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31  Using Arduino / Installation & Troubleshooting / Re: Raspberry Pi doesn't see Mega on: February 24, 2014, 08:58:46 pm
You are lacking very much on detail.
How are you connecting the two together.
What is connected to the Mega to view the serial monitor on?
The USB  input on the Arduino is connected to a USB port on the pI through a powered USB Hub.
A VGA monitor is connected to the Pi through a VGA/HDMI adapter and I want to use the Serial monster provided by the Arduino program on the Pi, at least that is what I hope to do. In the meanwhile I am using Arduino on a PC not in sight and going back and forth on my wheelchaiir. What a hassle that is! I have successfully connected the Pi to the Arduino via I2C and am attempting to control hardware on the Arduino with the Pi and need to see what the Arduino is doing.

Jim
32  Using Arduino / Installation & Troubleshooting / Re: Raspberry Pi doesn't see Mega on: February 24, 2014, 01:49:33 pm
Do you have Arduino IDE installed on RPi?

Yes I do.
I'm trying to use the serial monitor through Arduino.

Jim
33  Using Arduino / Installation & Troubleshooting / Raspberry Pi doesn't see Mega on: February 23, 2014, 03:01:54 pm
I am trying to connect a Mega to my rpi to use the serial monitor to troubleshoot the code. I program it on my PC, which works fine. Unfortunately the PC is 10 feet away from where the pi and arduino are, so I can.t use it.A Uno didn't show either. I program it on the PC because the rpi is too slow.

Jim
34  Community / Bar Sport / Re: Found today on the intertez on: February 08, 2014, 08:34:25 pm
There was a early 60s VW running around sillycon valley in the 80s with license Feature.
35  Community / Bar Sport / Problen with ds102 oscilloscope on: February 04, 2014, 08:44:00 pm
I just purchased a new computer(Windows7 pro, 64bit). My ds102 oscilloscope worked fine with the old computer(Windows XP, 32bit) but the new computer gives error "USB device not recognized". I searched the web with no luck. This is really a handy device and I'd like to upgrade it!
Jim
36  Using Arduino / Programming Questions / Modifying Arduino libraries to use on Beaglebone Black on: November 06, 2013, 07:56:03 pm
I want to use a BBB thru level shifters to interface with a 3.2 touchscreen/LCD. The easy way would probably to modify the existing Arduino library , I think. Is this feasibly or as easy as I think?  Is there information on how to do this I havent found?

Jim
37  Using Arduino / Programming Questions / Firmata and LCD on: June 23, 2013, 10:48:56 am
I am relatively new to both Arduino and Raspberry Pi. I have Firmata working and can read a switch to control a LCD with the rpi. I found several examples to do this on the Internet but nothing more complicated. I have an Arduino Mega and a LCD/Touchscreen/shield from Sainsmart. I want to control the Mega to display on the LCD and read touch positions from the touchscreen through the Mega and pass them to the rpi. Are there examples on the net for more complicated uses of Firmata with a different shields which require thier own library? Does the library get added into to the Firmata sketch?

Jim
38  Community / Bar Sport / Re: What if the transistor was never developed? on: June 13, 2013, 07:43:59 pm
Speaking of valves(tubes) in 1970 I was working at Tetadyne Semiconductor. We made fetrons, which mimicked the characteristics of different tubes with FETs. The government requested a 12AX7 fetron. We made some samples and they took them away and came back and complained they didn't work. We must have gone through this cycle 6 or 7 times. Finally we told the government we needed to test the circuit and see what they needed. Two of us got Top Secret clearances so we could go see what it was. There was a one block square 7 story building is Seattle Washington housing the Dew Line computer. I'm not sure how many 12AX7's, but lots of them. When we finally got one that worked and sold them all they wanted, we heard that they turned off seven of the eight air conditioners on the building
Jim
39  Using Arduino / Installation & Troubleshooting / Re: Can't download with 1.X, can with 023 on: June 13, 2013, 10:24:12 am
Update! I had another Mega and tried it with same result.
40  Using Arduino / Installation & Troubleshooting / Can't download with 1.X, can with 023 on: June 12, 2013, 06:01:21 pm
I've using 1.0.1, mainly because I'm too busy to upgrade. I was doing the typical edit/compile,download/run/repeat sequence. I try to only edit 10/20 lines at a time because I'm a error prone programmer. One time I hit the download and my sketch compiled but did not download. I checked and the led on my mega flashes once, then every five seconds. Since there was an example for part of the board I was working on that used .02X I tried using that to see if it would download. It downloaded just fine. I then installed 1.0.4 and tried with that. No download! Because I'm a persistent cuss, I tried 1.0.2/1.0.3. Neither of those would either. .022 worked fine. WTF! The board is a Sainsmart 3.2" LCD/Touchscreen and my sketch worked, but needed fine tuning. Mega is a Mega 2560. No other shields connected. Program is based on UTFT/UTouch, and the examples provided for 1X do not download either.

Jim
41  Development / Suggestions for the Arduino Project / Re: Independent GUI windows on: June 10, 2013, 07:31:41 pm
Try running two simultaneous instances of Arduino.

Jim
42  Using Arduino / Displays / Error with compile with 3.23"LCD/touchscreen on: June 10, 2013, 12:42:56 pm
I bought a LCD/touchscreen off ebay. The software provided only addresses the LCD, and works. I found a touchscreen example on the web,but it is an ino file and will compile but I have the wrong version of the board for the LCD portion and it wont work. I renamed as a pde file and changed it to use WProgram.h instead of Arduino.h. It gives one error on line 24, " ITDB32S was not declared in this scope". I searched Arduino.h but it is never declared there. I have no idea where it is declared, or what type it is. Sinceyou need the special liubrarys I put the wqhole thing up on my
43  Community / Bar Sport / Re: Are you a generalist or specialist? on: March 06, 2013, 10:09:00 pm
I always liked the definition I was given by my high school calculus teacher!

A specialist learns more and more about less and less until he knows everything about nothing. A generalist learns less and less about more and more until he knows nothing about everything.

Jim
44  Using Arduino / Project Guidance / Re: Help with RTC on: February 25, 2013, 09:10:37 pm
Thanks to both Nick and John. After seeing the schematic, I OHMed it out. Your both absolutely right!

Jim
45  Using Arduino / Project Guidance / Help with RTC on: February 25, 2013, 03:40:41 pm
Some time ago I bought this

http://www.ebay.com/itm/I2C-DS1307-Real-Time-Clock-Module-For-Arduino-Tiny-RTC-2560-UNO-R3-New-/271028224375?pt=LH_DefaultDomain_0&hash=item3f1a8a8177.

After testing it, I put it in my parts bin for a planned project that never happened. Now I am thinking using it with my Raspberry Pi. It seems straight forward except for the pin labeled DS. I combed the net for a schematic with no result. I'm hoping you experts can shed some light on this.

Hopefully Jim
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