Go to advanced search

by pigsfoot
Tue May 21, 2019 8:46 am
Forum: Automation, sensing and robotics
Topic: Magnetometer Project
Replies: 7
Views: 1950

Re: Magnetometer Project

Hi all, Thanks for the replies and feedback. I do understand that magnetometer are not necessarily designed to detect cars, but thats doesn't mean they wont and to be fair thats half the fun, making something do what it wasn't initially intended to do :-). Using something like a magnetometer also al...
by pigsfoot
Mon May 20, 2019 2:49 pm
Forum: Automation, sensing and robotics
Topic: Magnetometer Project
Replies: 7
Views: 1950

Magnetometer Project

Hi, I'm trying to come up with a RPI based platform that can use a Magnetometer to detect vehicle presence. The idea is to be able to calibrate the Magnetometer so that it only detects a magnetic field of X, X being the magnetic field of a small vehicle so it doesn't report on things like bikes, pus...
by pigsfoot
Sun Apr 21, 2019 1:50 pm
Forum: Beginners
Topic: Digital pin is configured as an input and pulled high
Replies: 7
Views: 621

Re: Digital pin is configured as an input and pulled high

Thank you so much @hippy, much appreciated. I'll get onto the manufacturer and get one of the sensors ordered now i know it should all work I think they said it'll take a week or so to get it made for me so i may well be back but hopefully the info you have provided should be more than enough for me...
by pigsfoot
Sun Apr 21, 2019 1:13 pm
Forum: Beginners
Topic: Digital pin is configured as an input and pulled high
Replies: 7
Views: 621

Re: Digital pin is configured as an input and pulled high

perfect, thanks @hippy, i appreciate the help and guidance. The sensor is kind of being custom made for me based on a hash up of other solutions the manufacturer already does, its all part of an open university course i'm doing. What they have said is the connection will be via an "open collect...
by pigsfoot
Sun Apr 21, 2019 12:33 pm
Forum: Beginners
Topic: Digital pin is configured as an input and pulled high
Replies: 7
Views: 621

Re: Digital pin is configured as an input and pulled high

Hi @Hippy, Thank you for the explanation, much appreciated and i think i understand a little more now. So when the sensor is not reading anything the GPIO pin will read as low or 0 volts as it is being pushed. When the sensor detects a change in the magnetic filed we need to have a relay which defin...
by pigsfoot
Sun Apr 21, 2019 10:21 am
Forum: Beginners
Topic: Digital pin is configured as an input and pulled high
Replies: 7
Views: 621

Digital pin is configured as an input and pulled high

Hi All, I am working with a sensor that needs to be able to communicate directly with a server which is cloud based, unfortunately the sensor has no communication method of connecting to the web so i am looking to use an RPI and a medium as it can be connected to the GPIO pins on the Pi. I have spok...
by pigsfoot
Tue Feb 19, 2019 5:59 pm
Forum: Automation, sensing and robotics
Topic: measure power useage
Replies: 4
Views: 860

measure power useage

Hi, I run a project where we set up temporary computer environments for gaming. We connect banks of computers via an industrial 32amp 3 pin sockets, similar to these - https://www.amazon.co.uk/Trailing-Caravan-Garage-Generator-Single-x/dp/B00E20V0M6 I wont go into to much detail re the cabling, sock...
by pigsfoot
Sun Dec 16, 2018 12:31 pm
Forum: Beginners
Topic: DNS being changed, do i need to rebooot?
Replies: 1
Views: 220

DNS being changed, do i need to rebooot?

Hi, We have several RPI's installed in remote locations and the all check into a management server every 4 hours via a DNS Address. Some use Wifi, other Ethernet and some on 4G. All use google's DNS server address. The IP that the DNS points to is being changed ( we are moving the server ) and there...
by pigsfoot
Sun Jun 24, 2018 12:27 pm
Forum: Wanted
Topic: Engineer needed to build breakout boards - Old "AirPi" project
Replies: 9
Views: 6895

Engineer needed to build breakout boards - Old "AirPi" project

Hi, ** Upfront disclosure ** This is a business requirement for which we are expecting to pay for a service I run a business where we provide data to our customers on various applications and data sets ( happy to go into more detail if / when i find someone to work with ). We have a new application ...
by pigsfoot
Mon May 15, 2017 4:32 pm
Forum: HATs and other add-ons
Topic: Cellular Hat / Sheild
Replies: 0
Views: 572

Cellular Hat / Sheild

Hi, I have a project where i need to develop a working RPI system into using a cellular connection. At present our RPI's all connect over WiFi and report back to a cloud based DB but the new project means we won't have any WiFi infrastructure. Although i see the benefits of a USB dongle ( including ...
by pigsfoot
Wed Aug 24, 2016 11:06 am
Forum: HATs and other add-ons
Topic: S8050 NTP Transistor alternative for 5v Dc Fan
Replies: 4
Views: 2902

Re: S8050 NTP Transistor alternative for 5v Dc Fan

Wow... great explanation, Thank you @Burngate.

I'll get all the bits a give it a go.

