Re: [Arm-netbook] riki200 v3 first print: success
On Mon, Sep 18, 2017 at 6:22 AM, Christopher Havel wrote: > Hey, Luke, this might be useful to you... (I *think* I have the right > thread here... lol...) > > https://hackaday.com/2017/09/17/better-stepping-with-8-bit-micros/ they're using DMA - which is really what you're supposed to be doing anyway. the entire arduino software ecosystem was never designed to actually give people proper access to the hardware. anything that's a 180mb download and requires a 200mb runtime environment to compile and upload an executable that's only 16k in size *really* isn't going to end well. so they're stepping well outside of the "normal" boundaries - good luck to them. personally i feel it's much better to use a faster 32-bit processor, and to stick reaaasonably within an eco-system. however RepRapFirmware is just... genuinely much better-designed than Marlin. it's written in c++, it takes full advantage of OO techniques (Marlin does not. at all). it's also event-driven which means that the highest priority - based on a timer - is the actual stepper moving, with other "tasks" running to handle keeping the queue full... lots more as well. also as it's timer-based and event-driven it's *automatically* far superior to what Marlin does. if you wanted to use DMA (if it isn't already) it would be far easier to use that in RepRapFirmware than Marlin. Marlin is a hard-coded for-loop with an interrupt for handling moves, but it's bit-banged (!) and... yeah. anyway. back to PCB work... l. ___ arm-netbook mailing list arm-netbook@lists.phcomp.co.uk http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook Send large attachments to arm-netb...@files.phcomp.co.uk
Re: [Arm-netbook] riki200 v3 first print: success
Hey, Luke, this might be useful to you... (I *think* I have the right thread here... lol...) https://hackaday.com/2017/09/17/better-stepping-with-8-bit-micros/ ___ arm-netbook mailing list arm-netbook@lists.phcomp.co.uk http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook Send large attachments to arm-netb...@files.phcomp.co.uk
Re: [Arm-netbook] Conflict-free minerals
On Sun, Sep 10, 2017 at 01:15:06AM +0100, Luke Kenneth Casson Leighton wrote: > many people have pointed > out however a flaw in this logic, that copyright is a civil offense > not a criminal offense. > Actually I’m not so sure depending on the jurisdiction: https://en.wikipedia.org/wiki/Criminal_Copyright_Law_in_the_United_States ___ arm-netbook mailing list arm-netbook@lists.phcomp.co.uk http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook Send large attachments to arm-netb...@files.phcomp.co.uk
Re: [Arm-netbook] Feedback?
hiya richard, ok yes, took a look at what you wrote, http://lists.phcomp.co.uk/pipermail/arm-netbook/2017-September/014681.html and yes, really, a cutout and markup of the bits of the image you're re referring to would really do it. i've removed the 15mil clearance design rule, reverted back to the *standard* 6mil clearance that was is in place everywhere (and is now back in place as the standard blanket rule, no exceptions, i.e. it's all 6mil clearance from everything-to-everything.. oh... except the board edge of course, which is and always was 12mil) so *part* of what you wrote is slightly out-of-date having done the flood-fill and also removed the GND spacing tracks... also suggest in future we refer to the online image names in full e.g. http://rhombus-tech.net/allwinner_a10/news/eoma68-a20-275-layer1-hdmi.jpg as that is unambiguous. so i'll stop sending images to the list and will use the URLs instead. l. ___ arm-netbook mailing list arm-netbook@lists.phcomp.co.uk http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook Send large attachments to arm-netb...@files.phcomp.co.uk
