Roll the dice on an ASRockJ4005B-ITX?

As a newbie, I've spent many hours researching the hardware required to CNC my X2. The Beagle Bone Black / Machinekit approach seems to still be too iffy (challenging problems likely). The ASRock J4005B-ITX is actually the cheapest ITX board I can currently find with a printer port. It's a lot like that earlier boards in the series but has DDR4 and a bit faster CPU clock.

I searched these forums and found positive reports on other boards in this ASRock J-series CPU line. This board features a more recent 2-core CPU from the J series SoC family (system on chip) / architecture of Intel-based offerings than the boards others have reportedly used or recommended here.

www.asrock.com/mb/Intel/J4005B-ITX/index.asp#Specification

What do you think?

Thanks!

-Cal

if you can get them use J1900 or J1800 older one
if you relay lucky you may get a D525MW Board this kills your Mind

Yeah i would expect trouble with such a new motherboard and the relatively old RTAI kernels available with LinuxCNC+Wheezy. The J4005 should work with the LinuxCNC Stretch test ISO +Preempt-RT kernel however . This question would be whether the Preempt-RT kernel would have acceptable latency for a parallel port config on that hardware (Preempt-RT tends to do better on faster machines)

pl7i92,, Thanks for the prompt reply!

I can spend a bit more and still get a new 1900. I've not ever seen a D525MW. I'll search a bit more for one.

Thanks for the prompt reply, PCW!

Yeah. I was worried about an increased level of SoC on the newest J CPUs WRT kernel support. There was a big increase from 1900 to the 3455 generation (which features a process shrink). I downloaded the datasheets from Intel but could not find a full datasheet for the J4005 to look for potential older kernel gaps.

I read the stretch test iso is getting close to receiving an official thumbs up. Given the performance level of even these budget chips (compared to a few years ago), it's interesting that performance still becomes a concern with the new PEEMPT-RT kernels. Even though it won't fit in a single case with the drivers, I think maybe I'll dust off an old ATX mobo (with printer port) from my bone yard and run the latency test on it.

I have j4105 and has worse jitter than Q1900M Pro3 but j4105 is faster
Also j4105 gpu needs new kernel to work does not work with old kernel

That's great information, vre. Thanks for your help! I guess I'll look for a 1900.

go for the newer 4105 it is more fast and is supported now

The 4105 has a quad core but all it will be doing is LinuxCNC so is it really that much faster than the dual core 1800? Low latency is the bottom line and what I'm after, right?

I'm still not impressed with the capabilities of most multi-threaded aps! The 1800 actually supports more (but slower) memory too, but I doubt I'll need 16GB of memory.

Can these boards run either RT-PREEMPT or RTAI? I'm planning to use the printer port with RTAI but maybe I'll change my mind. Hard to say at this point.

Both of these boards only have only printer port headers, but a header might be better than a printer connector anyway...except do you happen to know if I'll need to use pull-up resistors too?

I'd sure appreciate a pluses vs. minuses rundown on these two boards!

ASRock D1800M:
www.asrock.com/MB/Intel/D1800M/index.asp#Specification
www.newegg.com/Product/Product.aspx?Item...13157514&ignorebbr=1

ASRock J4105M:
www.asrock.com/MB/Intel/J4105M/index.asp
www.newegg.com/Product/Product.aspx?Item...13157807&ignorebbr=1

Thanks!