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by mathewjenkinson
Tue Mar 05, 2019 9:48 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Whats the best way to flat mount the Pi Zero to another PCB?
Replies: 1
Views: 211

Whats the best way to flat mount the Pi Zero to another PCB?

Im trying to take advantage of the Pi Zero's very slim Z axis profile and embed the board onto another PCB. I want to expose both the GPIO pins and the USB to the 'host' board. The GPIO's are easy, but Im trying to find a micro-usb male thats horizontal. Here's an example of the socket in a vertical...
by mathewjenkinson
Tue Feb 12, 2019 3:57 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Sourcing a Micro USB 5P SMT Male type Connector?
Replies: 3
Views: 252

Sourcing a Micro USB 5P SMT Male type Connector?

Hi all, Im looking to build the RPi Zero into a bigger board and need to find a Micro USB Male connector for the Power and USB sockets that are on the PI (Zero). I've seen a few companies advertise what I need on sites like Alibaba, but does anyone know if this connector actually exists and has a pa...
by mathewjenkinson
Wed Feb 18, 2015 11:20 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: HDMI Eagle Library?
Replies: 1
Views: 1281

HDMI Eagle Library?

Hi all, Has anyone seen / got a HDMI Library for Eagle PCB? Im looking for the HDMI PCB socket, I can find plenty of the components but not a library for it in Eagle. - If I download the board from OpenPi I can see the part on the board but Im looking for the whole library. Does one exist anywhere? ...
by mathewjenkinson
Thu Nov 06, 2014 10:13 am
Forum: Automation, sensing and robotics
Topic: WebRTC Creeper Drone - Browser Controlled RC Car
Replies: 1
Views: 2266

Re: WebRTC Creeper Drone - Browser Controlled RC Car

Wow! Thats so cool!
Well done for this build and the guide.

Thanks
Mathew
by mathewjenkinson
Sat Oct 18, 2014 8:36 am
Forum: HATs and other add-ons
Topic: Best way / place to get PCB design help?
Replies: 2
Views: 720

Best way / place to get PCB design help?

Hi all, I've been building an add-on board for an home project, I've been able to place the LED's, thermal probes and accelerometer without issue (go me!). As the project has developed I've had to add a USB hub. I had two prototype's made both of which failed on the USB part. I'm now a bit stuck as ...
by mathewjenkinson
Mon Jun 16, 2014 8:07 am
Forum: Python
Topic: Python Script crashes after 12 hours?
Replies: 4
Views: 1156

Re: Python Script crashes after 12 hours?

Ahhhh! *lightbulb moment.*

OK thanks very much, I shall investigate now.
by mathewjenkinson
Mon Jun 16, 2014 7:53 am
Forum: Python
Topic: Python Script crashes after 12 hours?
Replies: 4
Views: 1156

Re: Python Script crashes after 12 hours?

Hi Joan,

Thanks for the reply, "Have a look at top as your script... " Whats top?

Thanks
Mathew
by mathewjenkinson
Mon Jun 16, 2014 7:02 am
Forum: Python
Topic: Python Script crashes after 12 hours?
Replies: 4
Views: 1156

Python Script crashes after 12 hours?

Hi All, I have a Pi setup to read three thermal probes and HTTP POST the data to an endpoint. Its setup to take measurements, send the data then go to sleep for 10 mins before taking new measurements posting those and going back to sleep again. This all works fine until the script gets to about 12 h...
by mathewjenkinson
Wed Jun 04, 2014 5:15 pm
Forum: Networking and servers
Topic: MultiPath Routing?
Replies: 0
Views: 591

MultiPath Routing?

Hi all, I'm working on a project where I want to use two internet connections and a raspberry pi as a router. - So I have 2 USB 3g dongles and a raspberry PI and a Wifi USB dongle (and a usb hub) I want to use to use the Pi as a router to make a Wifi network that shares the two 3g connections. A qui...
by mathewjenkinson
Mon May 12, 2014 7:44 am
Forum: Compute Module
Topic: Price?
Replies: 4
Views: 1992

Re: Price?

At the moment Im hacking Model A's down, so I was wondering what the price difference between the two is and if its worth switching from Model A to the board.

Thanks
Mathew
by mathewjenkinson
Mon May 12, 2014 6:08 am
Forum: Compute Module
Topic: Price?
Replies: 4
Views: 1992

Price?

Hi all,

Ive searched everywhere though element 14's pages about the CM board but I can't find a unit cost anywhere?
Does anyone have the link / cost per board?

Thanks
Mathew
by mathewjenkinson
Thu Oct 10, 2013 8:54 am
Forum: Python
Topic: Flashing an LED while code runs
Replies: 1
Views: 637

Flashing an LED while code runs

Hi all, I have an led and a thermal probe hooked up to my Pi. The LED is assigned to pin 20 and the probe to Pin 7. I want the LED to flash while the rest of the script runs. As this involves turning on and off the pin driving the LED, whats the best way to accomplish this? Something like: while the...
by mathewjenkinson
Wed Oct 02, 2013 10:12 pm
Forum: Python
Topic: python loop
Replies: 3
Views: 3612

Re: python loop

Hi Paddyg

Many thanks!

