Type: Posts; User: kripacharya

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  1. Replies

    Closed: Re: Solder flux uses and solder

    "Copper oxide is black"
    'Another copper oxide is red".

    Seriously? While the colours are correct, the explanation is not. These are not basic oxides.
  2. Replies

    Closed: Re: A-GPS is not working on SIM7600 Board

    What is this garbage you have posted? What is the context?

    What is the error you are getting? What is your own thinking and analysis?
  3. Replies

    Closed: Re: Choose a proper magnetic field sensor

    Try using SPAD LiDaR device, like VL53L0X for your purpose. Depending on what you are envisioning this might work better. Be aware that this too gets limited in bright outdoor direct sunlight.
  4. Closed: Re: (CST) Dipole antennas in TX/RX setup not interacting past 5ft distance

    What do you mean by "does not receive any signal" ? What level of signal are you expecting? What is your tx signal strength, and how are you feeding the fake dipole? What is the rx side look...
  5. Closed: Re: Use an OR wired with diodes to control the gate in a PMOSFET

    Good job Audioguru. OPs thoughts are also equally scattered. Maybe this'll help him understand the circuit shortcomings.
  6. Replies

    Closed: Re: Stable PWM during Voltage Loss

    This is turning out to be a very weird thread where nobody really knows what's going on.

    I strongly recommend we shut it down until OP can give a meaningful requirememt/ specification
  7. Closed: Re: Reflective area detection - optical lap counter

    Use any of 100's of photodetectors, IR sensors, LDRs etc to detect reflection. Count the pulses time the pulses. Use Schmitt gates.

    It's simple enough.
  8. Replies

    Closed: Re: interrupt or rtos in microcontroller

    Rtos is obviously a huge overkill for the processing elements outlined by OP. OP is still at the stage of blinking lights using interrupts. Don't encourage this path. Let him learn more about REAL...
  9. Replies

    Closed: Re: chinese generator not working

    Did you provide DC power with correct polarity ?

    Did you press the PowerOn switch for >3 seconds?

    No other help from here is possible.
  10. Replies

    Closed: Re: Linear led current regulator

    :clap: good call !

    Alternatively just use an Lm317 current source config. But then the max current is limited.
  11. Closed: Re: Does PIC16F18856 work if centre pad is left floating?

    Don't know for sure, but you will notice that wording in same page footnote#2 uses the word must be connected... , while note#3 says should be connected.
  12. Closed: Re: Identify capacitor with marking code L62 104

    Agreed. Even later for me. 100nF it is.

    - - - Updated - - -

    Well, the X5R notation is well known - it specifies temperature/ stability/ voltage etc. The L62 don't know.

    Is there a pic,...
  13. Closed: Re: ESP8266EX based wifi module does not respond on any AT commands ( E103-W01-IPX)

    Updating Chinese ESP8266 modules is tricky. You must be very sure what you are doing. Read the literature in detail before proceeding.
  14. Closed: Re: GPU with general purpose operating system

    Well.... John... then you are younger than the both of us ;-)

    Brian needs to update his pic. Uhh.. so do I.
  15. Closed: Re: Every few Hours clock running fast rtc1307

    It would seem that OP was using an inappropriate reference to check the accuracy. A common noob mistake.
  16. Closed: Re: Identify capacitor with marking code L62 104

    Please post a hi-res pic of the component.

    While we wait for that, "104" probably implies 10,000 pF, or 0.01nF. The pic would clarify if this is correct or not.
  17. Replies

    Closed: Re: Generating a frequncy


    Why didn't I think of that ?
    Oh yeah... Because it is not feasible.
  18. Closed: Re: how to design a thermostat without Microcontroller?

    Great to know it's working! I'm sure all contributers will be happy to read this.

    My advice - check the operations / play with this circuit until you know exactly how it operates / behaves for...
  19. Closed: Re: GPU with general purpose operating system

    Wow. Haven't come across that term in... umm.. decades? :thumbsup:
  20. Replies

    Closed: Re: Generating a frequncy

    I think you are confusing this forum with Google.
  21. Replies

    Closed: Re: Stable PWM during Voltage Loss

    Clearly this is some specialised equipment which I do not understand (Buck plant?, 5amps?, unknown voltage?).

    However the 'normal' way to bridge power outage would be by using a battery...
  22. Replies

    Closed: Re: Stable PWM during Voltage Loss

    Your descriptions are incomplete and inconsistent. Very difficult to provide any meaningful suggestions.
  23. Closed: Re: Does Solid State Marx Generators actually work?

    Ah ha. My mistake in transcribing your circuit into SPICE. Ignore my previous post :smile:
  24. Replies

    Closed: Re: Stable PWM during Voltage Loss

    It would be useful to know what exactly your 'plant' is. And how often you require this 50uS hiatus?

    If your plant is a motor, then maybe loss of pwm drive for 50uS can be tolerated simply through...
  25. Replies

    Closed: Re: pic16f877a + spi + 93LC46A-I/OT EEPROM

    Interesting AppNote. Especially this line quoted from the text "Since the Microwire protocol is not native to the MSSP module, a version of SPI mode 0,0 has been implemented and works within the data...
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