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  • Users: killabyte
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  1. killabyte

    cellphone camera search

    hi, im in finding a small camera module as a cellphone one does anyone know where to find one. i need to attach a flash memory card or some. best killabyte
  2. killabyte

    ramping stepper motor

    hi, im driving some stepper motors using the l297 and l298. and i want to know if allowable to accelerate the motor using a ramp dc increase in the v ref pin in the l297. this pin regulates the current delivered to motor windings through internal chopper circuit. instead acelerating the motor...
  3. killabyte

    stepper driver misbehaviour

    hi guys, recently ive been dealing with l298 stepper driver and using a l297 to control it through a 8 bits MCU in order to develop a small movement control system. the motor consumption is 1,2 A. power supply is 12vdc i found two problems when testing: 1. when inserted an amperimeter...
  4. killabyte

    6,4VDC to TTL bidirectional bus shiftting

    hi, i need to achieve fast bidirectional communication between two data level devices, the 1. is an open collector I/O device powered from a battery and unregulated. the batt swing between 6,4 and 5,0 VDC. the 2. is a bidirectional port in a MCU unit. the maximum allowed input for this device...
  5. killabyte

    electronic valve search

    hi im looking for a electric or electronic valve to control propane gas flow. low psi regards killa
  6. killabyte

    low pressure electronic gas valve

    hi, im looking for a low pressure propane gas electronic valve or regulator or such a way to control the gas flow delivered to a small (20 of them) gas heater the heater is fed by a small propane gas cylinder. im not sure about psi but one of those cylinders weights between 40 and 100 lb. the...
  7. killabyte

    ttl output to cmos input

    i need to input signal to a cmos device, but it is shielded and fed from 12vdc and have an internal regulator to 2.9vdc. i have a 12vdc supply and a 5v regulator. how to convert the 5vdc signal from mcu to input the device. its input is very sensitive to overcharge so 3.3vdc would destroy it...
  8. killabyte

    low pressure gas valve

    hi, i need to find an electric or electronic gas valve for low pressure applications, i need to control by means of a computer, humidity, TEMPERATURE and other parameters the gas comes from one of those gas cilynders. regards killabyte
  9. killabyte

    ac motor stalling

    hi, id like to know how to stall an AC motor, if possible to do in one phase AC motor and how to do in three phase ones. im developing an electronic control for a motor and i like to know if possible to do that. regards killa
  10. killabyte

    lanc protocol

    hi everyone, i need to find info about lanc protocol in camcorders, regards
  11. killabyte

    about pro video

    hi, i want to use three projectors (video beam) and three screens are joined to to make one (1) image; the output is a dvd signal from a typical dvd device, what kind of equipment should i use in order to separate the signal to those video beams? regards killa
  12. killabyte

    power generator help

    hi, does anyone have worked with power generators for audio applications? i need to know how much to derate a generator when working above 2600m altitude and some tips about generators when in audio applications regards killa
  13. killabyte

    power generator help

    hi, does anyone have worked with power generators for audio applications? i need to know how much to derate a generator when working above 2600m altitude and some tips about generators when in audio applications regards killa
  14. killabyte

    power protection help

    last year i found a solid state protective device, it was a whole small block consisting in ac input and protected ac output. it seemed like a big solid state relay but it happened another things inside. protection of ac supply, but now i dont know where to find it. actually im makin a...
  15. killabyte

    about ac regulation and protection

    does anyone knows about ac regulation and protection for an application of about 30KW one phase? id like to know methods or how to develop a protection. regards killa
  16. killabyte

    ultra small dc regulator

    developing a small dc regulator im trying to get 110 ac and then get 5vdc, @ 1A what do you think about rectify directly from 110vac, then using a SCR and a microcontroller to perform phase control, then a LC filter and at last a lm 5vdc regulator, i think it seems easy to develop and a small...
  17. killabyte

    integrated surge protection

    hi guys, im developing a power distribution rack, its just 50 A @ 120VAC maybe more than one phase, but i need to use a surge protector, somewhere i found an industrial protection device, something like a solid state device, but i lost the path and i dont know what to use. thanks if anyone...
  18. killabyte

    damage in electronic equipment

    i work in proffesional audio. i was working with some auto amplified speakers, that means that the amplifier is inside the speaker instead using an additional one to power them. two guys from electrical company, came to check something and i turned down the main gain in the console, so no...
  19. killabyte

    killing harmonics

    i want to make a filter to clean my ac line, but wich harmonics are the principal to deal with? i work in audio environment and usually i have to connect very low loads (very impositive) between 38 and 110 Hz in the mains and beats of 0.7 - 0.8 millisecond, high power peaks. i dont know, first...
  20. killabyte

    display data in guide???

    i need to display some data received from a serial comm using guide, but i dont know what kind of box to use, an edit box doesnt allow to diplay multiple lines, so, how can i do that? im having some trouble closing com1 when i use fread and fwrite, the port doesnt close properly and i have to...

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