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by richiepp
Thu Mar 06, 2014 3:05 pm
Forum: General discussion
Topic: The $200 RasPi
Replies: 8
Views: 1588

Re: The $200 RasPi

Looks interesting. Makes me want to start hacking on Z Wave.
by richiepp
Wed Mar 05, 2014 5:20 am
Forum: Python
Topic: pyserial to Arduino....Ugh!
Replies: 16
Views: 4301

Re: pyserial to Arduino....Ugh! (SOLVED)

Hey All, After what seems like forever I've figured out how to hold the serial port open. It's a Linux program called Screen that allows you to run different screens in the background and toggle between them. Here's a quick overview of screen http://www.rackaid.com/blog/linux-screen-tutorial-and-how...
by richiepp
Fri Feb 28, 2014 2:06 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Multiple voltage with one power supply
Replies: 2
Views: 1617

Re: Multiple voltage with one power supply

I'm running a 12V power supply and converting some of it to 5V using one of these http://www.eachbuyer.com/dc-dc-converter-regulator-12v-24v-step-down-to-5v-power-supply-module-p188991.html?currency=USD&utm_source=google&utm_medium=CSE&utm_content=%5BCar+Accessories%5D&utm_campaign=%5BPLA%5DAmerica(...
by richiepp
Fri Feb 28, 2014 1:40 pm
Forum: Beginners
Topic: Python
Replies: 4
Views: 576

Re: Python

by richiepp
Thu Feb 27, 2014 3:15 pm
Forum: Wolfram Language
Topic: Looking for simple Wolfram GPIO button
Replies: 2
Views: 10154

Re: Looking for simple Wolfram GPIO button

Perfect! Thanks so much.
by richiepp
Thu Feb 27, 2014 2:34 pm
Forum: Wolfram Language
Topic: Looking for simple Wolfram GPIO button
Replies: 2
Views: 10154

Looking for simple Wolfram GPIO button

Is there a way to control the GPIO with a button using Wolfram? Something simple like turning a pin high and low. If so are there any tutorials as to how to do so?

Thanks
Rich
by richiepp
Wed Feb 26, 2014 6:42 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Connect to SD Card
Replies: 4
Views: 815

Re: Connect to SD Card

I've had this same question with a Raspberry Pi connected to Arduino with SD card via usb. I'd like to record data on the SD card as a text file and read it from the Pi. Can this be done with serial?

Thanks
Rich
by richiepp
Tue Feb 25, 2014 6:38 pm
Forum: Wolfram Language
Topic: Wolfram Alpha looks really cool
Replies: 3
Views: 9378

Re: Wolfram Alpha looks really cool

Cool I'm installing it now and it's big, almost 600MB, I'm glad I have a 16GB card.

Can't wait to try some of the graphing features in Wofram!
by richiepp
Tue Feb 25, 2014 5:09 pm
Forum: Wolfram Language
Topic: Wolfram Alpha looks really cool
Replies: 3
Views: 9378

Wolfram Alpha looks really cool

Hey All, I just discovered Wolfram Alfpha and it looks amazing! http://venturebeat.com/2014/02/24/knowledge-based-programming-wolfram-releases-first-demo-of-new-language-30-years-in-the-making/ I would love to start playing with Wolfram Alpha on the Pi but don't know where to start. I see in the art...
by richiepp
Tue Feb 18, 2014 7:01 pm
Forum: Other programming languages
Topic: Run Picocom in the background
Replies: 2
Views: 2713

Re: Run Picocom in the background

How can I keep the serial port open and available for PHP and other web applications?

Thanks
Rich
by richiepp
Tue Feb 18, 2014 7:00 pm
Forum: Other programming languages
Topic: Run Picocom in the background
Replies: 2
Views: 2713

Run Picocom in the background

I have some PHP that sends serial messages to an Arduino. To get it to work I need to, or so it seems, to have a serial terminal open on the pi. I'm using Picocom which I can run in the background by typing picocom /dev/ACM0 & After that the PHP communicates with the Arduino through serial. But if I...
by richiepp
Tue Feb 18, 2014 6:40 pm
Forum: Python
Topic: Give PHP permission to open serial port
Replies: 3
Views: 1556

Re: Give PHP permission to open serial port

Thanks Dougie! I've been struggling with this problem for many weeks and now I'm one step closer. Much appreciated!

