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

ELEGOO 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 ATmega328P CPU speed

📏Compact 1.76" x 0.71" breadboard-friendly size

🔌Mini-B USB CH340 programming

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Description

🚀 Elevate your DIY game with ELEGOO Nano V3.0 — tiny boards, massive potential!

COMPACT YET CAPABLE - Small footprint with 14 digital I/O, 6 PWM, and 8 analog inputs for versatile sensor & motor control
FLEXIBLE INTEGRATION - Loose headers for soldering or breadboard use—customize your build your way
TRIPLE THE INNOVATION - 3-pack boards to power multiple projects or team builds simultaneously
PLUG PLAY PROGRAMMING - CH340 Mini-B USB interface ensures hassle-free setup with Arduino IDE compatibility
POWERHOUSE MICROCONTROLLER - ATmega328P with 32 KB flash & 2 KB SRAM for robust coding and multitasking

The ELEGOO Nano Boards V3.0 3-pack features compact, breadboard-friendly microcontroller boards powered by the ATmega328P running at 16 MHz. Each board offers 32 KB flash memory, 2 KB SRAM, 14 digital I/O pins, 6 PWM outputs, and 8 analog inputs, making them ideal for diverse Arduino-compatible projects. Equipped with CH340 Mini-B USB programming interfaces and loose headers for flexible prototyping, these boards deliver professional-grade performance at an unbeatable value for makers, educators, and STEM teams.

Specifications

ASIN	B0713XK923
Best Sellers Rank	#30 in Single Board Computers (Computers & Accessories)
Brand	ELEGOO
Built-In Media	3 Nano V3.0 Boards, Loose Header Pins
CPU Speed	16 MHz
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 out of 5 stars 1,859 Reviews
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
Ram Memory Installed Size	2 KB
Total Usb Ports	1
Unit Count	3 Count
Warranty Description	1 Year Manufacturer
Wireless Compability	802.11b

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E£ 2717

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered 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 EGYPT.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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