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Forum Index : Microcontroller and PC projects : Problem programming Nano
| Author | Message | ||||
Bryan1 Guru  Joined: 22/02/2006 Location: AustraliaPosts: 1617 |
G'Day Guy's, Well as I said in my inverter build thread trying to program a new nano is just refusing to work. First tried on my shed laptop running linux and no joy the same with my shed computer running win10. So just now on my house computer running win10 downloaded the Arduino software and tried to program the Nano with the lcd code as before and still no joy. so got Nano selected as the board COM3 checked and working old bootloader used clicked the first entry on the programmer list. Now this worked on my old computers before they died so with a fresh install of the Arduino with a board connected on 3 of my computers why does it refuse to program. Regards Bryan Edit: just went and tried on my good laptop and got the error programmer not responding. This was the same error on the other computers too Edited 2026-01-19 14:47 by Bryan1 |
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| Bryan1 Guru Joined: 22/02/2006 Location: AustraliaPosts: 1617 |
Well lets just say going from a 275A mig welder back to a soldering iron was the culprit with having no luck went and got a new nano and it programmed first time and when I used my phone camera to look at what the leds are for saw 2 solder globs shorting the pins. So used my solder sucker and tried again and it programmed  Before the rx/tx leds were on and the arduino software went into a never ending loop. |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 8455 |
I'd have got rid of the Arduino IDE forever and dropped the welder on the Nano, but that's just me, I'm like that. ;) Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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Sasquatch Guru Joined: 08/05/2020 Location: United StatesPosts: 383 |
Just FYI: I recently purchased a batch of Nano clones with USB-C ports from China. They seemed to be programmed with some kind of "BLINK" test code, but they wouldn't program with the Arduino IDE. I finally flashed the latest bootloader onto them and now they are working fine. Either they had no bootloader installed, or at least not one that worked with Arduino IDE (AVRDUDE?) China is like a box of chocolates, you never know what you are going to get! -Carl |
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| Bryan1 Guru Joined: 22/02/2006 Location: AustraliaPosts: 1617 |
Well the grey cells did remember with these clones a driver was needed to get these chip to work but no way could I remember what driver it was. So onto google and soon enough remembered so downloaded that CH340 driver and today I can do a test on a win10 computer to see if that is the issue or was it just my heavy hand trying to see what I was soldering.I did convert a magnifier to led's and never set it up so thats a job to do for future soldering as one does need to see with these old eyes. Regards Bryan |
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KeepIS Guru Joined: 13/10/2014 Location: AustraliaPosts: 2004 |
A ordered a few NANO USBC devices with no BL as I usually don't use a bootloader. Quite often the sites obscure this using miniature text with yellow foreground on a white background. The CH340 USB controller is usually a 16 pin chip, the FTDI controller "driver" is normally a 28 pin chip, baud rate is different between the Old and New Bootloaders, most Nanos can be upgraded to the new bootloader from the IDE which comes with the options to do so, from memory, you would need the little USBasp hardware programmer though, it's long time since I installed a bootloader. The Linux Arduino IDE Version: 2.3.7 - Date: 2025-12-17 AppImage is brilliant, it works perfectly under Linux, the editor has crisp clear text, dark mode is perfect for me, it also loads, runs and programs fast, leaves the Windows version in the dust . Edited 2026-01-20 08:42 by KeepIS NANO Inverter: Full download - Only Hex Ver 8.2Ks |
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phil99 Guru Joined: 11/02/2018 Location: AustraliaPosts: 2943 |
Last time I got a blank Nano I found instructions on the Arduino site for using another Nano or Uno (that has a bootloader) as a programmer to load the bootloader to a blank Nano or Uno. Edit. Tried to find it on the Arduino site but the site has completely changed. Appears to be all about flogging products. If there is anything useful left in there it is well hidden. Edited 2026-01-20 09:18 by phil99 |
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| KeepIS Guru Joined: 13/10/2014 Location: AustraliaPosts: 2004 |
I still have that project on the old PC somewhere, but Jaycar USBasp Programmer at $14.95 is hard to beat in AU, some lower cost on Amazon etc, works brilliantly and is the fastest universal design that I tested. NANO Inverter: Full download - Only Hex Ver 8.2Ks |
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