Any Suitable alternative to the Raspberry Pi?

dc42

@CaLviNx said in Any Suitable alternative to the Raspberry Pi?:

So I went for a look at the rest of the printers with Duet-3’s now I don’t know if it makes any difference but both printers that the Rpi’s died in both have the longer ribbon cables and the others that have been running with no issues all have shorter ribbon cables. All the Ribbon cables were supplied to me with the Duet-3's
The shorter cables are all about 50mm shorter
@DC42 would there be any reason for this to be a factor?

We were originally using off-the-shelf ribbon cables so we accepted the length that that came in. When they went out of production, we switched to custom made cables, so we have them made to the length that we consider optimum. I can't think why ribbon cable length would be a factor. It's possible that the shorter ones might support a slightly higher SPI frequency.

How many Duet 3 boards do you have? Are they all the same board version?

A Former User

@dc42 said in Any Suitable alternative to the Raspberry Pi?:

@CaLviNx said in Any Suitable alternative to the Raspberry Pi?:

So I went for a look at the rest of the printers with Duet-3’s now I don’t know if it makes any difference but both printers that the Rpi’s died in both have the longer ribbon cables and the others that have been running with no issues all have shorter ribbon cables. All the Ribbon cables were supplied to me with the Duet-3's
The shorter cables are all about 50mm shorter
@DC42 would there be any reason for this to be a factor?

We were originally using off-the-shelf ribbon cables so we accepted the length that that came in. When they went out of production, we switched to custom made cables, so we have them made to the length that we consider optimum. I can't think why ribbon cable length would be a factor. It's possible that the shorter ones might support a slightly higher SPI frequency.

How many Duet 3 boards do you have? Are they all the same board version?

I have 6 Duet 3's , 1 is a 0.6 pre-production board and the other 5 are 1.0.1 revisions, it was 1.0.1 boards that had the Rpi's that died in them.

I have shortened all (long) my ribbon cables of any unnecessary material.

I just purchased a banana pi bpi-m3 as allegedly it has the same pin-out as the Rpi and again will allegedly run Raspbian OS out of the box, so we will see what it does when it arrives.

oliof

Raise, topic!

Following an idea by @Dougal1957 I will test a RaspberryPi Compute Module with eMMC and the RPiCM IO board. The latter means I can run the whole setup from my 24V PSU (as long as I don't intend to fry the PCIe port, and maybe not use the fan port except with a 24V fan). I will report how that fares.

My Raspberry Pi4 is rock solid since I run it off the RPi Power Supply, but I want to get rid of that.

o_lampe

I was looking for alternatives to Raspi too and just want to ask if anyone has tried the Odroid N2?
I'm not sure if it has a 100% compatible GPIO connector, but I have one laying around and only serve as host for my MCU-node experiments.
I also used it to make my TV smart and it served me well with it's noiseless huge heatsink.
It runs from 12V and can use eMMC modules, which I highly recommend.
(don't ask me,how many genuine Sandisk SD-cards for my MCU node I had to replace)
It runs on Linux and Android, which might be an alternative?

jay_s_uk

have a look at this https://teamgloomy.github.io/dsf_on_armbian.html

oliof

I have an RPi Compute Module and the IO Board ready to replace the RPi4.

Advantages: eMMC memory instead of SD card should be more resilient; you can use the PSU to power the board without a buck converter.

Disadvantages: Higher price, larger footprint, requires the smaller thin film connectors for camera/screen.

o_lampe

@jay_s_uk
If it's listed on the armbian page, does it mean,the GPIO-connector is compatible, too?

The AMlogic S902 is listed, but the N2 has S922X.

cad405

My 5 cents: 6 months now with a Duet3 & RPi3. It is powered by a Meanwell 5V 2.5A with a good cable (3A capable). Have good SD card and proper cooling - no worries whatsoever. Oh, it is a Debian box (minimal) only with duet packages. It takes 30sec to boot. Do not even bother to clean shutdown.

jay_s_uk

@o_lampe you may need work out the correct pinout for the board but give it a whirl and see what happens