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 V3 Board 3-Pack CH340

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 MCU

📏Compact 1.76" x 0.71" breadboard-friendly

🔌Mini-B USB CH340 programming

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Description

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

COMPACT YET CAPABLE - Small footprint fits anywhere—perfect for embedded prototypes without sacrificing I/O versatility.
FLEXIBLE INTEGRATION - Loose headers let you solder for permanent builds or keep it breadboard-friendly for rapid iteration.
TRIPLE THE INNOVATION - 3-pack boards to power multiple projects or teams simultaneously—never pause your creative flow.
PLUG PLAY PROGRAMMING - CH340 Mini-B USB interface ensures hassle-free coding with broad IDE compatibility.
POWERHOUSE MICROCONTROLLER - 16 MHz ATmega328P with 32 KB flash and 2 KB SRAM for smooth, responsive prototyping.

The ELEGOO Nano Boards V3.0 3-pack features ATmega328P microcontrollers running at 16 MHz with 32 KB flash memory and 2 KB SRAM. Each compact board supports 14 digital I/O pins, 6 PWM outputs, and 8 analog inputs, programmed via a CH340 Mini-B USB interface. Designed for flexible prototyping, these breadboard-friendly boards come with loose headers for soldering or quick testing, ideal for STEM projects, embedded systems, and rapid development cycles.

Specifications

ASIN	B0713XK923
Best Sellers Rank	#29 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 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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₱2172

Duties & taxes included

In stock

Sold byAmazon PhilippinesDelivered 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 Philippines.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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