Rich
by richiepp
Tue Feb 18, 2014 3:05 pm
Forum: Python
Topic: Give PHP permission to open serial port
Replies: 3
Views: 1556

Give PHP permission to open serial port

I've got a python script that sends characters over the serial port to an Arduino Mega. I can get the script to run from the command line but when I try to call it from PHP I get the following error message. Traceback (most recent call last): File "cgi-bin/serial-to-arduino.py", line 4, in <module> ...
by richiepp
Tue Feb 18, 2014 2:55 pm
Forum: Python
Topic: differential of a temperature sensor curve
Replies: 8
Views: 1447

Re: differential of a temperature sensor curve

You may want to consider using Google docs and load to a spreadsheet. You could get started here http://learn.adafruit.com/dht-humidity-sensing-on-raspberry-pi-with-gdocs-logging/connecting-to-google-docs I'm currently using Xively which is a service that graphs my DS18b20 sensors. This company was ...
by richiepp
Sat Feb 15, 2014 6:54 pm
Forum: Raspberry Pi OS
Topic: Setting Up the SD Card
Replies: 7
Views: 1448

Re: Setting Up the SD Card

I've done it with a brand new card without first formatting. Be sure to expand the partition when you first log on.

Good Luck!
Rich
by richiepp
Sat Feb 15, 2014 6:53 pm
Forum: Python
Topic: pyserial to Arduino....Ugh!
Replies: 16
Views: 4301

Re: pyserial to Arduino....Ugh!

I thought I'd format a card and start from scratch but I have so much invested in this image I'd like to figure it out. I've learned that I can run the serial terminal in the background sudo picocom & However I can't seem to get this start at reboot. With this running in the bacground I can call scr...
by richiepp
Tue Feb 11, 2014 2:04 pm
Forum: Java
Topic: Reading from USB port
Replies: 2
Views: 3786

Re: Reading from USB port

You'll probably want to use serial communication. There is a lot of documentation out there about linking an Arduino to a Pi. I suggest starting there.

Good Luck!
Rich
by richiepp
Tue Jan 21, 2014 11:47 pm
Forum: General discussion
Topic: How to make the Pi faster?
Replies: 28
Views: 12848

Re: How to make the Pi faster?

I've read it can be boosted up to 800Mhz and in some cases 900Mhz. Search around this forum and the web and you'll find a bunch of stuff. I'm considering bringing mine up to 800mhz.

Good Luck!
Rich
by richiepp
Mon Jan 06, 2014 4:16 pm
Forum: Python
Topic: pyserial to Arduino....Ugh!
Replies: 16
Views: 4301

Re: pyserial to Arduino....Ugh!

I would try a fresh install of the OS on to your SD card.
Yeah that's what I'm starting to think.....not my favorite solution but I guess that's how it goes.
by richiepp
Mon Jan 06, 2014 4:10 pm
Forum: Python
Topic: pyserial to Arduino....Ugh!
Replies: 16
Views: 4301

Re: pyserial to Arduino....Ugh!

It appears I do have some python issues but these errors don't come up when I'm trying to run the python script with the terminal closed. Below is from my error log not sure how to interpret it. [Mon Jan 06 06:17:31 2014] [error] python_init: Python version mismatch, expected '2.7.2+', found '2.7.3'...
by richiepp
Mon Jan 06, 2014 4:00 pm
Forum: Python
Topic: pyserial to Arduino....Ugh!
Replies: 16
Views: 4301

Re: pyserial to Arduino....Ugh!

Yes
by richiepp
Mon Jan 06, 2014 2:20 pm
Forum: Python
Topic: pyserial to Arduino....Ugh!
Replies: 16
Views: 4301

Re: pyserial to Arduino....Ugh!

I'm just trying to send a '0' with the python script which works, see the video above. The problem is I can't send a signal if the serial terminal is closed. I need the python script to take control of the port and send/receive over it. I feel like I've read every thread and tutorial on this but sti...
by richiepp
Sun Jan 05, 2014 2:58 pm
Forum: Python
Topic: pyserial to Arduino....Ugh!
Replies: 16
Views: 4301

Re: pyserial to Arduino....Ugh!

Still stuck on this. I've scoured the web and as far as I can tell I've got everything configured to make this work. Are there any diagnostic tools I can use?

Stuck!
by richiepp
Sun Jan 05, 2014 12:56 am
Forum: Python
Topic: pyserial to Arduino....Ugh!
Replies: 16
Views: 4301

Re: pyserial to Arduino....Ugh!

Yep I edited it down to this

dwc_otg.lpm_enable=0 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait

But still not able to run the script without having the terminal open. Hmmmm.......
by richiepp
Sun Jan 05, 2014 12:40 am
Forum: Python
Topic: pyserial to Arduino....Ugh!
Replies: 16
Views: 4301

Re: pyserial to Arduino....Ugh!

I found this and gave it a try but it didn't work

http://www.irrational.net/2012/04/19/us ... rial-port/

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