Search results

Search Forums New Posts
  1. OLIVE2222

    Sending .txt files through voice cell phone network.

    Hi, On cell phone the audio is processed via a voice codec to optimize the bandwidth. So PWM or tones may not pass correctly, to be experimented. Olivier
  2. OLIVE2222

    Modifying AA battery apliance to run on AC power

    Hi, For such a low demanding application you can drop the voltage a bit by connecting 3 or 4 garden variety 1N4007 diodes serially in the positive line. regards, Olivier
  3. OLIVE2222

    Bosch Relay Help

    Hi, The 155 one short time current max load is better 400 Amps in place of 250 for the 156 model (other spec does't matter). So it's all depend on the original part specifications! Olivier
  4. OLIVE2222

    Sending .txt files through voice cell phone network.

    Hi, Yes it' s possible to send text via a cell phone but not using the handset connection. As you have Arduino in mind you can use it with a GSM/GPRS shield and send you text via the shield serial port UART the through the air via a SMS or TCPIP. regards, Olivier
  5. OLIVE2222

    Rotate VGA

    Hi, I will do it differently. Looks better to me to hack the rotating motor to allow a back and forth rotation at each power up and use spring cable. By the way why is the display equipped with a rotating system? Olivier
  6. OLIVE2222

    Need help with achieving efficient noise filtering!

    Hi, It will be usefull to confirm you feeling by testing the amplifier on an external (not switched mode type) power supply. Doe's the amplifier work well with an external audio source like an MP3 player? The idea is to find out if it's power supply problem or an input stage problem...
  7. OLIVE2222

    Avionic Display Systems

    Hi, I guess that for such an assignment you have more information's to provide us! Do you need to simulate it on a regular PC? Is it a large color display or a basic led gauge? Do you need to build it from a marketed LCD display? Do you need to handle both hardware/firmware parts? Must the...
  8. OLIVE2222

    Need help hacking a respiratory monitor

    Hi, According to your pic it's looks like there is a led on the sensor. Other side should have a photodiode or a phototransistor to made the optical detection. Maybe be a sharp picture of the module inside can help. Olivier
  9. OLIVE2222

    Resistor question I.D.

    Hi, Hard to say if it' s a fuse resistor or not. I guess not according to his appearance and to the lack of warning sign on the PCB. Wattage should be in the 1-2 Watts range. regards, Olivier
  10. OLIVE2222

    34063 voltage drop

    Hi, KJ6EAD point out the MC34063 circuit inductance problem, not the inductance of the relays coils and indeed the MC34063 inductance must be sized according to the needed output current! Olivier
  11. OLIVE2222

    Need help in identifying this part:

    Sure Dave ! looks that the link was wrongly cutted by the reply window. I try with the Insert Link now. Olivier http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/CD00002907.pdf
  12. OLIVE2222

    Need help in identifying this part:

    Hi, It' s probably a STP60NF06L http://www.st.com/st-web-i/static/active/en/resource/technical/document/datasheet/CD00002907.pdf regards, Olivier
  13. OLIVE2222

    MPS750

    Hi, the MPS751 is the preferred device. Just a bit improved spec and available at digikey: http://search.digikey.com/scripts/DkSearch/dksus.dll?vendor=0&keywords=mps751&cur=USD Olivier
  14. OLIVE2222

    Sky Remote

    Hi, Accoring to Sky web site the batteries must be indeed replaced within in 10 minutes or a reset must be done: http://www.sky.com/helpcentre/tv/remote-controls/replacing-the-batteries/ no damage so. Olivier
  15. OLIVE2222

    mp3 player

    Hi secant, A simple DAC is maybe be possible but certainly will not be the best for the job. DSP are more intended for signal processing. A dedicated IC, like the STA013, would be better. Here under an example with the VS1001...
  16. OLIVE2222

    Farnell DTV60 Oscilloscope manuals

    Hi Tony, You can maybe try the farnell community: http://www.element14.com/community/index.jspa Also farnell don't build any measurement equipment, they just "rebrand" them. So maybe you can try to find the original manufacturer (by looking inside or on the net) to get a manual. Olivier
  17. OLIVE2222

    Scoreboard Project

    Silicon chip magazine has published a scoring board project: http://siliconchip.com.au/cms/search/index.html?scope=&keywords=scoring&Search=Search Olivier
  18. OLIVE2222

    beginner for microcontroller

    Hi Vead, Here under few considerations about. The main decision elements are: software side Atmel offer a free programming environment, AVRSTUDIO and a free C compiler.This set is compatible with all they 8 bits uC familly. http://www.atmel.com/microsite/avr_s...ource=redirect...
  19. OLIVE2222

    Help PILLER component

    Such snubbers are available at mouser.com http://be.mouser.com/Passive-Components/Capacitors/_/N-5g7r?P=1z0wquaZ1z0wo64Z1z0wj9mZ1z0vl8vZ1z0s76n&Keyword=snubber&FS=True watch the voltage rating and the pin spacing Olivier
  20. OLIVE2222

    RS232 Terminal Emulator.

    Hi, I use tera term, it' s work nice can be echoed and can log the data. This links looks clean: http://logmett.com/index.php?/download/tera-term-473-freeware.html Olivier
Top