Arduino mini pro reset problems

I read that the mini pro has an automatic reset when programming avaiable threw the 6 wire USB connection, the serial tab connection at the end of the mini only has 4 usable pins because I don't know what blk and grn are for. Anybody know how to hook this option up, my USB is the Arduino FTDI mni usb. I also enabled the reset on my com port in windows. I am used to pic's and so this is new to me :) Thanks

BLK is black and GRN is green, the colors of the ftdi usb cables used. I wondered a bit about that myself.


It figures but what do they do? Besides I made my own cable and it's all red :)

If you are talking about the Sparkfun adapter board, the "BLK" is ground, and "GRN" is DTR.

DTR through a 100nF cap, to Pin 3 (Assuming newer style mini) will give you the auto reset function.

Thank you Ill try it… Just a quick question to any one who reads this but does any one else find a serious lack of documentation on these products. I looked for hours, did I miss it … is there more instructions someplace other then the home page? and why grn and blk why not grd and dtr? Like I said I am used to Pics so I might be missing something. But anyway THANKS! Im glad the help on the forum is so great ;D

I'm afraid I don't know the answer to that one.

I do know on the latest rev of the Sparkfun adapters, the pins are labelled on the edge of the board.

Have a look at the product page, it also lists this:

The pins labeled BLK and GRN correspond to the colored wires on the FTDI cable. The black wire on the FTDI cable is GND, green is CTS. Use these BLK and GRN pins to align the FTDI basic board with your Arduino target.

Worthy to note though. they identify on the web page GRN is CTS, when the picture clearly verifies GRN as DTR.

My mistake my USB board is the Arduino Serial USB Board sku: DEV-08165 It does not give any information on the pin outs and the page like for hooking is for another product. This also does not explain the jumper on the board. I can try and go through the schematic . Thanks for all the help.