Having problems uploading the blink sketch after building this Uno programming shield. Pretty sure the shield is correct after checking multiple setup guides on wiring.
Followed these steps.
1 - Added attiny board list to Preferences.
https://raw.githubusercontent.com/sleemanj/optiboot/master/dists/package_gogo_diy_attiny_index.json
2 - Upload ArduinoISP sketch to the Uno.
3 - Selected the Attiny85 board, changed programmer to Arduino As ISP, then uploaded the bootloader successfully.
4 - Opened the Attiny85 Blink sketch and compiled without error.
5 - When uploading sketch the following error occurs.
Arduino: 1.8.11 (Mac OS X), Board: "ATtiny85, Yes (Normal Arduino Serial/USB Upload), 8MHz Internal Oscillator, Millis and Tone Available, Bin, Hex, Dec Supported, Better Or Equal 1.666% Error (Default), LTO Enabled, 2.7v, Default, Default, Default"
Sketch uses 630 bytes (8%) of program storage space. Maximum is 7634 bytes.
Global variables use 18 bytes (3%) of dynamic memory, leaving 494 bytes for local variables. Maximum is 512 bytes.
/Users/t440plenovo/Library/Arduino15/packages/arduino/tools/avrdude/6.3.0-arduino14/bin/avrdude -C/Users/t440plenovo/Library/Arduino15/packages/diy_attiny/hardware/avr/2018.9.9/avrdude.conf -v -pattiny85 -carduino -P/dev/cu.usbmodem14401 -b38400 -D -Uflash:w:/var/folders/_l/y832j5q54ljg1_jf260dg6400000gn/T/arduino_build_12156/Blink.ino.hex:i
avrdude: Version 6.3-20171130
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2014 Joerg Wunsch
System wide configuration file is "/Users/t440plenovo/Library/Arduino15/packages/diy_attiny/hardware/avr/2018.9.9/avrdude.conf"
User configuration file is "/Users/t440plenovo/.avrduderc"
User configuration file does not exist or is not a regular file, skipping
Using Port : /dev/cu.usbmodem14401
Using Programmer : arduino
Overriding Baud Rate : 38400
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x66
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0xe0
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x66
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0xe0
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x66
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0xe0
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x66
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0xe0
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x66
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0xe0
avrdude done. Thank you.
An error occurred while uploading the sketch
Hoping for some clues on what is wrong or where to look. Thanks for your help.
