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  • DummyD commented on holybaf's instructable Arduino Wireless Power POV Display4 months ago
    Arduino Wireless Power  POV Display

    so basically on what i understand, PWM is just a square wave signal with adjustable duty cycle and the blocking oscillator is just a generator of square wave signal but the signal created by that oscillator cant be adjusted like the PWM....and is it okay to use either square wave or sine wave signal for the transmitter??TIA

    thanks for all the reply @holybaf u help me understand and i hope u will still answer my questions if i have one in the future

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  • DummyD commented on holybaf's instructable Arduino Wireless Power POV Display5 months ago
    Arduino Wireless Power  POV Display

    when you say square wave do you mean it as a PWM? TIA

    sorry if i misunderstand some of your reply liek for example;my question: did u use a sine wave signal to induced a current to the other coil?your answer: Yes, this is a simple sine wave oscillator.and here is some of your reply: I don't use sine wave generator. My little circuit is a tipycal blocking oscillator. (https://www.homemade-circuits.com/blocking-oscilla... it creates sine wave by itself. The frequency is between 1-2 MHz.You can use 555 if you like difficulties :)

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  • DummyD commented on holybaf's instructable Arduino Wireless Power POV Display5 months ago
    Arduino Wireless Power  POV Display

    thank you for all your reply but i cant still grasp how the blocking oscillator can create a sine wave, can you pls explain it to me because i need it for my presentation. i hope u understand

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  • DummyD commented on holybaf's instructable Arduino Wireless Power POV Display5 months ago
    Arduino Wireless Power  POV Display

    can you plss share to me the schematic diagram of your blocking oscillator for my reference? i hope u can share it to me...TIA

    so what is the input voltage for your blocking oscillator? it is 5 volts?

    and in case i use the 555 ic what kind of configuration should i use is it the astable or the monostable?

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  • DummyD commented on holybaf's instructable Arduino Wireless Power POV Display5 months ago
    Arduino Wireless Power  POV Display

    thanks for your reply...but i have some additional questions that still need some clarification i hope for your further assistance.1.in your sine wave generator did you use 5v or higher? and what frequency did u use?2.i dont have sine wave generator but can i use the 555 timer chip as a substitute for my sine wave generator?3.why did u not use a bridge rectifier to convert the ac voltage coming from the other coil?

    hi...i just want to ask some questions because i want to make it for my project and i hoped u can help me...here are my questions.1. what is the diameter of the the transmitter and the receiver coil?2.did u use a sine wave signal to induced a current to the other coil?3.what is the use of the capacitors in the transmitter side and the receiver side?sorry for this questions of mine but im hoping u can answer all of them because im little bit lost and i need some knowledge how did it work.TIA

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  • Cat Tracking Using Bluetooth Indoor Positioning

    sorry for this stupid question of mine but im hoping someone will answer this...can i use ble (BLUETOOTH LOW ENERGY) as beacons and track android phones instead?? thanks in advance for the one who will answer this

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  • DummyD commented on Milen's instructable Digital Multimeter Shield for Arduino1 year ago
    Digital Multimeter Shield for Arduino

    hi siri just want to verify one more thing, does the DMM measure the voltage,resistance and current at the same time??

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  • DummyD commented on Milen's instructable Digital Multimeter Shield for Arduino1 year ago
    Digital Multimeter Shield for Arduino

    i get it now sir and thank you for answering my questions :) (Y)

    im still i little bit lost sir you said current is the input for the ampere but how can you produce current??

    sir sorry but im still having some trouble understanding the amperemeter..you said the input for the amperemeter is current but how did you produce current?? and the arduino only reads voltage correct me if im wrong...further help is aprreciated sir

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  • DummyD commented on Milen's instructable Digital Multimeter Shield for Arduino1 year ago
    Digital Multimeter Shield for Arduino

    btw sir how much voltage did you use to supply the LM358 opamp??

    thanks again for your help sir.. but according to the schematics on step 5 the positive supply and negative supply of the opamp are not connected, and how much voltage did you use to supply the LM358 supply? and how did you use the amperemeter to measure current did you connect it in series like normal multimeter??i hope for your response and thank you in advanced:)

    thanks for the fast response sir..Im getting the gist of it but im a little bit confused so ill ask a question again if you may, and correct me if im wrong.. Basically on what i understand you use your voltmeter ckt to read the voltage drop across the 1 ohm resistor and amplify that voltage using the LM358 opamp to get a higher value for a better resolution for arduino...So my question sir regarding to the amperemeter, what is real the input for the amperemeter ckt. It is the voltage or current? voltage used to supply the LM358 opamp? and lastly im not really good at reading schematics sir and i have a favor to ask can you please give me the schematic you used just for the amperemeter and the code...and i apologize for being demanding but i need your knowledge to help me understand all ...

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    thanks for the fast response sir..Im getting the gist of it but im a little bit confused so ill ask a question again if you may, and correct me if im wrong.. Basically on what i understand you use your voltmeter ckt to read the voltage drop across the 1 ohm resistor and amplify that voltage using the LM358 opamp to get a higher value for a better resolution for arduino...So my question sir regarding to the amperemeter, what is real the input for the amperemeter ckt. It is the voltage or current? voltage used to supply the LM358 opamp? and lastly im not really good at reading schematics sir and i have a favor to ask can you please give me the schematic you used just for the amperemeter and the code...and i apologize for being demanding but i need your knowledge to help me understand all of this..thank you in advanced sir and any help is much more appreciated :)

    thanks for the fast response sir..Im getting the gist of it but im a little bit confused so ill ask a question again if you may, and correct me if im wrong.. Basically on what i understand you use your voltmeter ckt to read the voltage drop across the 1 ohm resistor and amplify that voltage using the LM358 opamp to get a higher value for a better resolution for arduino...So my question sir regarding to the amperemeter, what is real the input for the amperemeter ckt. It is the voltage or current? voltage used to supply the LM358 opamp? and lastly im not really good at reading schematics sir and i have a favor to ask can you please give me the schematic you used just for the amperemeter and the code...and i apologize for being demanding but i need your knowledge to help me understand all ...

    see more »

    thanks for the fast response sir..Im getting the gist of it but im a little bit confused so ill ask a question again if you may, and correct me if im wrong.. Basically on what i understand you use your voltmeter ckt to read the voltage drop across the 1 ohm resistor and amplify that voltage using the LM358 opamp to get a higher value for a better resolution for arduino...So my question sir regarding to the amperemeter, what is real the input for the amperemeter ckt. It is the voltage or current? voltage used to supply the LM358 opamp? and lastly im not really good at reading schematics sir and i have a favor to ask can you please give me the schematic you used just for the amperemeter and the code...and i apologize for being demanding but i need your knowledge to help me understand all of this..thank you in advanced sir and any help is much more appreciated :)

    View Instructable »