Got it, thank you!No worries. The two wires are just for sending FifoPi information to MonitorPiPro. The other two wires are the Rxd and Vcc, which are not used for this application.
Ian
Hello everyone,
I am currently trying to install the ReceiverPi DDC board.
My configuration should look like this:
1. RaspberryFree
2. Amanero USB Combo384
3. Receiver Pi DDC
4. Station Pi
5. FifoPi Q3
6. MonitorPi
7. TransportPiAES
First I want to connect my streamer with USB.
But I have a problem. I can not switch the ReceiverPi DDC to the USB input.
I have closed the pins 5-6 (J8), but nothing happens. MonitorPi shows "no signal".
Only the D8 LED is lit (Rasperry Pi as source).
Am I doing something wrong? Do I need the MonitorPiPro to switch the input?
I am currently trying to install the ReceiverPi DDC board.
My configuration should look like this:
1. RaspberryFree
2. Amanero USB Combo384
3. Receiver Pi DDC
4. Station Pi
5. FifoPi Q3
6. MonitorPi
7. TransportPiAES
First I want to connect my streamer with USB.
But I have a problem. I can not switch the ReceiverPi DDC to the USB input.
I have closed the pins 5-6 (J8), but nothing happens. MonitorPi shows "no signal".
Only the D8 LED is lit (Rasperry Pi as source).
Am I doing something wrong? Do I need the MonitorPiPro to switch the input?
Here are some tips of building a digital audio system, as well as some troubleshooting cases.
Please have a read before you getting started.
Just hope they help.
https://iancanada.ca/blogs/news
Ian
Please have a read before you getting started.
Just hope they help.
https://iancanada.ca/blogs/news
Ian
@Cerole
You can send pictures to me at iancanada.mail@gmail.com
To see if I can figure it out for you?
Ian
You can send pictures to me at iancanada.mail@gmail.com
To see if I can figure it out for you?
Ian
@iancanada Thanks, yes it is. That one has radiused edges and a window cut in the bottom. It will allow for some sound deadening material to be placed under the caps on the chassis without making contact. The bracket on top has it's own standoffs built in. I have 3 sets just like it plus one I want to test with spraying sound deadening on it. I can send you a set if you want. I have an extra one where the corners don't have a radius and it doesn't have a window in the bottom.
In a couple of weeks I'll have a chassis for up to three of these boxes and the complete Pi-less build. I still have to get some measurements right. I think I'll lay it out on some cardboard
In a couple of weeks I'll have a chassis for up to three of these boxes and the complete Pi-less build. I still have to get some measurements right. I think I'll lay it out on some cardboard
I cannot find any 18650 cells with an internal resistance <6 mohm, most are 7-15 mohm.
As these cells will be used for 3.3 V (on PurePi II) and when adding an UCconditioner with the correct capacitors how much should I really worry about not meeting the recommended specs for the 18650 cells ?
Or does somebody found a suitable supplier that does < 6 mohm and available in Europe ?
I found Sony Murata US18650VTC5A for a good price (7-15 mohm)
Thank you
As these cells will be used for 3.3 V (on PurePi II) and when adding an UCconditioner with the correct capacitors how much should I really worry about not meeting the recommended specs for the 18650 cells ?
Or does somebody found a suitable supplier that does < 6 mohm and available in Europe ?
I found Sony Murata US18650VTC5A for a good price (7-15 mohm)
Thank you
@Oystein
you have these:
https://www.batt-energy-shop.de/Akkus/Lithium-Akkus/lithium-werks-apr18650m1b-power-cells.html
they turned out to be excellent, <15 mOhm, I haven't found anything with less resistance
you have these:
https://www.batt-energy-shop.de/Akkus/Lithium-Akkus/lithium-werks-apr18650m1b-power-cells.html
they turned out to be excellent, <15 mOhm, I haven't found anything with less resistance
Not exactly what you want but I'll use this one.I cannot find any 18650 cells with an internal resistance <6 mohm, most are 7-15 mohm.
As these cells will be used for 3.3 V (on PurePi II) and when adding an UCconditioner with the correct capacitors how much should I really worry about not meeting the recommended specs for the 18650 cells ?
Or does somebody found a suitable supplier that does < 6 mohm and available in Europe ?
I found Sony Murata US18650VTC5A for a good price (7-15 mohm)
Thank you
https://www.123accu.nl/123accu-IFR1...500-mAh-Li-FePO4-123accu-huismerk-i34374.html
Last edited:
Ahh .. I had read this already in this tread but looking for cells myself it is easy to forget to check if it was actually LifePO4.No. ONLY LiFePO4 18650,,,,, read the manual .....
@zabloc
Good to know the Lithium Werks are also available in the EU
The customer review for this battery states that it has very low internal resistance. I don't know if the other specs are suitable for PurePi II thoughI cannot find any 18650 cells with an internal resistance <6 mohm, most are 7-15 mohm.
As these cells will be used for 3.3 V (on PurePi II) and when adding an UCconditioner with the correct capacitors how much should I really worry about not meeting the recommended specs for the 18650 cells ?
Or does somebody found a suitable supplier that does < 6 mohm and available in Europe ?
I found Sony Murata US18650VTC5A for a good price (7-15 mohm)
Thank you
https://www.nkon.nl/jgne-18650-1100mah-33a-lifepo4.html
By the time you add wiring and connections, the resistance is going to higher anyway. Also, the ESR of batteries is IME frequency dependent. They may have very low impedance at DC or low frequencies, but it is probably reasonable to expect ESR to go up with frequency.
The biggest advantage of batteries is that they avoid problems with common mode noise, ground loops in AC power distribution systems, unpleasant regulator dynamics, etc. There can even be unwanted coupling between between secondary windings in power transformers. Once all those things are well controlled, then batteries usually end up sounding worse.
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