October 8th, 2008

Computer Mobo Scroungeup

Computer motherboard scroungeup

Recently i received 2 computer motherboards and one broken laptop. So i started doing the best thing for them 🙂 , taking them apart. First came the notebook, which was quite difficult to take apart, lots of screws in lots of small corners, pieces screwed together from both sides, etc.

But after a couple of hours i was left with a 15,4″ WXGA lcd panel, one 512 MB ram dimm(i used this to upgrade a friends laptop), a laptop keyboard, a laptop battery, a laptop cd-rom, a wifi lan board, and lots of different chips taken from the motherboard. In fact i will post a list with all the parts at the end of the article, because i have an idea 🙂

Next came the two computer motherboards, i took those apart too and saved allot of interesting chips.

And now the idea: since i now have a bunch of parts i want to give’em to someone so it can make something interesting out of it. I also want to give that person a PCB from BKRtech. So take a look at the list and if something looks interesting and you have an idea let me know, I’ll send you the parts and the PCB.

the list..

  • LF-H80P – 1:1 ethernet transformer
  • TEA5767 – single chip FM radio (1 x TEA5767 sent to Andreas Nilsson in Sweeden, there is 1 left)
  • RTM660 – 109R Realtek soundcard
  • ALC655 – six channel AC’97 audio codec
  • CMI9738 – four channel AC’97 audio codec
  • RTL8100CL – single-chip fast ethernet controller with power management
  • W83627HF-AW – Winbond I/O familly chip
  • W49V002FAP – Winbond 256k x 8 cmos flash memory with fwh interface
  • Samsung 610 K9K8G08U0M – 1G x 8 Bit / 2G x 8 Bit NAND Flash Memory – Samsung semiconductor
  • Samsung 616 K9WAG08U1A – 1G x 8 Bit / 2G x 8 Bit NAND Flash Memory – Samsung semiconductor
  • SST39VF04 – 5124K x 8 CMOS Multi-Purpose Flash
  • ATJ2085W – single-chip for flash-based digital music player
  • ATJ2085H – single-chip for flash-based digital music player
  • APL1087 – 800mA Low Dropout Fast Response Positive Adjustable Regulator and Fixed 1.8V, 2.5V and 3.3V
  • GD75232 – multiple RS232 drivers and receivers – Texas Instruments
  • TPS2210A – PC Card Power-Interface Switch w/ Reset For Serial PCMCIA Controller – Texas Instruments
  • TPS5130 – triple synchronous buck controller with nmos ldo controller – Texas Instruments
  • MAX1909E – Multichemistry Battery Charger with Automatic System Power Selector
  • ISL6559CR – Multi-Phase PWM Controller
  • 7407 – Hex Buffers/Drivers With Open-Collector High-Voltage Outputs – Texas Instruments
  • IRF3704S – SMPS MOSFET – International Rectifier
  • F3711S – HEXFET Power MOSFET – International Rectifier
  • CEB6030L – N-Channel Logic Level Enhancement Mode Field Effect Transistor – Chino-Excel Technology
  • FDD8896 – 30V N-Channel PowerTrench® MOSFET – Fairchild semiconductor
  • FDD8880 – N-Channel PowerTrench® MOSFET 30V, 58A, 9mO – – Fairchild semiconductor
  • 20N03L – Power MOSFET – ON Semiconductor
  • PMBS3904 – equivalent 2N3904 NPN Epitaxial Silicon Transistor
  • LM324M – Low Power Quad Operational Amplifiers – National Semiconductor
  • ISL6227CA – Dual Mobile-Friendly PWM Controller with DDR Option – Intersil Corporation
  • G1421 – 2W Stereo Audio Amplifier with No Headphone Coupling Capacitor Function – Global Mixed-mode Technology Inc
  • G792 – probably fan controller – Global Mixed-mode Technology Inc
  • 74LVC08A – quadruple 2-input positive-and gates
  • 74AHCT125 – quadruple bus buffer gates with 3-state outputs
  • 74AHCT08D – quadruple 2-input positive-and gates
  • AO4407L – P-Channel Enhancement Mode Field Effect Transistor – Alpha & Omega Semiconductors
  • AO4800BL – Dual N-Channel Enhancement Mode Field Effect Transistor – Alpha & Omega Semiconductors
  • ISL6207CB – High Voltage Synchronous Rectified Buck MOSFET Driver – Intersil Corporation
  • LVC14A – Hex inverting Schmitt-trigger with 5V tolerant input – NXP Semiconductors
  • 74LCX00 – Low Voltage Quad 2-Input NAND Gate with 5V Tolerant Inputs
  • APL5331 – 3A Bus Termination Regulator – Anpec Electronics Coropration
  • 4431B – P-Channel 30-V (D-S) MOSFET – Vishay Siliconix
  • 2951 – adjustable micropower voltage regulators – National Semiconductor
  • RT9173 – 1.5A/3A Bus Termination Regulator – Richtek Technology Corporation
  • AT93C46 – 3-Wire Serial EEPROMs – ATMEL Corporation
  • 4422 – N-Channel Enhancement Mode Field Effect Transistor – Alpha & Omega Semiconductors
  • 74HCT14 – hex schmitt-trigger inverters – Texas Instruments
  • 74F32D – quadruple 2-input positive-or gates – Texas Instruments
  • CV137PAG – Programmable FlexPC Clock for AMD K8 Processor ATI RS480 – Integrated Device Technology
  • 10 KOhm thermistor
  • SMD inductors – 15uH, 4,7uH, 6,8uH, 3,3uH
  • SMD crystal oscillators and connectors
July 26th, 2008

ASUS Eee Pc Car Charger

ASUS Eee Pc Car Charger

You’ve probably seen the article about the Asus Eee PC and what can be integrated inside it’s case. But after you’ve done some modding and added different devices your battery probably doesn’t last as it was intended to last, so if you need to charge it in the car you either buy a commercial adapter or you make it.

This projects shows details on how to build an Eee Pc car charger. There are actually a small number of parts so the whole cost should be small.

ASUS Eee Pc Car Charger: [Link]

July 17th, 2008

Wireless Audio Streamer

Wireless Audio Streamer

With a DIY audio streamer, you can send your favorite tunes wirelessly from your computer to other rooms. Anyone can build this remote-control wireless streamer for less than a hundred bucks using just about any old Windows computer. You can buy or make a custom enclosure that matches the room’s decor and add a small LCD screen to show you what song is playing. Then throw in a wireless remote control, and start streaming your favorite tunes anytime and anywhere you want.

Wireless Audio Streamer: [link]

Control A Servo Using A Joystick

The first step on the project is joystick control of a servo over a USB connection. The end result which will make the project complete would be a RC rover monitored and controlled with a laptop and joystick on a WiFi network. The first step is already finished and the author managed to control a servo with the joystick.

Control A Servo Using A Joystick: [Link][via]

LCD Display Controlled From A Computer Trough The Parallel Port

Connecting a LCD display to the end of a printer-cable is a simple and effective way of providing additional functionality to your computer system. The printer-cable LCD can be mounted on your computer case or fitted inside a Jiffy-Box and displayed somewhere away from your case. Even the fully functional software interface is simple to install and configure. The parts used are a non-backlit 16 x 2 character LCD and a parallel port cable(printer cable).

LCD Display Controlled From A Computer Trough The Parallel Port: [Link]

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