When you go to elegoo.com and download the .zip for their nano with the ch340, there are a bunch of ch340 drivers. what are these for?

They are for different operating system, say win10 or Mac. Pls. download ans install the driver according to your system.

Does this have bootloader installed ?

I'm surprised by the previous answers - the instructions plainly tell you to install a bootloader. Without the bootloader it may sort of work, but I found that even a simple program would not run properly. So, I recommend resetting, loading the bootloader and then loading your program.

What is the max voltage to power it through vin pin? have used 12v no problem. want to try 16v. description at top says 6-20v, but later says 7-12v.

I have used 16v no problem but 12v is best. Have not used 16v for long duration however. Try it. If damaged it is only $4 lost

Can it be programmed thru the micro-USB port or do you need a special cable connected thru the 6-pin (2x3) header?

They can indeed be programmed through the USB. I haven't even soldered the six pin header on yet. (This package contains 3, and none of the pins are soldered on.) You do need a driver for the USB chipset, but it's easily found on Elegoo's website, and works just great. I really like mine.

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Nano Boards V3.0, ATmega328P CH340, 3-Pack, Compatible with Arduino

Product ID: 42284009

Details

Brand
ELEGOO
CPU Speed
16 MHz
Memory Storage Capacity
512 KB
Model Name
Nano V3.0
Ram Memory Installed Size
2 KB

⚡16 MHz high-speed MCU

📏Compact breadboard-friendly size

🔌Mini-B USB CH340 programming

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Description

🚀 Elevate your maker game with ELEGOO Nano V3.0 – where compact meets powerful innovation!

PLUG PLAY CODING - CH340 Mini-B USB interface ensures hassle-free programming setup
COMPACT YET CAPABLE - Small footprint with 14 digital I/O, 8 analog inputs, and 6 PWM outputs
FLEXIBLE INTEGRATION - Loose headers for easy soldering or breadboard prototyping versatility
TRIPLE THE INNOVATION - 3-pack boards to power multiple projects or teams simultaneously
POWERHOUSE PERFORMANCE - ATmega328P MCU with 32 KB flash & 2 KB SRAM for smooth multitasking

The ELEGOO Nano Boards V3.0 pack three compact, breadboard-friendly microcontroller boards powered by the ATmega328P running at 16 MHz. Each board features 32 KB flash memory, 2 KB SRAM, 14 digital I/O pins, 8 analog inputs, and 6 PWM outputs, programmed via a CH340 Mini-B USB interface. Ideal for multitasking projects, STEM teams, or embedded prototypes, these versatile boards offer flexible soldering options with loose headers and support a wide range of Arduino-compatible applications.

Specifications

ASIN	B0713XK923
Best Sellers Rank	#32 in Single Board Computers (Computers & Accessories)
Brand	ELEGOO
Built-In Media	3 Nano V3.0 Boards, Loose Header Pins
Compatible Devices	Arduino Nano V3.0, various devices with Mini-B USB, and devices compatible with the Mini or Basic Stamp pin layouts (such as certain boards from Arduino, Adafruit, or SparkFun)
Connectivity Technology	GPIO, I2C, USB
Customer Reviews	4.6 4.6 out of 5 stars (1,859)
Item Dimensions L x W x H	1.76"L x 0.71"W x 0.4"H
Item Highlight	Without USB Cable, 8 Analog Inputs and Loose Headers, Compact 5V 16MHz Boards with CH340
Item Weight	2.86 g
Manufacturer	ELEGOO
Memory Storage Capacity	512 KB
Mfr Part Number	EL-CB-005
Model Name	Nano V3.0
Model Number	CA-EL-CB-005
Number of Items	3
Number of Packs	1
Operating System	FreeRTOS
Processor Brand	Atmel
Processor Count	1
Processor Speed	16 MHz
RAM Memory Installed	2 KB
RAM Memory Technology	SRAM
Total Usb Ports	1
Unit Count	3 Count
Warranty Description	1 Year Manufacturer
Wireless Compability	802.11b

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$52.16

Duties & taxes included

In stock

Sold byAmazon EcuadorDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Ecuador.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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