Just so i understand, the loop script will run anything that is indented after that loop ie:

Code: Select all

for cycle_count in range(5):
  this is in the loop

and this bit isnt?
by mathewjenkinson
Wed Oct 02, 2013 9:39 pm
Forum: Python
Topic: python loop
Replies: 3
Views: 3612

python loop

Hi all, I have a Pi hooked up to a series of 4 LED's. I am able to get the 4 LED's to cycle from left to right but I want to be able to loop the cycle's to count 5 loops. currently the code is: cycle_count = 0 GPIO.output(red, True) sleep(0.5) GPIO.output(amber, True) sleep(0.5) GPIO.output(red, Fal...
by mathewjenkinson
Wed Oct 02, 2013 9:26 pm
Forum: Automation, sensing and robotics
Topic: Source code to w1-therm?
Replies: 41
Views: 33248

Re: Source code to w1-therm?

Hi all,

Has the GPIO hardwire'ed issue been recompiled?
Im stuck in the same position and would like to use w1-therm on a different pin.

many thanks!
Mathew
by mathewjenkinson
Wed Oct 02, 2013 8:47 pm
Forum: Troubleshooting
Topic: GPIO Pin 26 and DS18B20 temp sensor
Replies: 4
Views: 4747

Re: GPIO Pin 26 and DS18B20 temp sensor

Humm.. thats not good.. a) I didnt know that b) I have an accelerometer using pin 7 already. Do you know if I can reconfig the pi's pins to support gpio on 26? Or Does one wire support more than one device on Pin 7? As I was hoping to attach 3 temp sensors and pair it with data from the acceleromete...
by mathewjenkinson
Wed Oct 02, 2013 8:07 pm
Forum: Troubleshooting
Topic: GPIO Pin 26 and DS18B20 temp sensor
Replies: 4
Views: 4747

GPIO Pin 26 and DS18B20 temp sensor

Hi all, Im trying to get a one-wire DS18B20 temp sensor to communicate with my Pi via pin 26. Using the guide: http://www.cl.cam.ac.uk/projects/raspberrypi/tutorials/temperature/ Its marked on the wiring diagrams as SP10 CE1 N - or GPIO Pin 7 if you follow Gordons page about wiringPi : https://proje...
by mathewjenkinson
Thu Sep 19, 2013 9:27 am
Forum: Troubleshooting
Topic: Unable to find USB/TTY GPS unit
Replies: 10
Views: 14085

Re: Unable to find USB/TTY GPS unit

Hi all, Another update: USBACM0 is indeed my USB GPS unit, after a bit more googling and some trial and error i can now get GPSD to get gps data from the unit! :D Many thanks to DeeJay for the help! For those following the thread I'll put everything into a logical order for you to follow: Plug the U...
by mathewjenkinson
Thu Sep 19, 2013 8:55 am
Forum: Troubleshooting
Topic: Unable to find USB/TTY GPS unit
Replies: 10
Views: 14085

Re: Unable to find USB/TTY GPS unit

Quick update to this: from dmesg | grep -i tty The output showed my device as: "ttyACM0", piping this to: sudo cat /dev/ttyACM0 results in lots of GPS data being output, however when I try to pipe this to gpsd by: sudo gpsd /dev/ttyACM0 -F /var/run/gpsd.sock and then running: cgps -s results in a ti...
by mathewjenkinson
Thu Sep 19, 2013 8:46 am
Forum: Troubleshooting
Topic: Unable to find USB/TTY GPS unit
Replies: 10
Views: 14085

Re: Unable to find USB/TTY GPS unit

Hi, Thanks for the info. A quick Google on 'U-Blox AG' shows a website for a company who produce wireless comms chips inc GPS. The results from dmesg | grep -i tty [ 0.000000] Kernel command line: dma.dmachans=0x7f35 bcm2708_fb.fbwidth=1680 bcm2708_fb.fbheight=1050 bcm2708.boardrev=0xe bcm2708.seria...
by mathewjenkinson
Thu Sep 19, 2013 8:06 am
Forum: Troubleshooting
Topic: Unable to find USB/TTY GPS unit
Replies: 10
Views: 14085

Unable to find USB/TTY GPS unit

Hi all, Ive purchased a Gosget BU-373 USB GPS unit, in the hope of being able to pick up GPS signals via my pi. Using the command "sudo lsus "I can see the device registered as "Bus 001 Device 004: ID 1546:01a6 U-Blox AG" but I cant find it within /dev/ - i know im looking for /ttyUSB0 but none exis...
by mathewjenkinson
Tue Aug 20, 2013 10:17 am
Forum: Automation, sensing and robotics
Topic: Raspberry Pi GPIO data to mySQL
Replies: 7
Views: 5581

Re: Raspberry Pi GPIO data to mySQL

Im doing a similar project to do with temp and movement. It sounds like your separate mysql server is being hosted along with a web server in something like a LAMP config? If so you could write some PHP to capture the data you want and then insert into the mysql as a single statement. You could writ...
by mathewjenkinson
Thu Jun 13, 2013 2:16 pm
Forum: Automation, sensing and robotics
Topic: Sous Pi - Geekist cuisine
Replies: 3
Views: 1994

Re: Sous Pi - Geekist cuisine

yes please :)
and whats your fav dish? :D
by mathewjenkinson
Mon Jun 10, 2013 10:56 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Accessing ADXL345 accelerometer C\C++ (BCM2835 C library)
Replies: 2
Views: 3342

Re: Accessing ADXL345 accelerometer C\C++ (BCM2835 C library

Hi Arvigovi, Can you provide some assistance on the PinOut for ADXL345 into a Raspberry Pi? Following the walk through posted by Analog Devices specifically the Raspberry Pi bit, SDA goes to SDA (Pin 3), SCL goes to SDL (Pin 5), VCC to 3.3V and Gnd to Gnd but it doesnt specify where INT goes. I'm as...

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