Problem with my first board Bootloader

Other Hardware Product Design
1

Hello, i designed my first custom board and as i am noob i think i made mistake somewhere.
Voltage regulator works fine, i measure 5.02V on 5V line.

Problem is i am not able to upload bootloader. I have this error:

avrdude: Yikes! Invalid device signature.
Double check connections and try again, or use -F to override
this check.

Failed chip erase: uploading error: exit status 1

I am using Arduino UNO as ISP programmer, connection from UNO to my Board is ok i verified it many times.

If i connect my board to UNO ICSP pins Uno Restarts one times.

I rried to desolder blank atmega chip from my board a solder one from spare Nano board where bootloader is and still the same, ICSP and FTDI does not work.

I tried to design the board as beautifully as I could, but there must be a mistake somewhere :frowning:
Maybe the crystal, its capacitors, or the schematic is wrong..

I did not solder yet OLED, Thermocouple IC 6675 and MPX5700AP

Can someone look at it? Thank you!!!

my board
my board1568×1143 214 KB

2

To what pin on your UNO do you connect the RESET pin of your board?

3

pin 5 on ICSP Header

sometimes i have this error

avrdude: Expected signature for ATmega328P is 1E 95 0F
Double check chip, or use -F to override this check.
Failed chip erase: uploading error: exit status 1

and sometimes this

avrdude: Yikes! Invalid device signature.
Double check connections and try again, or use -F to override
this check.

Failed chip erase: uploading error: exit status 1

Chip on my board is marked as MEGA328PU
this one: https://www.lcsc.com/product-detail/Microcontroller-Units-MCUs-MPUs-SOCs_Microchip-Tech-ATMEGA328P-AU_C14877.html

4

Good hint, i connected reset from my board to pin 11 on arduino and everything works now :slight_smile:

1 Like
5

That's what I suspected, as we have seen a few already who did exactly the same.

1 Like
6

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