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by Peakoverload
Wed Oct 09, 2019 3:00 pm
Forum: Troubleshooting
Topic: SD card corruption
Replies: 7
Views: 442

Re: SD card corruption

Ahh now that is interesting as I'll be using this as an Alexa device and so nothing really needs adding to the filesystem, at least not on a permanent basis and when I need to do a system update I can always log on remotely and turn that function off. I have a 4GB Pi so that is definitely something ...
by Peakoverload
Sat Oct 05, 2019 10:49 am
Forum: Graphics, sound and multimedia
Topic: Interference Problems
Replies: 3
Views: 405

Re: Interference Problems

Yep you nailed it. It was a ground loop, all nice and quiet now. Thanks for the advice, much appreciated.
by Peakoverload
Fri Oct 04, 2019 11:02 am
Forum: Graphics, sound and multimedia
Topic: Interference Problems
Replies: 3
Views: 405

Re: Interference Problems

Ahh yes, good point well made. Hmm need to do some reading up on ground loops.
by Peakoverload
Fri Oct 04, 2019 10:18 am
Forum: Graphics, sound and multimedia
Topic: Interference Problems
Replies: 3
Views: 405

Interference Problems

I've been having loads of problems with this project and close to throwing in the towel and admitting defeat. Basically I've got an old 1940's radio which I've removed the components from just leaving the metal chassis which slides into the bakelite main body. Onto the chassis I've mounted the Pi4 s...
by Peakoverload
Tue Oct 01, 2019 8:56 pm
Forum: Troubleshooting
Topic: SD card corruption
Replies: 7
Views: 442

Re: SD card corruption

Thanks for the replies. I definitely am going to look into the SPST switch as I already have my Pi powered via GPIO as it is. I'm confident it's not my PSU as it's happened to me using the official PSU and I seriously hope it's not my SD card as it's happened to two genuine Sandisk Extreme cards (32...
by Peakoverload
Mon Sep 30, 2019 5:43 pm
Forum: Troubleshooting
Topic: SD card corruption
Replies: 7
Views: 442

SD card corruption

Twice I have had an SD card become corrupt on me with the Pi and both times just as I was doing final testing resulting in having to start almost from the beginning each time. I do shutdown the Pi safely 98% of the time but there are times when this is not possible and I've had to just pull the powe...
by Peakoverload
Mon Sep 30, 2019 1:53 pm
Forum: Media centres
Topic: Resister value for summing circuit?
Replies: 1
Views: 860

Resister value for summing circuit?

So I'm taking the headphone mini jack O/P of the RPI and I want to connect that to a Mono amp. In order to sum the stereo output of the Pi to mono I built a simple summing circuit adding a 1K Ohm resistor to the L & R channels. Whilst I hear the output it is incredibly faint even with the gain on th...
by Peakoverload
Fri Sep 27, 2019 9:19 pm
Forum: Troubleshooting
Topic: Underpower warning
Replies: 1
Views: 136

Underpower warning

I'm using a RPi4 and had been using the official USB-C Power supply and connected to the Pi was USB Keyboard & Mouse, a Microphone HAT (Respeaker 4Mic HAT) and a USB SSD hard drive. The official power supply comfortably powered this and I had no warnings or issues. The official PSU is rated at 5.1V ...
by Peakoverload
Tue Sep 24, 2019 12:44 pm
Forum: Beginners
Topic: Powering Pi4 via GPIO
Replies: 4
Views: 173

Re: Powering Pi4 via GPIO

Fixed it! Turned out to be a super tiny bit of plastic inside the hole of the adapter on the expansion board that was preventing a full connection to pin 2. Just noticed that the jumper was a fraction higher than on pin 6 and just poked a wire through from the other side and out it popped. Well that...
by Peakoverload
Mon Sep 23, 2019 9:40 pm
Forum: Beginners
Topic: Powering Pi4 via GPIO
Replies: 4
Views: 173

Re: Powering Pi4 via GPIO

Ahh okay well I've found the problem, I just don't understand the problem. I have this expansion board installed on my Pi4 https://thepihut.com/products/modmypi-triple-gpio-expansion-board If I connect the power to pins 2 & 6 on JP1 (which is the one that actually plugs into the GPIO on the Pi), the...
by Peakoverload
Mon Sep 23, 2019 8:56 pm
Forum: Beginners
Topic: Powering Pi4 via GPIO
Replies: 4
Views: 173

Powering Pi4 via GPIO

I'm obviously doing something wrong here but I can't work out what. I have a 19V 3.5A power supply which I'm connecting to an Amplifier module and also to a voltage regulator, this one specifically https://www.amazon.co.uk/Droking-Regulator-0V-32-00V-Adjustable-Programmable/dp/B07F8XNVHK/ref=sr_1_1?...
by Peakoverload
Tue Sep 03, 2019 9:16 am
Forum: Device Tree
Topic: Using two audio devices in device tree
Replies: 6
Views: 1095

Re: Using two audio devices in device tree

I'm not familiar with either board and am a total newbie so I may be completely wrong but I had the exact problem using different devices and found on here that it is because you can only have one I2C device. If you try to install two, they conflict with each other and only one will work.
by Peakoverload
Mon Sep 02, 2019 1:51 pm
Forum: General discussion
Topic: Power Questions Part 2
Replies: 4
Views: 284

Re: Power Questions Part 2

Thank you for the replies. Yes I am using a Pi4 so good to know the GPIO pins are safe to use.

