Raspberry Pi Forums

cancunia

Thanks Gordon, I will set it as you've suggested.

cancunia

Sorry, I'm sure this has been covered but there are so many threads on GPIO that seem to contradict that I'm struggling to know which to believe. The background is that I want to control my Sainsmart 2 channel relay borad via the Pi GPIO. This board has jumpers which allow you to separate the trigge...

cancunia

OK, the only thing that I couldn't swap was the audio out cable and that turned out to be the problem. It seems that I had an odd pinout on the cable which was close but not quite the same as the MP3 player pinouts in the blog pasted below. Anyway, after half an hour of soldering all is now well! ht...

cancunia

I seem to be getting what sounds like mains AC buzz on the audio out jack of my B+ and wondered if there's anything that I can / should set to make this go away? I also have a model B which works just fine with my simple setup as outlined below. MPD Cantata / Alsa Audio Out Jack 2 Channel Amp When I...

cancunia

A quick update from my non-expert testing this morning. 3v on VCC - IN1 or IN2 used 0.4 mA to activate the opto isolator. On the micro Amp scale it showed 380, so fairly consistent. I tried this with 2 meters to be sure. I did not measure current on 5v for the relays, but a couple of sources online ...

cancunia

Spurred on by the possibility of this working properly, I've come across some more info. There are also some references to this topic in other posts on the form, but I'd like to try and untangle this in my layman's terms too. I'll do some tinkering tomorrow and see what gives. Here's a diagram from ...

cancunia

Thanks Gordon, I did wonder about the 5v and only connected mine up for a few minutes. It does seem that others have got away with the 5v setup but maybe not in the longer term. I came across this post which suggests it will work on 3.3v & 5v by powering the different parts of the board separate...

cancunia

I did a search on Sainsmart and there were posts into the hundreds, so apologies for not looking through them all before starting another! The words below, really boil down to a simple question - what voltage can you safely sink via a GPIO pin, 5 or 3.3? I bought a 2 channel Sainsmart relay relay bo...

cancunia

I've read so many posts on this subject, I cannot remember exactly how I came across this one, it's in German, but the code is very easy to copy & paste.

It worked a treat on my Rpi B+. Many thanks to Thomas Wenzlaff for documenting it!

http://blog.wenzlaff.de/?p=4805

cancunia

Interesting, that looks to be the exact same thing that I did, but I'm certain that all of my USB ports went off (or at least 2 of them), plus the Ethernet would no longer work. I had to power cycle to get back in again.

cancunia

I came across this thread yesterday and can confirm that hub-ctrl with '-h 0 -P 2 -p 0' will turn off ALL of the USB ports and by the looks of things the Ethernet port off too. If there's any finer granularity than all or nothing possible, please let me know. Thx

cancunia

Thanks for the quick reply, but the problem is that I cannot get it to work on the B+ with any semblance of working properly, never mind the occasional wake-up. When I get a bit of time I'll try the commands in your script to see if it improves things, but whatever happens, this is a workaround. I s...

cancunia

Hi All, I've just been setting up my new B+ and have come up against what seems to be a compatibility issue between B & B+. The Mod B runs my RT5370 with no issues, yet the B+ will either not start working with the RT5370 or will drop out soon after. Mostly it just will not work. Syslog shows ei...

cancunia

OK, after a couple of days of messing around, I think that I have what I need. In case anyone else is interested: MPD running on the Pi - excellent! Auremo client running on Windows SPD2 Shoutcast playlist downloader I expect there are other clients out there too, Auremo was mentioned on a MPD Wiki ...

cancunia

Many thanks for the quick replies, I should have mentioned that I have a copy of Raspbian with my weather station software running so I want to add something very light to that. Unfortunately that excludes any dedicated images. MPD is very light and probably the best base for any implementattion for...

cancunia

Help! I was using XBMC but only ever used the Shoutcast addon and am looking for an Internet streaming only application. I downloaded and have running MPD / MPC using ympd a a web interface. MPD runs fine, but how do I add a database of stations to browse? In short, what I think I'm looking for is a...

cancunia

Maybe a daft question, if so apologies.

Is it possible to work at 868Mhz too?

cancunia

This is interesting. Do you think it could be used for sniffing 868Mhz (domestic heating etc) devices?

cancunia

Hi,

I'm just starting out on this so please excuse my total ignorance!
Are these the GPIO pins that the NRF905 pins should be connected to?

RF905_Py default setting:

CSN = 24
DR = 7
AM = 15
CD = 13
PWR = 11
TRX_CE = 12
TXEN = 8

Thanks

cancunia

Did your Pi by any chance come from RS?

Edit - sorry just noticed the link to the returns form you put in the first post. My Pi has almost exactly the same issue, but now won't boot at all, it just shows the single red light.

cancunia

Hi everyone, Just wondered if anyone else has had a faulty Pi delivered in December? Mine came mid December but I only had the chance to first use it on Sunday 23rd. On the first day it would only show the red light when powered up , then the next day it suddenly started to boot up but would crash a...

Search found 21 matches

Re: Sainsmart & GPIO - Source / Sink - In / Out

Sainsmart & GPIO - Source / Sink - In / Out

Re: B+ Audio Problem - Buzz

B+ Audio Problem - Buzz

Re: Voltages, Pi GPIO & Sainsmart Relays

Re: Voltages, Pi GPIO & Sainsmart Relays

Re: Voltages, Pi GPIO & Sainsmart Relays

Voltages, Pi GPIO & Sainsmart Relays

Re: Dynamode USB Wifi Dongle issues

Re: Raspberry Pi B+ turn usb power off

Re: Raspberry Pi B+ turn usb power off

Re: B+ & RT5370 Problems - Caused by USB?

B+ & RT5370 Problems - Caused by USB?

Re: Lightweight way to stream Internet Radio ??

Re: Lightweight way to stream Internet Radio ??

Lightweight way to stream Internet Radio ??

Re: PiHAT - Rasberry Pi Home Automation Transmitter

Re: rfm12b - acknowledged communication with two RPi's

Re: Connecting Nrf905 radio module, SPI

Re: Questions about customer returns

Quality Issues with RS Shipments?