Search found 9 matches

by sean
Mon Dec 12, 2011 10:00 pm
Forum: Freeduino USB Host Board
Topic: Which pins are not used?
Replies: 1
Views: 5337

Which pins are not used?

Greetings, The silkscreen on the board says "PINS IN USE" beneath pins 13, 12, 11, and 10, and there is a box around 9 that seems to include that pin. Looking in the schematic, however, it seems that 9 is not used, and 7 is used. (10-13 appear to be used and correctly marked on the PCB.) Which pins ...
by sean
Mon Dec 12, 2011 9:50 pm
Forum: Freeduino USB Host Board
Topic: Constant "reset" under certain power-up conditions
Replies: 1
Views: 7382

Constant "reset" under certain power-up conditions

I've noticed (and this may not be new, as I'm peeling the onion on multiple issues) that when I power up the board, if the board has been unpowered for some time (more than 5 seconds), the uploaded application does not run, and pressing RESET has no effect. A scope on pin 13 shows it doing the 3x bl...
by sean
Sat Dec 10, 2011 7:15 pm
Forum: Freeduino USB Host Board
Topic: Upload problems...
Replies: 18
Views: 30589

Re: Upload problems...

I have recovered my replacement Freeduino USB Host board (see previous post.) I purchased an Arduino Uno, wired it as an ISP, and flashed it with the "Bare Minimum" app in the Basic examples. Pictures of the board and links to instructions for building it and reprogramming are here: https://plus.goo...
by sean
Mon Dec 05, 2011 12:28 pm
Forum: Freeduino USB Host Board
Topic: Upload problems...
Replies: 18
Views: 30589

Re: Upload problems...

I wanted to report (belatedly) that the replacement board was received and works like a champ. I also want to warn people about using Serial.print to send debug messages to the serial console in the Arduino UI. This was not the problem on the board reported in this issue (I never was able to upload ...
by sean
Wed Aug 10, 2011 2:23 am
Forum: Freeduino USB Host Board
Topic: Upload problems...
Replies: 18
Views: 30589

Re: Upload problems...

I finally made some time to examine the board thoroughly and it looks like the ATMEGA328 is responding, but the responses are not getting back to the PC. I modified another device to convert TTL to serial. With this and a serial program with hex readout capability, here's what I see when I attempt a...
by sean
Thu Jul 14, 2011 8:39 am
Forum: Freeduino USB Host Board
Topic: Upload problems...
Replies: 18
Views: 30589

Re: Upload problems...

I decided to try sniffing the USB interface using Wireshark. I've done this for IP countless times but never for USB. After filtering out some of the noise (using wireshark filter expression "usb.data_len != 0 and usb.transfer_type == 3") and comparing the data sent/received from this board and a wo...
by sean
Tue Jul 12, 2011 12:59 pm
Forum: Freeduino USB Host Board
Topic: Upload problems...
Replies: 18
Views: 30589

Re: Upload problems...

Unfortunately, the July 4th holiday and other projects have prevented me from answering these until now. Does the sketch compile? Yes. Can you upload the Arduino blink sketch? No. This is the place where I'm stuck. I cannot upload sketches at all. I see the following error: avrdude: stk500_recv(): p...
by sean
Mon Jun 27, 2011 4:55 pm
Forum: Freeduino USB Host Board
Topic: Upload problems...
Replies: 18
Views: 30589

Re: Upload problems...

Regarding larger caps. We wanted to include a robust power system since the phone may require charging at 500 mA and there may be other things powered by the board. I'm absolutely positive that most things would run fine with 47 u caps. What one hopes to avoid is plugging in the phone and having th...
by sean
Sun Jun 26, 2011 8:50 am
Forum: Freeduino USB Host Board
Topic: Upload problems...
Replies: 18
Views: 30589

Re: Upload problems...

I am also having trouble uploading. SYSTEM: Macbook Pro Core 2 Duo running Arduino 0022, OSX 10.6.7. Able to successfully upload to ordinary Arduino Uno. Board type selected is Arduino Uno, serial port selected is /dev/tty.usbserial-A700fdqR. SYMPTOMS & TROUBLESHOOTING: Attempting to upload a small ...