I've ordered some parts so fingers crossed it will all work this time.
by Peakoverload
Sun Sep 01, 2019 11:48 am
Forum: General discussion
Topic: Power Questions Part 2
Replies: 4
Views: 284

Power Questions Part 2

So having got to almost completion of my project I find that the improvement I wanted/needed to make simply isn't possible due to the Pi only having a single I2S interface. My plan was to use an Amplifier HAT and a Far Field Mic HAT but I now need to think about using a separate Amp altogether and t...
by Peakoverload
Sat Aug 31, 2019 5:07 pm
Forum: HATs and other add-ons
Topic: Multiple HATS not playing ball
Replies: 2
Views: 278

Re: Multiple HATS not playing ball

Ahh, well that would certainly explain that then! Damn that's quite a problem for me as I need to power a 6.5" passive speaker and also need a decent far-field microphone. I really wanted to avoid building a separate amp and using the mini jack output as I only really have space for one power supply.
by Peakoverload
Fri Aug 30, 2019 3:48 pm
Forum: HATs and other add-ons
Topic: Multiple HATS not playing ball
Replies: 2
Views: 278

Multiple HATS not playing ball

I'm really out of my depth here as a total newbie to Pi & Linux in general and as such I don't really know how to phrase the question I need answering. Basically I've been using the HiFiBerry Amp2 HAT which I have connected to a pair of speakers and then I had a USB adapter with a microphone and eve...
by Peakoverload
Fri Aug 23, 2019 5:59 pm
Forum: Off topic discussion
Topic: Solder Question
Replies: 13
Views: 1876

Re: Solder Question

Thanks all for the replies. The mystery continues. I work in a recording studio and when I first saw the reels thought it was left over from when we moved in and all our equipment and patchbays had to be wired up. But when I saw it was 20/80 I thought that couldn't be the case. We have absolutely no...
by Peakoverload
Thu Aug 22, 2019 2:58 pm
Forum: Off topic discussion
Topic: Solder Question
Replies: 13
Views: 1876

Solder Question

A bit of a random question and not directly Pi related but thought someone here might know as I know next to nothing about it. Where I work we have boxes and boxes of solder and nobody knows why, where it came from or how long it's been there. We have absolutely no use for it and we were considering...
by Peakoverload
Thu Aug 22, 2019 9:49 am
Forum: Graphics, sound and multimedia
Topic: Can't get new soundcard to work
Replies: 7
Views: 1207

Re: Can't get new soundcard to work

Well I managed to get it working again by running: sudo apt-get update sudo apt-get upgrade Although I had done this a few weeks ago when I first installed Raspian it did find a new update which looked like it had something to do with sound and, either way, has fixed whatever the problem was. Things...
by Peakoverload
Tue Aug 20, 2019 8:58 pm
Forum: Troubleshooting
Topic: How to fix corruption?
Replies: 1
Views: 205

How to fix corruption?

I'm not entirely sure how best to explain this so if I explain how I got to this stage it will hopefully make it clear what I mean. So I've been building an Alexa device from this github repository https://github.com/alexa/avs-device-sdk I also installed a HiFiBerry Amp2 HAT amplifier along with a U...
by Peakoverload
Sun Aug 18, 2019 8:57 pm
Forum: Graphics, sound and multimedia
Topic: Can't get new soundcard to work
Replies: 7
Views: 1207

Re: Can't get new soundcard to work

Well rather annoyingly I had everything working and only had a simple circuit board to build. I've just finished that and took everything apart to re-install it in it's final home. Wired everything up, turned it on, no mic or sound! Have now got the mic working again but cannot get the speaker to wo...
by Peakoverload
Sat Aug 17, 2019 5:15 pm
Forum: General discussion
Topic: Are Speaker Magnets A Problem For Pi?
Replies: 18
Views: 1801

Re: Are Speaker Magnets A Problem For Pi?

Thanks all for the replies and reassurances. I shall give it a go and hope it all works as planned.
by Peakoverload
Fri Aug 16, 2019 6:03 pm
Forum: General discussion
Topic: Are Speaker Magnets A Problem For Pi?
Replies: 18
Views: 1801

Are Speaker Magnets A Problem For Pi?

I'm going to be putting a Pi into an old radio and it looks like I may have to mount the Pi directly behind the speaker. Is the magnet in the speaker likely to cause damage to the Pi? It's a 6.5" full range driver. If it is likely to do damage, does anyone know roughly how far away it would need to ...
by Peakoverload
Sun Aug 11, 2019 10:17 pm
Forum: Graphics, sound and multimedia
Topic: Can't get new soundcard to work
Replies: 7
Views: 1207

Re: Can't get new soundcard to work

Yes but it was a mixture of things. 1. Creation of a .asoundrc file as indicated with a record and playback device listed. 2. Editing the Boot/Config.txt to remove the driver for onboard sound and adding an dtoverlay for my Amp2 card - This bit was key 3. Running alsamixer and not only setting the m...
by Peakoverload
Sun Aug 11, 2019 6:26 pm
Forum: C/C++
Topic: How Do I Loop This?
Replies: 8
Views: 2872

Re: How Do I Loop This?

Ahh okay, yes that makes more sense. It looks like the 'condition' of THINKING must not be quite correct as now, although the LED's do blink, they don't stop blinking. Also the other set of LED's that come on when LISTENING now don't go off so I guess it's caught in an infinite loop somewhere. It's ...

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