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by ant_thomas
Tue Jun 03, 2014 5:24 pm
Forum: Troubleshooting
Topic: [SOLVED] BMP085 - how to set altitude?
Replies: 45
Views: 12803

Re: [SOLVED] BMP085 - how to set altitude?

I'm probably not getting my head around this properly. Just installed a BMP180 sensor (same code as BMP085) My altitude is constant (and known). Is it possible to set a constant altitude? Every reading is coming out with a different altitude, I kind of understand why, but I'd like to set a constant ...
by ant_thomas
Mon May 26, 2014 11:02 pm
Forum: Troubleshooting
Topic: Audio interference - Ground Loop - Power Supply - Issues
Replies: 10
Views: 9154

Re: Audio interference - Ground Loop - Power Supply - Issues

In case it's of any interest I've made some changes and got rid of one of the issues. First of all: WiFi makes no difference at all. I now have the RPi being powered by the original 5V converter and the amp powered by an LM2596S based converter. Both from the same 12V supply. When the audio cable is...
by ant_thomas
Mon May 26, 2014 9:19 am
Forum: Troubleshooting
Topic: Audio interference - Ground Loop - Power Supply - Issues
Replies: 10
Views: 9154

Re: Audio interference - Ground Loop - Power Supply - Issues

Thanks for the ideas.

I've now got a ground loop isolator on order.

Just trying to figure out what I need to do to clean up the power going into the amp.

Also read that the ethernet cable can cause a bad ground loop and that going to Wifi can help matters.
by ant_thomas
Sun May 25, 2014 10:51 am
Forum: Troubleshooting
Topic: Audio interference - Ground Loop - Power Supply - Issues
Replies: 10
Views: 9154

Re: Audio interference - Ground Loop - Power Supply - Issues

No change with force_pwm_open=0 added to config.txt

When the amp is connected to the RPi 5V/GND pins there is interference even without the 3.5mm cable connected.

When the 3.5mm cable is connected the interference gets louder.
by ant_thomas
Sun May 25, 2014 10:43 am
Forum: Troubleshooting
Topic: Audio interference - Ground Loop - Power Supply - Issues
Replies: 10
Views: 9154

Re: Audio interference - Ground Loop - Power Supply - Issues

I can confirm there's no interference/noises using headphones or connecting the CM108 to a totally different amplifier (my mains powered Onkyo surround amp). I'll add that line to config.txt next. The noises are various pitched squeaks rather than a constant hum. The squeaks seem to relate to USB/CP...
by ant_thomas
Sun May 25, 2014 10:07 am
Forum: Troubleshooting
Topic: Audio interference - Ground Loop - Power Supply - Issues
Replies: 10
Views: 9154

Audio interference - Ground Loop - Power Supply - Issues

Hello, I'm in the process of making a Raspberry Pi based "boombox" running Volumio. From a software POV this all works great. My issue lies with audio interference which seems to be related to power. Hopefully someone can point me in the right direction to correct it. I'm using the following hardwar...
by ant_thomas
Tue May 20, 2014 8:10 pm
Forum: HATs and other add-ons
Topic: To install bluetooth I've got to install 10 tons of cr*p?
Replies: 10
Views: 13156

Re: To install bluetooth I've got to install 10 tons of cr*p

The basic bluetooth stuff can be installed using : sudo apt-get install --no-install-recommends bluetooth A bit late here but had to say thanks for that tip. After installing all the other cups/printer rubbish which subsequently failed and caused a number of issues and took over 100MB (which was up...
by ant_thomas
Mon Jan 27, 2014 1:38 pm
Forum: Camera board
Topic: STICKY: New features for raspistill command
Replies: 106
Views: 119697

Re: New features for raspistill command

Would it be possible to add the ability to output the image at two sizes? For example a full resolution image then a smaller image (640x480) (or whatever the correct aspect ratio is). Using the GPU to do the resizing rather than using something like Imagemagick which is understandably fairly slow on...
by ant_thomas
Wed Jan 01, 2014 7:11 pm
Forum: Camera board
Topic: Pi camera stream over 5.8ghz ?
Replies: 5
Views: 4257

Re: Pi camera stream over 5.8ghz ?

Ok Thanks Kári, I'm hoping to use it for FPV, first person view, for RC planes, helicopters, quadcopters etc. So I need to a program to capture the video then transmit it over 5.8ghz, I could use Motion or MJPEG ? Is there a reason you want to use a Raspberry Pi rather than something like a Mobius ...
by ant_thomas
Mon Dec 30, 2013 5:47 pm
Forum: Camera board
Topic: Working Fisheye Lens?
Replies: 101
Views: 51462

Re: Working Fisheye Lens?

It looks like this has been gone over already but I bought a very cheap wide angle lens off eBay (http://www.ebay.co.uk/itm/400586870974 - £1.23) that works surprisingly well. Just to test I stuck one of the metal rings to the Pimoroni camera mount then the lens magnetically attaches to the ring. Pi...
by ant_thomas
Thu Oct 31, 2013 3:33 pm
Forum: Camera board
Topic: IR to Visible "filter"/processing - Pi NoIR
Replies: 8
Views: 6407

Re: IR to Visible "filter"/processing - Pi NoIR

That answers that one, thanks for the replies!
by ant_thomas
Thu Oct 31, 2013 12:56 pm
Forum: Camera board
Topic: IR to Visible "filter"/processing - Pi NoIR
Replies: 8
Views: 6407

IR to Visible "filter"/processing - Pi NoIR

This may sound like a silly question, and I realise it might not get many or any answers...but... Does anyone know of any software filters/processing to try and convert an image from the NoIR camera module to look more like a visible light image like the original camera module. If imagemagick can do...
by ant_thomas
Thu Oct 31, 2013 8:53 am
Forum: Troubleshooting
Topic: Dynamode USB Wifi Dongle issues
Replies: 393
Views: 183020

Re: Dynamode USB Wifi Dongle issues

Actually, don't bother.

