LDR Pre MkII - LDR volume control and I/O switching

[zdr]

Hi Neb, I finished my build yesterday and tried to power it up today. I have the 1602 display and it showed just squares plus some strange letters or numbers. After a while letters stopped and there were just white squares.
I switched off the thing and reswitched it. Nothing at all.

Tried to flash the arduino, since I thought there might be something wrong. Followed your proposal but was not successful. Program found Arduino but couldn't connect to it. The system tried to connect for 10 times, then stopped. Strange. So I think I killed it with anything. Any idea?

I ordered a few of them for a new try.

Cheers,

Ernst

All arduino's in the kit have preloaded firmware for graphic OLED. You need to flash firmware for character oled, that has "C" in the filename, or use graphic OLED with loaded firmware.

 

[ernesternest]

Yes, this ist what I tried. Will flash the software to one of the new ones when I get them. The supplied one seems not be willing to be flashed by me. Good thing, ist, they are a bargain.

Cheers

Ernst

 

[zdr]

You are aware that my arduino clones are patched and that firmware won’t even flash on any other?

 

[ernesternest]

You are aware that my arduino clones are patched and that firmware won’t even flash on any other?

No, I was not really aware of that. Can it be done by myself, or do I have to order one from you? If the latter, I would order one.


Ernst

 

[zdr]

What do you get when you try to flash it?

 

[ernesternest]

Neb, in the windows command line I started as in your document descibed. Had to install libusb0.dll. Then there was a connection established and I was on the right path, but then I got the info, the flashing couldn't be done. The procedure was tried 10x by the software automatically, but always stopped due to a reason, I forgot. This is a bit of a vague description - unfortunately I don't remember more exactly. I it helps, I could try it again. I somehow think, there is something wrong with the nano.

Before that I had some issues with the PSU.

Cheers, Ernst

 

[zdr]

Please try again and post the output here. I don’t think nano is the culprit.

 

[ernesternest]

Tried again

Neb, here is the result. Same as yesterday. A guess?

Ernst

 

[ernesternest]

Hm, tried again and it worked. I used another USB port and got another com port therefor. Going to try it again in the PRE.

Cheers

Ernst

 

[ernesternest]

Ok, seems arduino Nano is ok agaun, but I might have destroyed somthing else with the PSU issues,I have had. I have wild clickering relays and wild blinking Display. Tried moreoften, but always the same. Maybe I shot the ICs?

 

[zdr]

Ok, seems arduino Nano is ok agaun, but I might have destroyed somthing else with the PSU issues,I have had. I have wild clickering relays and wild blinking Display. Tried moreoften, but always the same. Maybe I shot the ICs?

Did you insert nano properly without missing any pins?

 

[ernesternest]

Neb, yes Nano is properly connected. The clicking relays are the three ones close to the LDR'S.

Ernst

 

[zdr]

Neb, yes Nano is properly connected. The clicking relays are the three ones close to the LDR'S.

Ernst

Firmware burn was a success? Can you post the output here to make sure?

 

[ernesternest]

Firmware success!

Neb, yes the firmwareburn was a success. Here to see:

BR Ernst

 

[zdr]

Disconnect relay power R+ and rotary encoder and power it up, see the if you can get to error 20 on display.

 

[zdr]

If uln2003 is in socket, pull it out as well.

 

[ernesternest]

Neb, what happens when powering up in that way, pls see here:

YouTube

Cheers, Ernst

 

[zdr]

Neb, what happens when powering up in that way, pls see here:

YouTube

Cheers, Ernst

"This video is unavailable."

 

[ernesternest]

Should be ok now.

Ernst

 

[ernesternest]

Neb, I put in new IC's and nothing changed. It behaves still the same. So I strongly think, I have got an issue with the Nano. Would you be able to tell how to patch or send me a new one?

BR, Ernst