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by ibwev
Mon Feb 13, 2017 6:06 am
Forum: Beginners
Topic: Run Program at Startup
Replies: 2
Views: 1655

Run Program at Startup

Once I plug in the Raspberry Pi, I would like a program to execute without logging into the Pi. I followed this tutorial http://raspberrypi.stackexchange.com/questions/8734/execute-script-on-start-up and followed "works on bootup to the console". I followed this tutorial to fix the inserv error http...
by ibwev
Sun Jan 29, 2017 7:45 pm
Forum: Advanced users
Topic: Mystery repeating loop
Replies: 8
Views: 1232

Re: Mystery repeating loop

PhilE wrote:Resubmitted without the Disable BBCode option.
Thank you for the help. I saw it didn't display correctly but I didn't know what to do. I see the BBCode option to the right of this reply message. I now know what to look for next time.
by ibwev
Sun Jan 29, 2017 1:50 am
Forum: Advanced users
Topic: Mystery repeating loop
Replies: 8
Views: 1232

Mystery repeating loop

When I power an RF Transmitter attached to an aduino, I am successfully sending text messages via an RF Receiver connected to a Raspberry Pi that has a GSM module attached to it. The RF sniffing code on the Raspberry Pi waits for a transmission from the RF Transmitter before sending a text. However,...
by ibwev
Mon Jan 23, 2017 4:27 am
Forum: Beginners
Topic: Read ASCII library
Replies: 12
Views: 1900

Re: Read ASCII library

I am receiving the error message in the attached pic. Please help me understand why I am getting an import error. I tried to execute the code using 'python filename'. It should be './filename' from the directory the executable file is stored in. I finally got the Raspberry Pi to receive a signal fr...
by ibwev
Sun Jan 22, 2017 3:14 am
Forum: Beginners
Topic: Read ASCII library
Replies: 12
Views: 1900

Re: Read ASCII library

Joan, thank you so much for your help. I am repeatedly seeing your name in many of the sources I am researching on RF communication. I really appreciate all the contributions you have made on this topic. I am not sure if RadioHead can be compatible with the earlier Virtual Wire module which once rul...
by ibwev
Fri Jan 20, 2017 3:05 am
Forum: Beginners
Topic: Read ASCII library
Replies: 12
Views: 1900

Re: Read ASCII library

The receive side (Arduino to Pi) is trivial According to pigpio documentation pigpio is a Python module for the Raspberry . Can I use pigpio on the Raspberry Pi to receive the message from the Aduino? I am currently using RadioHead module on the Aduino. the Pi's GPIO are 3V3, the Arduinos are typic...
by ibwev
Thu Jan 19, 2017 12:47 pm
Forum: Beginners
Topic: Read ASCII library
Replies: 12
Views: 1900

Re: Read ASCII library

Why mention SSH and putty? Are they relevant to the serial data you want to pass between the Arduino and the Pi? I would like to be able to verify that the Pi is receiving the appropriate data from the Aduino. SSH and putty should have no affect on the serial data I want to pass between the Arduino...
by ibwev
Thu Jan 19, 2017 12:00 pm
Forum: Beginners
Topic: Read ASCII library
Replies: 12
Views: 1900

Read ASCII library

Please recommend a library, preferably written in Python, to read ASCII characters on any suitable pin other than Pin 10 (RX) of the Raspberry Pi 3. I would like to be able to SSH into my Pi using Putty and read ASCII characters that an Aduino sends to a given pin on the Pi.
by ibwev
Wed Jan 18, 2017 2:50 am
Forum: General programming discussion
Topic: Troubleshoot input RPi
Replies: 5
Views: 1490

Re: Troubleshoot input RPi

Too much noise? This is my first time to work with an RF Receiver. The below picture was taken without the transmitter powered. Is it possible to tell from the picture if the receiver is receiving too much noise? NoiseGPIO27.png Try http://abyz.co.uk/rpi/pigpio/examples.html#pdif2__433D How does th...
by ibwev
Tue Jan 17, 2017 1:26 pm
Forum: General programming discussion
Topic: Troubleshoot input RPi
Replies: 5
Views: 1490

Re: Troubleshoot input RPi

joan wrote:Run http://abyz.co.uk/rpi/pigpio/piscope.html to view GPIO activity at the Pi.
I have followed the directions and am receiving noise on GPIO 27. When I power the receiver, the pattern changes on piscope.

Why am I not receiving a string when I run?

Code: Select all

sudo ~/433Utils/RPi_utils/RFSniffer
by ibwev
Mon Jan 16, 2017 4:58 am
Forum: General programming discussion
Topic: Troubleshoot input RPi
Replies: 5
Views: 1490

Troubleshoot input RPi

I have connected Pin 14 of ProMicro https://www.sparkfun.com/products/12640 (Pin 10 http://cdn.sparkfun.com/datasheets/Dev/Arduino/Boards/Pro_Micro_v13b.pdf of JP6) to Pin 13 (GPIO 27 https://az835927.vo.msecnd.net/sites/iot/Resources/images/PinMappings/RP2_Pinout.png ) of Raspberry Pi 3 . I am usin...
by ibwev
Wed Jan 04, 2017 12:05 pm
Forum: General discussion
Topic: Raspberry Pi 3 Datasheet
Replies: 5
Views: 3192

Re: Raspberry Pi 3 Datasheet

Thank you for the help. That is exactly what I was looking for.
by ibwev
Wed Jan 04, 2017 11:51 am
Forum: General discussion
Topic: Raspberry Pi 3 Datasheet
Replies: 5
Views: 3192

Re: Raspberry Pi 3 Datasheet

Heater wrote:Thou shalt not exceed 3.3v on any GPIO pin.
Thanks for the help and quick response. Is there an official publication containing the specs of GPIO pins that I can reference?
by ibwev
Wed Jan 04, 2017 11:38 am
Forum: General discussion
Topic: Raspberry Pi 3 Datasheet
Replies: 5
Views: 3192

