Graham Johnston

Hi again, sorry I'm slow in responding but we have just moved house with all the disruption that entails. This is where I have got to. I tried many time with different 'programmer' arduinos to load a bootloader into the NANO. ( 3 in fact ) Every time it came back with a error "Yikes! Invalid device signature." Then for none related reasons I upgraded fro Windows 7 to W10. I also loaded MyFocuserPro2. Just for the hell of it I connected the NANO and tried to program once more and . . . it did! No...

Looks like it doesn't have the bootloader. If I try Tools - Burn Bootloader it comes back with an error again. I'm going to google for a fix. Many many thanks for your help. As a retired engineer I miss the support of my colleagues. cheers gaj On Thu, 14 Nov 2019 at 22:01, brownrb brownrb@users.sourceforge.net wrote: If you have these settings and it still will not program are you sure it has a bootloader present on the chip? Board does not program https://sourceforge.net/p/arduinofocuscontrollerpro/discussion/general/thread/104a734fe7/?limit=25#2daf...

Just tried loading a simple example into the board and its coming up with the same error. Clearly a basic set-up problem. Thanks On Thu, 14 Nov 2019 at 11:24, Graham Johnston gajjer@users.sourceforge.net wrote: Hi there thanks for the prompt response. I've updated to Arduino IDE 1.8.9 Also turned on verbose in preferences Selected the old bootloader I note what you say about the incompatibility of the Windows application. My fault. Got confused with the mass of info that you provide and all the variants....

Hi there thanks for the prompt response. I've updated to Arduino IDE 1.8.9 Also turned on verbose in preferences Selected the old bootloader I note what you say about the incompatibility of the Windows application. My fault. Got confused with the mass of info that you provide and all the variants. It looks like a programming problem still. I get the following message shortly after it says it is uploading. avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x50 I am using a NANO board that...

I'm having problems programming my board - built on strip board. The program ( MyFP2_DRV8825HW203_291 )compiles ok then starts to upload. While programming the board LED starts to flash rapidly. It stays like this for at least 5 min. If I terminate by disconnecting the USB port and connect to the MyFocuserProL app, then press CONNECT it seems to communicate in a limited way. Get firmware returns P5000. There is no temperature displayed. The Get Temp returns and error message that it received P5000....