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hey
i want to make power supply from this schematic:
I tried transistors:
- BDY25
- 2N2222
- 2SC867
And I tried transformers:
- old from TV like on picture (schematic)
- self-wound small transformer from ATX power supply
I power it from 13.5V and have 1000uF cap at circuit.
In every...
PS2 connector name (pc socket for keyboard)
How is standard PS2 keyboard connector for PCB called? I have been searching for such connectors on EBay and Aliexpress and found none. Are they really that rare or do they have some special name?
No, I am using PIC at 3.3v.
My problem is solved. My SPI1_Init_Advanced was wrong.
I was 100% sure it was OKAY because "READ ID" worked. That's why I didnd check it twice. I was looking for error in wrong place.
But somehow it turns out that "READ ID" works with bad edge rising setting (bad...
From what I understand, the Extended SPI is like SPI but with extra data line.
I wonder how do I support it on PIC and mikroC?
There is a "simple" SPI library for that:
https://download.mikroe.com/documents/compilers/mikroc/pic/help/spi_library.htm
Do I have to somehow extend the hardware SPI...
So I guess you should see this:
#define SPI_INIT SPI1_Init_Advanced(_SPI_MASTER_OSC_DIV16, _SPI_DATA_SAMPLE_END ,_SPI_CLK_IDLE_LOW,_SPI_LOW_2_HIGH) ;
//#define SPI_INIT SPI1_Init();
first I assumed it was OK because "read ID" commands works, but maybe here is the fault.
Or is there...
Hey
I am stuck with Memory project.
I can read memory ID so SPI communication works.
But when I write a byte and read it back, it comes back invalid.
My code:
void SST25VF_writeByte(uint32_t adr, uint8_t dat)
{
//dat = 'A';
SPI_INIT
setFlashSSN(LOW);
SPI1_Write(0x06);//write enable...
You mean that High state on driving pin will pull reset Low?
I think it's not the problem because I can control the driving pin from code. Also, I can decide myself whether I will pull it down or up by default (in case that driving pin mcu is not powered)?
As for your solution with 74AHC1G125...
I meant the obvious RESET circuit for PIC/AVR, but I will reclarify as you wish:
RESET is microcontroller RESET/MCLR PIN, 3.3V is microcontroller VDD, and "my circuit here" is the place where I want to connect my transistor/mosfet circuit driven by 5V-0V that will cause the resset the same way...
Ah, sorry, I will try to explain the best I can.
There will be two reset sources:
- classic tactile button (like in Arduino)
- my circuit which I want to add
The "reset target" chip is 3.3V PIC and the RESET works great with button but I want to reset it from 0V-5V TTL level from other MCU as...
Hey
I have 3.3V PIC mcu and other MCU that is 5V.
3.3V PIC MCU has a standard button + 10k resistor to VDD RESET / MCLR circuit.
I want to add a circuit that will take the logic level from 5.0V device (5V or 0V) and let it toggle the 3.3V PIC reset.
So, basically, one device will reset the other...
Thanks for review, but are you talking about the gray part outline?
You are right, 10.75mm, but I simply didn't check it, because only the holes matters for me. I just have enough space around connector on PCB.
I was asking about the holes only because I assumed that outline does not really...
I fixed LEDs and remaining dimensions, I hope this is final version, but can you recheck before I order gerbers?
I can see that but I can't find any more dimensions//relations that are wrong
Here's current version:
I changed everything I can think of, including the size of holes. They are...
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