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Recent content by tpetar

  1. tpetar

    Design of 433mhz rf transciever

    Hi, No need for encoder IC. See example: Simple Wireless Temperature Monitor Also Has Data-Logging Capabilities https://www.maximintegrated.com/app-notes/index.mvp/id/5150 MAX6577 is a local temperature sensor that detects the ambient temperature at the device. The output of the MAX6577 is...
  2. tpetar

    On board Audio has died!!

    In any case, an experience more. :-) If you have an extra disk you can try it on him. Best regards, Peter
  3. tpetar

    On board Audio has died!!

    Hi Elaine, I think that You should check again all suggested measures, somewhere mistake is hidden. for next step try to reinstall OS, and first install motherboard drivers, starting with sound drivers, after that check sound output. If this does not show some results, maybe its time to...
  4. tpetar

    240c128 LCD not working (JHD240128D)

    Update your compiler from v5.61 to v6 or at least 5.8.0. Version 5.8.0 have a lots of improvements and fixes. Best regards, Peter
  5. tpetar

    Charging a SLA Battery with configureable Voltage but constant Current

    Hi, Manufacturer recommendation for charging battery are in battery datasheet. Usually for 7Ah charging current should be something between 0,7-1,1A. Voltage for float charge up to 13,8V and for cycle charge up to 14,4V at 25C. If you decide to charge your battery faster probably battery will...
  6. tpetar

    Need help with a white noise device

    Also you should know that usage, possession and trading RF jammers is prohibited in almost any country. Think twice before you start bulk production. Best regards, Peter
  7. tpetar

    Network as a Service

    Network-as-a-Service (NaaS) https://searchsdn.techtarget.com/definition/Network-as-a-Service-NaaS https://research.microsoft.com/en-us/um/people/pcosta/slides/costa12naas_slides.pdf https://www.grid.org.il/?CategoryID=568...
  8. tpetar

    Need code for this project

    Looks like they start to collect money on that site, but you can find relevant informations here: http://www.projecttitles4free.com/2012/01/lcd-based-voting-machine-using-8051.html Best regards, Peter
  9. tpetar

    PIC32 interface with TFT image display .

    First you need to properly initialize touch screen. Post circuit and code. Best regards, Peter
  10. tpetar

    strange problem with a PIC18f1320 on a breadboard

    Re: PIC18F1320 stops blinking LED and restarts after 2-3 minutes For sure You declare war to this problem. :-) Best regards, Peter
  11. tpetar

    help about modunlate OOK

    Read these documents: A COMPARISON BETWEEN OOK/ASK AND FSK MODULATION TECHNIQUES FOR RADIO LINKS **broken link removed** Optical Modulation Methods **broken link removed** Best regards, Peter
  12. tpetar

    strange problem with a PIC18f1320 on a breadboard

    Re: PIC18F1320 stops blinking LED and restarts after 2-3 minutes Try standard power source with earlier suggested regulators. Avoid to supply external boards from PicKit2 power except for programming purposes. Best regards, Peter
  13. tpetar

    strange problem with a PIC18f1320 on a breadboard

    Re: PIC18F1320 stops blinking LED and restarts after 2-3 minutes Probably power source is bad or cheap SMPS adapter. Try with standard 7805 regulator or any other linear/linear LDO for 5V with appropriate usage of capacitors, use 100uF before regulator, 10uF and 100nF after regulator. Best is...
  14. tpetar

    strange problem with a PIC18f1320 on a breadboard

    Re: PIC18F1320 stops blinking LED and restarts after 2-3 minutes Post whole code. Remove 47uF from uC pins, leave only 100nF between Vdd and Gnd pins close as possible. Ensure higher voltage then 4,6V for uC, if possible 4,97-5V. PIC18F1320 dont have problem for lower voltages, but keep...
  15. tpetar

    strange problem with a PIC18f1320 on a breadboard

    Re: PIC18F1320 stops blinking LED and restarts after 2-3 minutes What power source you are using, did you check that? Best regards, Peter

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