Get Arduino working with BAITE

I'm using

• OSX Yosemite (10.10.x)
• Arduino IDE

BAITE Arduino Nano - BTE14-01

This chip includes a USB port!

• Arduino IDE settings
  • board: set to Adruino Nano
  • processor: set to ATMEGA328 5V/16MHz
  • programmer: AVR ISP

BAITE Arduino Pro Mini - BTE13-010A

This chip does not include a USB port and so requires a transfer chip - see below for wiring

• Pro Mini 168 Mini ATMEGA168 5V/16MHz
  • BTE13-010A
  • pinout reference at talpa.dk
• USB to TTL transfer chip
  • BTE13-009
• Arduino IDE settings
  • board: set to Adruino Pro / Pro Mini
  • processor: set to ATMEGA168 5V/16MHz
  • programmer: AVR ISP

Connect the USB programmer

The connecting pins are:

 USB:340 connector   |   Pro Mini
 BTE13-009           |   BTE13-010A
 -----------------   |   -------------------
               DTR   |   DTR
               RXD   |   TXO
               TXD   |   RXI
               VC    |   VCC
      unused:  CTS   |   other GND - unused (do not connect)
               GND   |   GND

Driver

These chips need a driver: see below in "Troubleshooting the upload"

• http://www.wch.cn/download/CH341SER_MAC_ZIP.html
• http://www.arduined.eu/ch340g-converter-windows-7-driver-download/

Troubleshooting the upload

The problem

• Arduino IDE is trying to upload to "COM1" which is obviously not a OSX USB port (it's a Windows/DOS name)
• the Arduino is not showing up as a serial port

When trying to upload, you may see:

  avrdude: ser_open(): can't open device "COM1": No such file or directory
  ioctl("TIOCMGET"): Inappropriate ioctl for device

• http://arduino.stackexchange.com/questions/3324/arduino-compatibles-serial-port-not-showing-mac-osx

The Solution

In summary, all of:

• you need a CH340 / CH341 driver
• the driver isn't signed and therefore you need to run a special command in terminal
• you need to restart a bunch of times

From:

• http://0xcf.com/2015/03/13/chinese-arduinos-with-ch340-ch341-serial-usb-chip-on-os-x-yosemite/
• http://kiguino.moos.io/2014/12/31/how-to-use-arduino-nano-mini-pro-with-CH340G-on-mac-osx-yosemite.html
• video tutorial: https://www.youtube.com/watch?v=RTmjy3uDhPg

Turns out that the driver isn’t signed and in Yosemite, driver files must be signed to be used. There’s a command we can issue to bypass this.

1. Install software but don’t restart yet.
   1. ch34x - https://drive.google.com/file/d/0B8sZKxW3s0j-QU52N1ZCbFduYUE/view
2. in Terminal run:
   1. sudo nvram boot-args=”kext-dev-mode=1″
3. Restart your Mac
4. it shows up when you do ls /dev/cu.* , like "/dev/cu.wchusbserial1410"
5. no? try again. If the port isn't showing up, restart AGAIN (it took 3 times for me)
6. OPTIONAL in Terminal:
   1. sudo ln -s /dev/tty.wch\ ch341\ USB=>RS232\ 1410 /dev/tty.wch

More notes:

• check the apple menu "about this mac" to see the USB device
• http://arduino-project.net/driver-ch340g/
• http://www.kupply.com/dccele-dccduino-arduino-uno-clone/
• http://javacolors.blogspot.com/2014/08/dccduino-usb-drivers-ch340-ch341-chipset.html

FTDI drivers?

1. FTDI - https://learn.sparkfun.com/tutorials/how-to-install-ftdi-drivers/mac
2. could do next: http://forum.arduino.cc/index.php/topic,27266.0.html