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Yes, I will build a separate PCB for this. It will have 2 connectors on output(like on schematic) - one for digital part of audio dac, and one for analog part.
DAC board will have both analog and digital ground pins.
What do you think about capacitor values? How can I calculate them?
I am...
Hi friends,
Currently I am designing USB & SPDIF audio DAC.
I have some doubt about power supply design.
I have attached schematics of the supply. As you can see it is +/-12V symmetrical. It supplies analog and digital parts of the device.
Both analog and digital part have their own LDO's and...
I have PORTB1 and B0. I can't change the pcb design, pcb is already made.
Can I use that voltage divider and set it somehow to make logic 0 on pin input when battery voltage drops bellow 3.3V?
I'm sure it can be done, but the problem is that before it drops to logic 0, it will be somewhere...
Hello people,
Is there any way to detect low battery with digital input?
I made a mistake while designing PCB, I routed the signal from voltage divider to digital input of PIC mcu instead to analog input.
I have a li-ion battery and linear voltage regulator that drops the voltage from 4V to...
Hello guys,
I would like to start an open discussion about proffesional design of electronic devices that should work in harsh industrial enviroment.
What are the common protective measures for inputs and outputs, besides galvanic isolation with optocouplers and relays?
How to choose...
Hello,
I have designed ethernet controller, and I am programming pc software to interface the controller via rs232.
In pc software I have fileds to set the IP address of the controller and subnet mask, and then write it to controller via rs 232.
I need source code for Subnet mask calculation...
Nope, now I get 0b11111010, and the delay is not good, it is much faster now.
I think the clock speed is now 64MHz.
If you look at the datasheet for 18F46K20, OSCCON=0b01110000 setting is for 16Mhz.
If we add 4xPLL, 16MHz x4= 64MHz
- - - Updated - - -
I turned off PLL, and set OSCCON...
Hi Tahmid,
In MikroC, mcu clock is set to 32MHz.
I don't have any idea where could be the bug.
Maybe the bug is in the Uart_Init function...
Thanks!
- - - Updated - - -
I get 0x10 (hex) 16(dec) 0b0001000 (bin), I don't know which charcter is that in ASCII. In terminal, it is just shown...
I'm trying to send character via UART, but I get some other character.
There is probably an error because of the wrong INTOSC setup, which is causing wrong baud rate.
Everytime I change settings of INTOSC, I get a different charcter on UART TX.
Correct baud rate is selected in uart terminal...
Thanks FoxyRick!
I agree with you, it's a pain. I thought that there is a standard for these connectors.
Now Ihave to throw away the board or the connectors... :)
Hi,
I made some kind of Ethernet relay board. I designed the board to use RJ-45 connector with integrated magnetics.
The board is designed for 212A-11XA0-R-B-2 connector, but I couldn't find it later, so I bought this connector:
https://www.farnell.com/datasheets/17297.pdf
Here is the...
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