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Hi Andrew Finally got this to work by downloading an earlier version of the IDE from Arduino site. Version 1.8.1.9 I ignored some warnings during the verify and it works fine. Managed to upload some minor changes to the text and will later try the UNO traffic lights etc to see if that works on this ...

Hi Andrew I re-visited the Arduino IDE download page and there is an older version which works fine. Loads of warnings in the compile/verify stage but they are just warnings and managed to upload on the second attempt to hit the reset button at the right time. Managed to change the text and it was a...

Hi Andrew Sorry but still cant get this to upload. I have tried many many many times to hit the right moment but from "Compiling" to the first "Uploading" message there is only milliseconds. No time to press the button and release. But there are two brief messages on the bottom left of the IDE scree...

Hi Andrew Loop-back worked fine. Yes the error is the result of trying to to upload: /* FILE: HC8x8x8_Play_Patterns DATE: 14/03/16 VERSION: 0.1 AUTHOR: Andrew Davies 14/03/16 version 0.1: Original version Error message below Sketch uses 13624 bytes (42%) of program storage space. Maximum is 32256 by...

Hi Andrew I followed your instructions and the Prolific for COMx was finally no longer listed in device manager. I downloaded the prolific drivers again from your link, Just to make sure, unzipped and installed your driver as listed. Checked the driver version in Properties and it is 3.3.2.102 date ...

Hi Andrew I am on Windows 11 and tried all the suggestions you have posted but still get the error message:- "avrdude: stk500_recv(): programmer is not responding" I have tried the uninstall device at least a dozen times but Win 11 always manages to find its own driver (I think) as it still comes ba...