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  1. ZomBiE

    BENQ M22 GSM/GPRS module

    Datasheet: http://www.honestar.com/En/Data_benq/M22/M22%20Datasheet.pdf General info: http://www.honestar.com/En/p_1_benq_gsm_m22.htm
  2. ZomBiE

    Gould 1421

    Yeah... Me too, me too... I was lucky though, found a service manual for Gould OS300 by googleing it and there it was, at least i got my OS 300 working. But those other 2 1421's are still dim, only power light is on but no trace.
  3. ZomBiE

    USB to LPT Adaptors

    Try this RS Stock No. 541-5801 It's almost same, but maybe you need to make an adaptor because it has centronics 36male connector
  4. ZomBiE

    Can i discharge Li-lon Battery Pack

    Many laptob batteries involve inbuilt memory wich is modified by the computer and/or by battery wich tells via battery "fuel gauge" that capacity left in battery, and that data sometimes may be corrupter/misinterpreted. In that case, that particular eeprom must be resetted.
  5. ZomBiE

    hall element

    What's the frequency? (how many poles in magnet per turn * rpm) There are many types for many uses...
  6. ZomBiE

    Type of heat sensor used in a digital clinical thermometer

    In medical type devices is oftenly used military-grade components too, ask your local component distributor. Here in Finland is quite easy to get military components. most semiconductor types would be more precise.
  7. ZomBiE

    Audiometric booth

    If you are wealty, then call your local TXH contact person.
  8. ZomBiE

    USB to LPT Adaptors

    I've noticed that RS components sells such lpt-usb dongle that supports all the possible tasks. It's bidirectional, does standard baud rates and of course: can print too.
  9. ZomBiE

    Why? Supply pins position differ in Dig & analog IC's

    Many manufacturers have gone to a compromise with their designs ages ago with themselfs for compatibility... All the chips can't be the same for design broblems, etc...
  10. ZomBiE

    How can I calibrate a scope?

    In my really old but trusted Gould OS300 scope, i have only 800hz but sharp probe calibration signal. But still measured with Finnair avionics super accurate voltage and sweep calibrators, even my old scope were below 0.5% tolerances :D
  11. ZomBiE

    Embedded System wave file player

    You're way off, basic principle is ok. But... It needs at least a AC'97 compatible codec and few more digital filter/sampling/converter IC's to get at least acceptable sound quality.
  12. ZomBiE

    Does Infra red get reflected from white surface?

    But even black reflects IR, and even in visible spectrum if it has enough intensity.
  13. ZomBiE

    How to rebuild a Li-Ion battery pack

    Well, Laptop batteries and such are quite tricky to rebuild if U don't have the "know-how". Many batterypacks have inbuilt serial eeprom that has to be reseted or otherwise inbuilt fuel-gauge won't work properly.
  14. ZomBiE

    Simple DC motor PWN speed control

    And be sure that your speed controller can stand twice that "shot-circuit" current when testing. PWM is tricky in some situations.
  15. ZomBiE

    How to rebuild a Li-Ion battery pack

    You just might to need to reset your batterypack serial eeprom with some tools found from web. i don't want just right now try searching for your battery, but it seems to be easy to locate your default code for particulate memory
  16. ZomBiE

    TV and VCR Tuner

    Most of them is supplying composite video and modern versions outputs nicam or A2 audio carrier, but then it gets more complicated because many of them uses different protocols of tuning: analog, I2C, or many variations of digital serial lines. analog mono signals are mostly analog voltage...
  17. ZomBiE

    Pellet Gun target

    We gone crazy and used a 21" sony trinitron monitor with touchscreen and my friend wrote the software  ;D
  18. ZomBiE

    Salvaging Computer PSU

    I just tested my old 350W ATX power supply made by Antec, and ifound that it needs load of 2A@3,3v, 1A@5v and 500mA@12v to regulate properly.
  19. ZomBiE

    Fun Card Programmer

    cable connection could be discovered by checking datasheets of those 2 ic's, but sofware is a whole different matter... It may be illegal to use this programmer in many situations, eg. copying de-scrambler cards. various software can be found from the web. try searching smartcard programming...
  20. ZomBiE

    Simple Transmitter/Reciever

    i've done that kind of device wich is built from simple AM transmitter/receiver pair and used simple pulse relay in it. details coming later...
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