Atmega 328P communication problem

Hello Everyone,

I am very new to programming micro controllers and still learning. I bought this item; amazon.co.uk/gp/product/B00 … UTF8&psc=1

it has Atmega 328P chip, I build the circuit as in the web site and it worked well. It has a blink example built in already.

Anyway, I decided to change the program inside the chip so I bought this item; amazon.co.uk/gp/product/B01 … UTF8&psc=1

then, I followed the instructions on this; youtube.com/watch?v=sNIMCdVOHOM&t=480s

There are 2 pictures in the attachment. I tried almost everything but I couldn’t manage to get it done. The port of the cable is right, I checked it from device manager and it says FTDI. The selected board on the software is arduino uno. I am suspicious of this selection but it should be arduino uno.

I connected tx to rx and rx to tx and connected 5v and gnd and dt to pin 1 through 100nf capacitor. but it keeps giving me this error;

avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x5d
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x5d
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x5d
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x5d
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x5d
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x5d
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x5d
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x5d
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x5d
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x5d

Please help, I got stuck :frowning:

thanks

//Ari


Hi,

Please take a look at this forum post and this one.

Regards,

Hello bdaouas,

Thank you for your reply. However on both links the problem seems to be the capacitor that is not properly connected.
Have a look at the attached picture please.
I am 100% sure about the capacitor, I even tried with different 100nf capacitors, just to check the capacitor that I choose is working or not.

Hi,

Unfortunately, we don’t offer support for custom projects/designs. Maybe someone from the community will provide insight about this.

Regards,