Show Posts
Pages: [1]
1  Using Arduino / Storage / ATmega32U4 based Arduino with SD card as a Mass Storage Device? on: Today at 01:02:11 am
I believe that the LUFA project should make this possible, but I can't figure out how to use it. I have an SD card attached directly to SPI using the SparkFun MicroSD breakout board. I can read and write to the card fine using the SD examples in the IDE. I have no idea how to get ANY of the LUFA projects working though. Can anyone help me get an *.ino to do this?

Just for Google-fu...
ATmega32U4 based Arduinos include:
Arduino Leonardo
Arduino Micro
Sparkfun Arduino Pro Micro
2  Using Arduino / Microcontrollers / Re: Missing serial port with SparkFun's Arduino Pro Micro and Atmel Studio on: September 20, 2014, 12:51:06 am
Hope this can help someone down the road. Cheers

medieval_bird, thank you so much for taking the time to post this. I killed an Arduino Pro Micro within 2 minutes by uploading a sketch to it with the Leonardo board selected in the IDE. Doh! I ordered a replacement then used that replacement to recover the original making the change just as you describe. I figured out the wiring, but I would have just given up with that strange error if not for this post.

By the way, for anyone else who finds this post, that wiring for using a SparkFun Pro Micro 3.3V/8MHz as an Arduino ISP to burn a bootloader to another SparkFun Pro Micro 3.3V/8MHz is:
10  -> RST
16  -> 16
14  -> 14
15  -> 15
and don't forget to change the ArduinoISP sketch to:
#define RESET     10
3  Using Arduino / Installation & Troubleshooting / Re: Is my FTDI fried? Can I still program and serial monitor? on: September 03, 2013, 08:44:34 pm
I'm sorry for the confusion. I DO in fact have the keyspan usb serial adapter so, yes it should be a level 5v, correct?

If I successfully use my keyspan to write to the board, I may purchase the FT232RL chip to replace the fried one.

So, back to the pin connecting question. Is my mapping above correct? I will give it a shot tonight if you say it is.

I appreciate your thoroughness about the RS232 levels. I think that information may save someone who may stumble upon this thread.
4  Using Arduino / Installation & Troubleshooting / Re: Is my FTDI fried? Can I still program and serial monitor? on: September 03, 2013, 02:31:38 pm
BTW, this is a Duemilanove w/ ATMEGA168.

I'm not understanding your instructions for #2. I'm assuming I at least have to connect the serial ground to the Arduino ground, right? Are there other connections needed?

For the sake of others I want to make sure that this is clear.

Take as source of info...

Male connector: image attached

PinPurposeSignal Name
1Data Carrier DetectDCD
2Received DataRxData
3Transmitted DataTxData
4Data Terminal ReadyDTR
5Signal GroundGnd
6Data Set ReadyDSR
7Request To SendRTS
8Clear To SendCTS
9Ring IndicatorRI

I think you are suggesting this mapping:

Serial 2 -> Arduino D1
Serial 3 -> Arduino D0
Serial 5 -> Arduino Gnd

1. Is that it?
2. Will that allow me to both program and use Serial Monitor in the IDE?
2a. If not, would using the ICSP header via Atmel STK500 be an option?
5  Using Arduino / Installation & Troubleshooting / Is my FTDI fried? Can I still program and serial monitor? on: September 03, 2013, 01:32:25 pm
I accidentally hooked a 12V power supply to a breadboard power rail, not realizing that the 3.3V pin with connected to it. The sketch on the Arduino still works (it reads an analog sensor and displays the reading on an LCD) but I cannot Serial Monitor it or push new sketches to it. I have tried the USB on 3 computers with 3 operating systems, un/reinstalled FTDI drivers and tried the Loop-Back Test.

So, this is what I want to know:
1. Does it sound realistic that applying 12V to the 3.3V could do that?
2. Is there any way I can still hack on this thing until the replacement comes in? (I have USB->Serial dongles and an atmel stk500, but know very little about AVR.)

Please advise.

I thank you in advance!
6  Forum 2005-2010 (read only) / Bugs & Suggestions / Printable Arduino documentation or user manual on: August 03, 2009, 11:38:21 am
If such a thing does not exist, it should. I very much enjoy the wiki documentation, but it would be nice to have an offline copy. My father asked me about this yesterday and I told him, "I'm sure they have some form of printable reference." I cannot find it, so I think I have misspoke. He has been into electronics for more the 30 years and just can't be comfortable without a printed manual. If such a thing doesn't exist, I will write a bash script to scrape it from I would just like to know if I am wasting my time recreating someone else's work.
7  Forum 2005-2010 (read only) / Troubleshooting / LCD without a contrast potentiometer on: December 13, 2008, 11:32:50 pm
I'm new to electronics and I'm trying to figure out if it is dead or not.  Here is the product in question: I have tested the back light and it works. I don't have a potentiometer for the contrast lead, but I figured that I could use a 10k resistor instead.  I don't know whether it should be connected to + or -.

I've tried this: and wired it accordingly.  I'm not able to get the LCD to do anything.  Any ideas on how I can verify that it is not dead?
8  Forum 2005-2010 (read only) / Development / Re: Official Arduino Ethernet Shield, who is in charge on: December 04, 2008, 02:09:48 pm
The announcement on the blog was made by Massimo Banzi.
All the info on the page for the shield comes from
David A. Mellis. (Based on this)

I'm wondering were the discussion about this piece of hardware it taking place, or who I can contact in order to contribute to the effort of getting the SD reader supported. I have asked this question on the developers mailing list.

Any ideas?
9  Forum 2005-2010 (read only) / Development / Official Arduino Ethernet Shield, who is in charge on: December 04, 2008, 02:09:29 pm
I am limited on what I can do as my first post. I will follow up.
10  Forum 2005-2010 (read only) / Interfacing / Happy 12345th view! on: December 12, 2008, 12:30:41 pm
This is a great thread.  Thanks for contributing.  Just thought I'd capture the landmark I stumbled upon
Pages: [1]