Search:

Type: Posts; User: ZASto

Page 1 of 20 1 2 3 4

Search: Search took 0.03 seconds.

  1. Closed: Re: Can someone help me to find out what an unknown PCB is?

    Welllll... you should use some medicine for your memory :-) :-D
    I usually remember what some of PCB's are for, BTW I design them myself, even after years laying in the drawer.
  2. Replies
    11
    Views
    461

    Closed: Re: circuit design help analog to Potentiometer

    What is the model of that Lincoln welder?
  3. Closed: Re: Sine PWM calculated with pic, instead of using table

    In PICBasic and Proton Basic, HPWM is related to hardware PWM module in PIC micro, which directly sets registers of PWM module, leaving micro to do other work.
  4. Replies
    8
    Views
    661

    Closed: Re: Reliable GPS and Compass sensors

    Well, collect datasheets and start reading/studying to make YOUR decision.
  5. Replies
    9
    Views
    533

    Closed: Re: I cannot power that pelletier module

    Watch this channel on YT, you will find lot of interresting things about peltiers.
  6. Replies
    8
    Views
    398

    Closed: Re: To develop 3D printer in PIC controller

    On Github, you can find source for Marlin, GRBL, if you search a bit more, you can find source for GRBL (6 axes) running on STM32F1xxx, aka. Blue Pill
    "Small" micro is not just a dumb slave (sorry...
  7. Replies
    8
    Views
    398

    Closed: Re: To develop 3D printer in PIC controller

    First of all, you have to figure out what is the difference between microcontroller (AtMEGA, PIC) and microprocessor (ARM, Intel, AMD).
    Second, Marlin firmware or GRBL firmware are ment to be motion...
  8. Replies
    6
    Views
    981

    Closed: Re: VGA to HDMI conversion

    Buy one of these:...
  9. [SOLVED] Re: Do I need footprint if I will just simulate in protues?

    Have you tried KiCAD?
    Free, multiplatform, quite capable for production work.
  10. Closed: Re: Car battery STARTER voltage help (not charger) using variety of methods (possibly

    18Ah battery is inadequate for cranking truck engines. Due to internal resistance and ion buildup during high amp surge when internal resistance rises even more, the voltage drop on the battery cells...
  11. Closed: Re: Car battery STARTER voltage help (not charger) using variety of methods (possibly

    One thing that no one took in consideration is that a small battery cannot deliver high currents for starting cold "high performance" engine. By quoted I mean the gas guzzlers that could be found in...
  12. Replies
    38
    Views
    2,380

    Closed: Re: Capacitor Burning issue due to unusual reasons

    If the chinese board is based on similar components as yours, it's easy to reverse engineer :)
    You know the pinout of voltage regulator, you can alwaus trace the supply for shift register and so on,...
  13. Replies
    35
    Views
    1,512

    Closed: Re: High Frequency using 8051

    So, what kind of waveform are you expecting to have on inductive load? Perfect square?
  14. Replies
    38
    Views
    2,380

    Closed: Re: Capacitor Burning issue due to unusual reasons

    When posting schematic, try to post correct one.

    Your capacitor is, according to schematic, is connected to 5V, on PCB is across 15V
    If the supply is 15V, your cap should be for at least 25V...
  15. Replies
    38
    Views
    2,380

    Closed: Re: Capacitor Burning issue due to unusual reasons

    @wwfeldman: you can easily deduct schematic from the screen capture of the PCB.

    It should be double sided board with one layer beeing GND. Do not like so many 0ohm smd resistors used as jumpers.
  16. Closed: Re: Problems on Sending RS232 Signals through 3 Meter Core Cable

    If you are using SP3232, the capacitors could be ceramic. They are non polarized.
    Been there, done that. (0805 0.1 uF).
  17. Closed: Re: how to make DP flash every sec in 2-digit 7-segments without separation of track

    To display DP, you should toggle highest bit for your digit. i.e. 8. would be 0X00 (0B00000000) as oposed to 8 which is 0X80 (0B10000000), and so on for each digit.

    As betwixt showed in his...
  18. Closed: Re: Using 0-10V analog sensor output with rasbery pi

    These "new kids on the block" should first learn the basics of electrotechnic, to understand what is Voltage, Current, Power, Resistance, Capacitance, Inductance, and to UNDERSTAND howa Transistor...
  19. Replies
    4
    Views
    469

    Closed: Re: Flash programing in 33fj series

    Is this a typo?

    153514

    Same is in your attached file.
  20. Replies
    12
    Views
    912

    Closed: Re: Soft Start PWM With PIC16F886

    Another thong that, I guess is wrong, is:
    const unsigned char PW_Tab[71]= {
    0,10,20,30,41,51,61,71,82,92,102,112,123,133,143,153,164,174,184,194,205,...
  21. Replies
    5
    Views
    567

    Closed: Re: Pure Sine Wave Inverter 3000W repair

    First of all you have to repair the PCB as soon as possible. It is burned and started beeing conductive. The track at the edge of pcb seems to be broken.
    Next, when replacing transistors i...
  22. Closed: Re: how to design a thermostat without Microcontroller?

    Simple, analog, no uC:

    153066
  23. Re: Some specialist in medical equipment (technical)????

    Electronics of diagnostics devices is not different than any other electronics.
    I've repaired a lot of immunochemical and biochemical analyzers (guess they are "medical" machines).
  24. Replies
    6
    Views
    2,151

    Closed: Re: Unknown device in a high voltage chopper

    @d123
    If you look at the photo, ypu will notice one BRIDGE unpopulated (it has dashed line on silk between pads). Definetly it is a piece of wire suitably placed in a piece of some material to...
  25. Replies
    6
    Views
    2,151

    Closed: Re: Unknown device in a high voltage chopper

    Zero ohm resistor.
Results 1 to 25 of 500
Page 1 of 20 1 2 3 4