Gikfun USB Nano V3.0 ATmega328 CH340G 5V 16M Micro-controller board For Arduino (Pack of 3pcs) EK1620x3
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- Operating Voltage(logic level):5V
- Support USB download and Power
- CH340G Driver Download link : http://www.5v.ru/ch340g.htm
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CH340G REPLACE FT232RL
Operating Voltage(logic level):5V
8 analog inputs ports:A0 ~ A7
14 Digital input / output ports:TX,RX,D2 ~ D13
6 PWM ports:D3, D5, D6, D9, D10, D11
1 pairs of TTL level serial transceiver ports RX / TX
Using Atmel Atmega328P-AU MCU
Support USB download and Power
Support for external 5V ~ 12V DC power supply
Support power supply by 9V battery
Top Customer Reviews
They provide a relatively clean 5v power to attached peripherals, they blink the LEDs, and you can program them with the Arduino interface. Works as advertised, and the price is good.
First, I found the correct/latest driver by searching for: CH340 CH341 serial adapters on macOS 10.12 Sierra
This page had a link to the driver and a lot of useful info.
The drivers are called: 'Winchiphead signed drivers'
When you unzip the file, you will see version 1.3 and the MD5 of the .pkg file is: 633b61bc44a3c68ee837f82ebe843d4c
From terminal, you can verify with the command: md5 CH34x_Install_V1.3.pkg
Next, I manually found and removed the driver at: /Library/Extensions/usbserial.kext
I ran: sudo rm -rf /Library/Extensions/usbserial.kext
Note: Other people have found their conflicting driver as just usb.kext
Finally I reinstalled the driver. (Required a reboot)
After that, when I plugged in the chip, I was happily greeted with: /dev/cu.wchusbserial1420
Inclusion of the header pins is a nice touch as well. They fit perfectly, soldered right up, and work fine.
At $4 each, you can't go wrong!
After FTDIgate, I'm actually glad these things have the ch340 usb chipset instead, which drivers are trivial to install properly on Window or Linux.
The first pack of 3 had one of the arduinos dead-on-arrival. It was not recognized by the IDE and would not even show up on the USB. Contacted Gikfun and got a replacement for it. I like a company that stands behind its products.
I personally like the Nano for its versatility. Lots of I/Os with either digital or analog, 1 UART, very compact format. The nice thing about these is that it's easy to place them on a development board, or to solder directly to them and if you'd rather have screw terminal blocks instead, there's a wide variety of adapters such as WYPH Nano Terminal Adapter for Arduino Nano V3.0 AVR ATMEGA328P-AU Module Board. With this one pack of 3, I go from development to "production" easily.
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