I'm returning it and have bought a known working adapter.
by ant_thomas
Wed Oct 30, 2013 6:30 pm
Forum: Troubleshooting
Topic: Dynamode USB Wifi Dongle issues
Replies: 393
Views: 183020

Re: Dynamode USB Wifi Dongle issues

Tried but too big to attach in here. If you could put it on dropbox or email it to me I could host it? I have bought this adapter off ebay by accident. I bought one that was advertised as a RealTek RTL8188SU chipset but in fact it has this 148f:7601 Ralink chipset. I bought it specifically for the ...
by ant_thomas
Sun Sep 08, 2013 3:38 pm
Forum: Camera board
Topic: Flashing band across video
Replies: 41
Views: 19350

Re: Flashing band across video

I'd just like to add that after suffering from the same banding issues with videos and not stills I ended up in this thread. I was using a good Asus 5V 2A power supply that required a separate USB cable. This gave the banding issue. I've now moved to a generic 5V 1A charger with an integrated cable ...
by ant_thomas
Sat Jun 15, 2013 8:51 pm
Forum: Automation, sensing and robotics
Topic: PiHAT - Rasberry Pi Home Automation Transmitter
Replies: 194
Views: 82732

Re: PiHAT - Rasberry Pi Home Automation Transmitter

Would it be possible to add LightwaveRF support to PiHAT? It would hopefully mean no requiring the relatively expensive WiFi Link and just needing the switches themselves and being able to control them with PiHAT and the RPi. There seems to be an Arduino library available - https://github.com/robert...
by ant_thomas
Tue Apr 30, 2013 7:39 pm
Forum: Automation, sensing and robotics
Topic: Source code to w1-therm?
Replies: 41
Views: 35802

Re: Source code to w1-therm?

Yes, as long as the w1 stuff is in modules as apposed to built-into the kernel. In that case, you can even unload the old modules and then load the new ones without rebooting. Make the pin a module parameter and you could change it without rebuilding the module. I haven't tried that, yet, but the w...
by ant_thomas
Tue Apr 30, 2013 4:56 pm
Forum: Automation, sensing and robotics
Topic: Source code to w1-therm?
Replies: 41
Views: 35802

Re: Source code to w1-therm?

Is it possible to make this GPIO pin change and rebuild the required modules without recompiling the whole kernel?
by ant_thomas
Wed Apr 03, 2013 3:59 pm
Forum: Automation, sensing and robotics
Topic: PiHAT - Rasberry Pi Home Automation Transmitter
Replies: 194
Views: 82732

Re: PiHAT - Rasberry Pi Home Automation Transmitter

SirAvalon wrote:Yes!
Thanks, I didn't think of using my 433 MHz transmitter with PiHAT. The signal range has increased a lot by doing that!
by ant_thomas
Wed Apr 03, 2013 1:14 pm
Forum: Automation, sensing and robotics
Topic: PiHAT - Rasberry Pi Home Automation Transmitter
Replies: 194
Views: 82732

Re: PiHAT - Rasberry Pi Home Automation Transmitter

Hi Guys, I have just discovered this topic. I have the Conrad plugs and everything works fine (btw, thanks a lot for adding Conrad plugs too!). I was using a python script to control them, along with similar transmitter with the one here (http://www.hoagieshouse.com/RaspberryPi/RCSockets/RCPlug.htm...
by ant_thomas
Mon Apr 01, 2013 11:51 am
Forum: Automation, sensing and robotics
Topic: Pi Light Switch
Replies: 6
Views: 4282

Re: Pi Light Switch

Nice and simple using a cheap Arduino relay board. You can use the Raspberry Pi to switch on/off using the GPIO pins.
by ant_thomas
Fri Mar 29, 2013 1:06 pm
Forum: Automation, sensing and robotics
Topic: DS18B20 Setup Error
Replies: 17
Views: 10369

Re: DS18B20 Setup Error

How is it wired up? I have the premade boards with the resistor already fitted. Mine are wired up .... + to 5V - to GND S to GPIO4 (Pin 7) + to 3.3V - to GND S to GPIO 4 Great, plugged in 5V it works :) Good stuff. Hopefully it doesn't cause issues. I've moved mine over to 3.3V and it's still worki...
by ant_thomas
Thu Mar 28, 2013 8:00 pm
Forum: Automation, sensing and robotics
Topic: Cheap and Simple Home Automation Project
Replies: 4
Views: 3418

Re: Cheap and Simple Home Automation Project

Home automation in what sense?

You can buy a temperature sensors, relays and PIR sensors for less than £2 each.
by ant_thomas
Thu Mar 28, 2013 4:10 pm
Forum: Automation, sensing and robotics
Topic: DS18B20 Setup Error
Replies: 17
Views: 10369

Re: DS18B20 Setup Error

RaTTuS wrote:
ant_thomas wrote:How is it wired up?

I have the premade boards with the resistor already fitted. Mine are wired up ....

+ to 5V
..
to the 3V please ....
Am I risking damaging my RPis by running the sensors off 5V?

I also have relays running on 5Vs. Bad idea? As well as PIR sensors.
by ant_thomas
Thu Mar 28, 2013 4:06 pm
Forum: Automation, sensing and robotics
Topic: DS18B20 Setup Error
Replies: 17
Views: 10369

Re: DS18B20 Setup Error

How is it wired up?

I have the premade boards with the resistor already fitted. Mine are wired up ....

+ to 5V
- to GND
S to GPIO4 (Pin 7)

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