Thanks for the help and for a great explanation.
by pigsfoot
Wed Aug 24, 2016 8:57 am
Forum: HATs and other add-ons
Topic: S8050 NTP Transistor alternative for 5v Dc Fan
Replies: 4
Views: 2902

Re: S8050 NTP Transistor alternative for 5v Dc Fan

@Burngate, many thanks for the input, much appreciated just what i needed. I'll pop down to Maplins and pick up a couple of the N2551's. Re the resistor, I have looked at Maplins site and they seem to be measured in Ohm's, I'm sorry to ask but could you recommend which one i need http://www.maplin.c...
by pigsfoot
Tue Aug 23, 2016 6:21 pm
Forum: HATs and other add-ons
Topic: S8050 NTP Transistor alternative for 5v Dc Fan
Replies: 4
Views: 2902

S8050 NTP Transistor alternative for 5v Dc Fan

Hi, I have been reading this post - https://hackernoon.com/how-to-control-a-fan-to-cool-the-cpu-of-your-raspberrypi-3313b6e7f92c#.vgk16kpmx As I'm looking to have a temp controlled fan for my Pi3. Only problem is i have no experience with electronics and i have been looking for a S8050 NTP transisto...
by pigsfoot
Fri Aug 05, 2016 7:24 am
Forum: General discussion
Topic: Load rpi image in windows to allow editing
Replies: 6
Views: 15921

Re: Load rpi image in windows to allow editing

Thanks everyone for the replies. The files i need to edit are in the /opt/ folder and also the /etc/hostname. Unfortunately these are specific to every image i create so can't be added to the main image. I have just had a quick look at the SD card when in my USB reader and the files i need to get to...
by pigsfoot
Thu Aug 04, 2016 10:29 pm
Forum: Wanted
Topic: UK-based experience Pi programmer needed
Replies: 6
Views: 2923

Re: UK-based experience Pi programmer needed

I cant help directly but would suggest posting a job on freelancer.co.uk for a phython programmer. You will get lots of replies, just pick the right one for you and test the water. I use freelancer a lot and there are a lot of good developers on there... and several that say there good but unfortuna...
by pigsfoot
Thu Aug 04, 2016 10:22 pm
Forum: General discussion
Topic: Load rpi image in windows to allow editing
Replies: 6
Views: 15921

Load rpi image in windows to allow editing

Hi, I image quite a number of rpi's and once imaged I then have to edit several files so that the sd card boots correctly for my setup. Normally, in an office enviroment I would do this via the rpi with a screen and keyboard on first boot and then reboot. However I was wondering if there is a way to...
by pigsfoot
Fri Feb 19, 2016 8:58 pm
Forum: HATs and other add-ons
Topic: just checking... before i blow my RPi up
Replies: 5
Views: 1130

Re: just checking... before i blow my RPi up

Good news... the setting has worked :D

I now have both the TP Link and Huawei 3g USB dongles plugged in and working.. along with a keyboard

Thanks for the help... much appreciated.
by pigsfoot
Fri Feb 19, 2016 8:55 pm
Forum: HATs and other add-ons
Topic: just checking... before i blow my RPi up
Replies: 5
Views: 1130

Re: just checking... before i blow my RPi up

DOH... sorry guys.. yes 2mA is a typo... the power supply i am using is indeed 2 amps :-)

The OS is Kali.. just checked and there was no config.txt file so just created on via nano and added the line into it... RPI is rebooting now... fingers crossed

Thanks for the feedback
by pigsfoot
Fri Feb 19, 2016 8:42 pm
Forum: HATs and other add-ons
Topic: just checking... before i blow my RPi up
Replies: 5
Views: 1130

just checking... before i blow my RPi up

Hi, I have run into a small issue in that i have run out of power for USB devices on my RPi2 I need to run a USB WiFi Dongle... not the micro one a TP Link TL-WN722N and also a Huawei 3G USB Modem. The problem i have is with both plugged in the 3G modem just dies and doesn't get enough power to dial...
by pigsfoot
Mon Feb 15, 2016 2:10 pm
Forum: HATs and other add-ons
Topic: POE Board
Replies: 7
Views: 2231

Re: POE Board

Sorry, I looked at that and instantly presumed it was the same as the other option where you have a converter each end.

If that literally takes a POE feed from a switch and then has Ethernet AND power to micro USB it will be perfect.

I'll order one now and have a play.

Many Thanks
by pigsfoot
Mon Feb 15, 2016 1:54 pm
Forum: HATs and other add-ons
Topic: POE Board
Replies: 7
Views: 2231

Re: POE Board

Hi Gents, Thanks for the links to the various options. Unfortunately the "dongle" type adapters wouldn't work for me. At some point they will need a plug to inject the power into the dongle, along a CAT5 lead and then reconvert to Ethernet and power. We are already using POE switches that ...
by pigsfoot
Sun Feb 14, 2016 11:53 am
Forum: HATs and other add-ons
Topic: POE Board
Replies: 7
Views: 2231

POE Board

Hi, I am looking for a POE solution to the RPi, however i would prefer to not use a HAT. The solution i am building requires the install to be as thin as possible and a HAT would ultimately increase the height to much. I have found this on my search of the internet - http://www.silvertel.com/22-late...

Go to advanced search