Ford Prefect

Because there is no HDMI connector.

Hi For hard ware reasons I'm not sure at all that this is possible. On the other hand ,TTY being an asynchronous, mode 115200 should work. What is that device who needs 125000 ?

There is a lot of choice in the Orange family. Why don't you choose a board without WIFI ? My opinion is that WIFI on a SBC is a bad idea except ,of course,in the tablet case. USB dongles are much easier to install in a good signal / little interference place. Easy to disable too

+1 Refresh rate may be of importance too 640x480 60Hz for NTSC 720x576 50Hz for PAL

Hi In the set up of your TV isn't it possible to disable cec function ?

Hi It doesn't answer the question but I just bought that: https://www.amazon.fr/dp/B01GJF2VSI/ref=pe_386181_51767671_TE_dp_3 I should have done it much earlier it is very convenient : cheap no drivers, no batteries works with any application, any OS, even to enter BIOS

I agree. It is a rather big package. But thanks to mariuszb for his message I followed his method from an SSH console it works very well. Update to version 1.831 from the webmin interface worked too.

Hi Looking at the orange PI PC schematic Analogue audio output is made with a 4.7µF capacitor in serial with a 30K resistor This seems odd Either capacitor or resistor is too big . In all cases it need a high input impedance load and should not work with any kind of earphone. On the orange PI plus an amplifier is added and an earphone should work. HTH

I can only approve this statement. In fact I have been using raid 0 on my main PC for about 10 years. It does improve performance. It doesn't seem to double the failure rate because each drive only read and write half of the data. The only failure I had was from an add on sata controller card . Luckily I was able to find the same one but that important point is totally ignored in the raid reliability discussions. Another important point is that the raid should be recognised by the various operating systems you plan to use. 10 years ago Mandriva was the only one

Hi I think the main problem will be the power supply .

Hi What kind of hardware are you using to input 192Ksampled audio ? I found some for output but for various SDR uses input is what I'm looking for.

If you want the fan to stop the simplest way seems to supply it from an USB port. But I think passive cooling is much more suited to that kind of device. I agree with tkaiser on the fact that H3 is not well suited to number crunching. Being interested in SDR I had a chance to compare it with a miniPC based on Intel Z8300 On the other hand it is better in UHD video decoding but my best results were with Android For cooling those chips using thermal pads between the board and a metal plate is a good idea too. It seems they were not designed to facilitate the use of any kind of radiator .

Hi Adding a radiator to any thing electronic is never a bad idea. 50°C is not hot and as far as H3 is concerned I noticed that the internal temperature sensors are often 10 degrees above the temperature of a (too) big external radiator. They also react very quickly but the radiator has much more inertia.

Hi On another forum I learned that using the noatime option in /etc/fstab for ext4 SD cards was a good idea. Any thoughts on that ? Basically it avoids writing access time each time something is read from the card.

Hi I don't know the details of the NanoPI but I doubt it is safe to drive a speaker from it. You have to use an amplifier like those powered by USB that are used with PC sound cards. Even driving long wires with ports not specially designed for that, like Ethernet or USB, is a mistake so for best results the amplifier must be close to the CPU.

I think it is because to move data you first write it in RAM and Linux uses all the available RAM for it. In that case at the beginning the writing speed is lying in fact it is reading speed. That behavior was quite surprising when writing on floppy disks.

There are no coils involved in these schematics. Only capacitors and resistors. For audio out you need an amplifier there is not enough level to drive speakers or headphones directly

I think that by default VLC uses the HDMI sound output. You must select audio codec in "preferences" and save it IIRC. Some choices are only effective if you restart VLC. I had no problems selecting various USB audio out devices with VLC. I use an audio/video cable that was tested with an android distribution. aplay -l is useful to list the various audio out devices available.

When nothing works a TTY connection is of great help. I have not tried it yet with Armbian on my orangePI PC as almost everything work :-) I'm using a prebuild image BTW

Thanks for this nice work. It's a shame that most boards don't allow to make the best use of it with a battery connection.

Hi Totally disabling the use of the serial port during boot don't seems to be a good idea. A command to free the port manually later is what I'm looking for. This will allow to use it with minicom or putty to debug/drive an other device

Thanks for your feedback. Your use of the PI and this card as a synthesiser is very clever. I'm not a musician but it opens the possibility to generate low cost/high quality test signals for various electronic devices.

Cooling seems easier than with the CPU on component side. Someone has an idea of the power saved by not using HDMI at all ?

Nice work. Although I wonder if having all the PI's in the same box is really advantageous.

I totally agree. A nice thing on a good power supply is an on/off switch. Low cost connectors are not designed to be used as switches to reboot for example. Replacing them can be very hard and time consuming even for skilled people. Using flying leads to remove the stress from fragile or costly devices is a good idea too.