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Nano 3.0 controller soldering CH340 USB driver ATMEGA328 ATMEGA328P Mini USB With the bootloader cable weld
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Serial to USB Cable (CH340) - New Driver Not Functioning with C# Application - "A device attached to the system is not functioning" - Stack Overflow
![CH340 USB Serial Cable CH340 USB Serial Cable [RKI-2307] - ₹140.00 : Robokits India, Easy to use, Versatile Robotics & DIY kits CH340 USB Serial Cable CH340 USB Serial Cable [RKI-2307] - ₹140.00 : Robokits India, Easy to use, Versatile Robotics & DIY kits](https://robokits.co.in/bmz_cache/3/3bda869c9a1297707e44b0424aba1b04.image.1066x800.jpg)