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Hi,
I am not sure whether my connection is correct. I want to output audio from microcontroller to audio jack. Below is my connection:
MCU --> DAC(PCM1789) -- > LPF/differential to single ended buffer --> audio stereo amplifier(TPA6138A2) --> audio jack
I am not sure whether this would work...
i looked at different usb micro B connection, i see different interfacing circuits such as the D+,D- are sometimes directly connected, sometimes they put resistors(22ohm or 27ohm) resistors and also capacitors to the ground in the D+,D- lines. what is the difference? should we connect D+,D-...
hi,
i have question about the micro usb shield connector question. should the usb shield connector(6,7 pin) be connected to the ground as shown in attached picture?
hi gauravkothari23,
many thanks to you, the transistor solved the problem. could not make the pulldown resistor work
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hi gauravkothari23,
many thanks to you, the transistor solved the problem. could not make the pulldown resistor work but will try again later.
but still...
@ KlausST,
i tested again the line voltage and it is 4mV between line and ground. but this level is considered low. please see attached picture.
@gauravkothari23,
as i have come to know i incorrectly said that i have a pulldown resistor. i didn't see that you meant a pulldown/pullup resistor on...
actually i had already tested this before asking here. the voltmeter shows correct, when the pin is driven low it shows 0 wrt to ground.
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i have a pulldown resistor. actually the microcontroller sends low successfully and the pin reads 0 when measured. but somehow, the...
hi,
i have a situation, where a device is connected to a micrcontroller(PIC) via only one pin. The microcontroller should drive this device pin low. When the pin of the device gets low a LED indicator of the device should blink. However when i send low(for a while) the LED does not blink.
but...
I have to solder emva250ada470mf55g capacitor but it has plastic base around the legs. Do i solder it directly onto the pins or do i have to remove the plastic base?
i am working with PIC32 micro. I tested with typical continuity tester, between pins to headers, between pins and between headers connection, same results.
first on one side, i noticed this after soldering and checking each pin(my first time so...). I looked with magnifying glass into the pins...
I tried to soldered a microcontroller but then I am getting continuity between two pins connected to port headers. Is it that they are connected internally or is it that there is fault in my soldering?
hello,
i am trying to do a schematic as attached picture shows. in it, it shows VDD and VSS connected to capacitor then connected to ground i think.
in proteus, the VDD and VSS are hidden pins. So my questions is how can i make the connection as shown in the attached circuit?
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