--- crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68
On Sun, May 19, 2019 at 11:42 PM David Niklas <[email protected]> wrote: > > On Sat, 18 May 2019 16:25:13 +0100 > Luke Kenneth Casson Leighton <[email protected]> wrote: > <snip> > > Eagle - even the monetarily-zero-cost version, which I used to create > > a far better 40V 32-bit-capable version of the RAMPS 1.4 (btw, RAMPS > > 1.4 is so dangerous it's actually burned peoples' houses to the > > ground) - is better, by miles. > <snip> > > I didn't know you were an opensource arsonist. :) :) working with eagle a couple years ago i was so shocked by the unprofessional use of 0.5 amp thermals in RAMPS 1.4 i felt compelled to document it: https://reprap.org/wiki/RAMPS_1.4#WARNING_-_THERMAL-isolation-related_DESIGN_FLAW_IN_Power_handling_capacity_of_PRODUCTION_RAMPS_1.4_boards there is not enough space and the 0.5 amp thermals are completely inadequate anyway, leading to in some cases only something like 2.5 A maximum safe current capacity when the total load can be as high as 6.0A. that can result in something like a 25 to 30C temperature rise above ambient for the rest of the PCB. once one of the thermal tracks burns out you get runaway. yes i met someone who had imported RAMPS 1.4 into Canada, and sold them. yes, one burned someone's apartment down. yes the FCC fined the company and prohibited them from selling electronics. > Do you have some KiCAD files of the incendiaries you used? :) very funny :) _______________________________________________ arm-netbook mailing list [email protected] http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook Send large attachments to [email protected]
