Programming ATTiny85 with Arduino Uno R3

Projects Programming
1

Hi all, Very new to this device. Im trying to program an ATTiny85 chip using the Uno R3 and keep getting coms issues.

Have followed the recommended guide for it https://www.instructables.com/How-to-Program-an-Attiny85-From-an-Arduino-Uno/
gone through all the usual recommended trouble shooting (cables, reset, installs, replacement Uno) and nothing!

so could use some help. Guessing there is something im missing

Little on my system
Windows 10 x64
AMD cpu
IDE 2.2.1

Project - Bucket Mouse DMG-Color Gameboy - ATTiny85 for the Neo Pixel LEDs

avrdude: Version 6.3-20190619
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2014 Joerg Wunsch

         System wide configuration file is "C:\Users\Amy\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino17/etc/avrdude.conf"

         Using Port                    : COM5
         Using Programmer              : stk500v1
         Overriding Baud Rate          : 19200
avrdude: Send: 0 [30]   [20] 
avrdude: Send: 0 [30]   [20] 
avrdude: Send: 0 [30]   [20] 
avrdude: ser_recv(): programmer is not responding
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x03
avrdude: Send: 0 [30]   [20] 
avrdude: ser_recv(): programmer is not responding
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x03
avrdude: Send: 0 [30]   [20] 
avrdude: ser_recv(): programmer is not responding
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x03
avrdude: Send: 0 [30]   [20] 
avrdude: ser_recv(): programmer is not responding
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x03
avrdude: Send: 0 [30]   [20] 
avrdude: ser_recv(): programmer is not responding
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x03
avrdude: Send: 0 [30]   [20] 
avrdude: ser_recv(): programmer is not responding
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x03
avrdude: Send: 0 [30]   [20] 
avrdude: ser_recv(): programmer is not responding
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x03
avrdude: Send: 0 [30]   [20] 
avrdude: ser_recv(): programmer is not responding
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x03
avrdude: Send: 0 [30]   [20] 
avrdude: ser_recv(): programmer is not responding
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x03
avrdude: Send: 0 [30]   [20] 
avrdude: ser_recv(): programmer is not responding
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x03

avrdude done.  Thank you.

Failed chip erase: uploading error: exit status 1
2

Instructables has a bad reputation here for its inaccurate, incomplete and sometimes even dangerous tutorials.

So please describe the steps you took and show us a schematic of how you have the Uno and attiny wired up, and some clear, bright photos taken from above so that all the wires can be traced and we can zoom in to clearly see all the connections.

I don't own an Uno, but I have done this many times with Nano 3, before I got a dedicated programmer (a USBasp).

3

I had a quick look, this one seems to be ok, other than that i do no have an extra capacitor between GND & RST on the UNO, it will not reboot if you use 'Burn Bootloader' or use Sketch -> upload using programmer

I have a small adapter which includes also the leds that are used by ArduinoISP

  #define LED_HB    9
  #define LED_ERR   8
  #define LED_PMODE 7

Particularly the HB (heartbeat) can be significant. I found that sometimes i need to manually reset my UNO before the heartbeat starts to beat properly and the UNO will not work as an ISP if the section of the program that beats the heart is working.

I use my UNO for all boards that do not come with a USB port.

First burn the bootloader !
Then try Blink and if that works take it from there.

4

Hi Paul. As stated in my first post it is wired up and tried to program via the instructions as shown in the link i included in the post

5

I ofcourse tried to burn the boot loader first. And this is where im stuck at. It wont even do that. Hense my question.

6

Ok. Good luck.

7

Should you want to know why photo's make sense. Please see last week's post where the topicstarter ensures that all connections between UNO and T85 are ok.

Until his post #8 where the pictures and his schematic come in.

And BTW. The Damellis core described by instructables is so old, that your grandpa may have used it as a teenager :slight_smile:. I can recommend Attinycore

3 Likes
8

What's the point in showing when it wired exactly as shown in the link? I followed it to the letter. I may be new to Arduino but im not new to circuits. Ive been building electronic circuits since 1998 when i started highschool. Ive quadruple checked my wiring on both boards ive had. So i can asure you a photo is wasting everyone here's time and mine asking for something that need not be supplied. The fact im building a from scratch custom gameboy should atleast indicate ive got a very good idea on what im doing and that im only asking because ive tried everything else.

They may be old but thats what was supplied in the instructions for the build. Thankyou for the link ill look into it and see how it all goes.

9

Well thats a bust. Unable to download their coding. Cant find it within the Arduino IDE via board managers and the manual download doesnt work either. Did a google search for it, only results that came up were sites that either download via the link provided on the github page or just show a link to the github page. So if you know a trusted website where i can get it from thatd be handy

10

You are not the only one with this problem. Currently there is a certificate error that seems very hard to fix.
@ptillisch wrote a workaround that you may try.

Or.... you might have the same problem as overhere. Someone who received preprogrammed Attinies via Ebay. But given your decades of electronics experience and in depth gameboy knowledge, rigging up a HV programmer to reset the AT85 will be a piece of cake for you.

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