beta).
Apache won’t start – Skype to blame!
Skype opens the TCP port 80 for unknown purposes. It doesn’t ask for user’s permission. This “feature” however creates problems when running legitimate software like an apache server. Think twice when installing “bells and whistles” software like Skype, Messengers, and others.
Homemade mini-itx server
See how to build a case for a mini-itx computer board. A lot of processing power in a tiny box.
Peltier thermo-electric cooler
Use a Peltier cooler and electricity of pump heat and freeze water.
WinCE Bluetooth Broadcom stack ‘Not a valid Pocket PC application’ Error
Some details on the ‘Not a valid Pocket PC application’ error resulting from calling the IsStackServerUp API in Windows Mobile Bluetooth Broadcom stack applications.
Victoreen CDV700 6B Dosimeter Mod (Audio/BNC Connector)
The CDV700 dosimeter variant 6B (newer) and a few mods to improve functionality: audio connector and bnc connector.
Tube: SI-14B (CИ-14Б) Pancake Geiger Muller
The Russian SI-14B is a highly sensitive pancake geiger muller tube .
Radex RD1706 dosimeter
A short review on the Radex RD1706 dosimeter, how good it is, and how can it be compared to other dosimeters, eg. the Terra-P MKS-05.
Resizing Linux partition results in GRUB Error 17 fix
See how to fix Grub Error 17 on Ubuntu.
Variable regulated power supply
A variable 0..30V power supply for max 20ampers! See how to handle all the power and build your own reliable lab power supply.
Android dynamic TAB Control
Learn to create a tab control on Android, without the XML layout. Add an image to the tab control in a few easy steps.
Linear Pseudorandom number generator (PRNG)
Understand what a random number is , how important the chaos is, and how to understand a sequence of numbers that seems to have no meaning.
Terra-P Radiation dosimeter MKS-05
The terra-p Radiation dosimeter can be used to measure Gamma, Beta and X-rays.
High Frequency Solid State Tesla Coil (HF SSTC)
My first SSTC as a high frequency solid state tesla coil.
Mains hum sensor – detect the power lines inside walls
Detect the power lines route inside walls with this simple Mains Hum sensor