Raspberry Pi 3 Datasheet

I am trying to find an official publication regarding the max input voltage on the GPIO pins of the Raspberry Pi 3. When googling for the answer, I find lots of unofficial sites that do not address what I am looking for. Please direct me to an official publication that answers the above question. I ...
by ibwev
Wed Nov 30, 2016 2:09 am
Forum: Troubleshooting
Topic: Switch UART on RPi3
Replies: 1
Views: 612

Re: Switch UART on RPi3

I did not figure out how to switch the port but I got the GSM working. Please refer to this post viewtopic.php?f=28&t=166935&p=1075183#p1075183.
by ibwev
Wed Nov 30, 2016 2:06 am
Forum: Troubleshooting
Topic: GSM Send Text Fail
Replies: 2
Views: 816

Re: GSM Send Text Fail

SOLVED There is a discrepancy with the wiring schematic in the sample code http://itbrainpower.net/a-gsm/RaspberryPI-gsm-shield-library-powerOnOff-demo-code-a-gsm and the wiring schematic from the manufacturer http://itbrainpower.net/a-gsm/images/RaspberyPI_a-gsm_shield-wiring.png. #name RPi a-gsm s...
by ibwev
Tue Nov 29, 2016 9:56 pm
Forum: Troubleshooting
Topic: Switch UART on RPi3
Replies: 1
Views: 612

Switch UART on RPi3

I am desperately trying to setup GSM with Raspberry Pi 3. I think I am having a port issue so I am trying to switch UART0 and UART1. I have read, watched, and followed numerous tutorials and have yet to be successful. My last attempt consisted of putting enable_uart=1 dtoverlay=pi3-disable-bt #disab...
by ibwev
Tue Nov 29, 2016 5:12 am
Forum: Troubleshooting
Topic: GSM Send Text Fail
Replies: 2
Views: 816

GSM Send Text Fail

I am trying to send a text using a-gsm shield with Raspberry Pi 3. I am using sample python code that came with the GSM to attempt to send the text and am receiving the following error: ^CTraceback (most recent call last): File "./sendSMS.py", line 96, in <module> res = sendSMS(destinationNumber, "1...
by ibwev
Thu Nov 17, 2016 10:53 pm
Forum: Troubleshooting
Topic: RPi3 enable ttyS0
Replies: 4
Views: 7908

Re: RPi3 enable ttyS0

Thank you so much for the help. The port is working. Apparently I did not restart the last time I commented out "enable_uart=0". This time I removed that line, then restarted, and now it works. You have solved a problem that I have been googling for days.
by ibwev
Thu Nov 17, 2016 12:32 pm
Forum: Troubleshooting
Topic: RPi3 enable ttyS0
Replies: 4
Views: 7908

Re: RPi3 enable ttyS0

uname -a Linux Van_RPi3 4.4.26-v7+ #915 SMP Thu Oct 20 17:08:44 BST 2016 armv7l GNU/Linux grep uart /boot/config.txt enable_uart=0 enable_uart=1 I have tried "enable_uart=0" both commented and uncommented cat /boot/cmdline.txt dwc_otg.lpm_enable=0 console=tty1 root=/dev/mmcblk0p7 rootfstype=ext4 el...
by ibwev
Thu Nov 17, 2016 5:59 am
Forum: Troubleshooting
Topic: RPi3 enable ttyS0
Replies: 4
Views: 7908

RPi3 enable ttyS0

I have followed this tutorial http://spellfoundry.com/2016/05/29/configuring-gpio-serial-port-raspbian-jessie-including-pi-3/ to establish serial communication with my RPi3. When I enter ls -l /dev neither ttyS0 nor serial0 is listed. I put enable_uart=1 at the last line of /boot/config.txt but afte...
by ibwev
Tue Nov 15, 2016 8:31 pm
Forum: Troubleshooting
Topic: GSM setup- opened port
Replies: 0
Views: 278

GSM setup- opened port

I have connected a-gsm shield http://itbrainpower.net/a-gsm/downloadables/a-gsm-series-presentation-v1.01.pdf with RPi3. I have imported and attempted to execute power on code ############################################## # this utility must be runned as root (just use: sudo python powerOnOff.py) s...
by ibwev
Mon Nov 14, 2016 3:22 am
Forum: Other projects
Topic: GSM setup- opened port error message
Replies: 0
Views: 318

GSM setup- opened port error message

I have connected a-gsm shield http://itbrainpower.net/a-gsm/downloadables/a-gsm-series-presentation-v1.01.pdf with RPi3. I have imported and attempted to execute the power on code http://itbrainpower.net/a-gsm/RaspberryPI-gsm-shield-library-powerOnOff-demo-code-a-gsm . However, I am getting the foll...
by ibwev
Fri Jul 22, 2016 12:05 pm
Forum: Beginners
Topic: i2c module
Replies: 4
Views: 864

Re: i2c module

unless you are trying to read a hat eeprom. I am reading a HAT EEPROM Then you will have to enable i2c0 on pins 27,28 Please point me to a tutorial or show me how to do this. Which tutorial? I have not made it far through the tutorial but the one I am currently attempting is: https://www.youtube.co...
by ibwev
Fri Jul 22, 2016 5:18 am
Forum: Beginners
Topic: i2c module
Replies: 4
Views: 864

i2c module

I am attempting to follow a tutorial on using EEPROM and am having trouble with the first step. I think I am having trouble loading the i2c module for the Raspberry Pi 3. After trying to load the i2c module, I am still receiving "Error: Could not open file `/dev/i2c-0' or `/dev/i2c/0': No such file ...

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