L297-8 PCB - who is interested / anyone sells them?

[masaV]

maybe not good but I like thats board better that all pic-mikrocontroller board what I test and better than some exsotic chip boards.thats is simple, good and cheap driver hobbyist project. first criter is i mean simple, not need programmer if you make thats,dont need software in to mikrocontroller,dont need know program and soft,(sorry my english)better driver include hardvare NOT soft.onlu solder all parts in board and use,thats my way and mean thats easy first board all hobbyist what not know more elektronic,but want make cnc,you dont know learn many month elektronik if you want use cnc
all good that world is simple.
what engineering is bad ? engineer who plan wery complixated system(not good engineering)simple is beatyfull and safe method.

[RomanG]

masaV,

are you sure that that url is correct, doesn't work for me
Thanks,

Roman

[RomanG]

found it,

should be www.nc-step.de

Roman

[masaV]

order place here is germany. http://www.nc-step.de/
Im have orden 3 piece board here and all working good.

[RomanG]

Hi masaV

Thank you. I have looked at their products, but 20 euros for blank PCB looks a bit pricey to me. It comes to 96 euros if you buy it with part kit. One can have 4-axis controller from Hobby CNC for less money.
But their "tiny step" board looks interesting. I wonder if he will charge me VAT if I buy from outside (not within Germany)?
Did he charged you VAT on your boards? I assume you ordered them from Finland.

Cheers


Roman

[pminmo]

Added a users comments, and a new verion of the L297-8 board to allow higher Power supply voltages. 5/13/2005

Phil

[zoltan]

Phil,

On L297-8HV I can use instead of Schottky diodes 1N5822 the ultrafast BY288? Could give me your opinion? Comutation time is around 20 microsecs (if I recall correctly) and schottky is around nanosecs; is this a problem?

Thank you.

Zoltan

[Dag-50]

Hello Phil,
on my cards use normally the fast diode valves BYW28(4A) or BY27(2A)

[pminmo]

zoltan, Couldn't find info on the by288? As DAG pointed out there are a number of substitutes. Just don't use a simple rectifier.

Phil

[Dag-50]

Ho cercato anche io il BY288 ma senza risultati, è giusta la sigla ?
in alternativa, ecco i Datashet dei diodi veloci menzionati.
ciao Dario

Have tried also I the BY288 but without he turns out to you, is right the acronym? in alternative, the Datashet of the fast diode valves mentions to you here.
hello Dario

[Manuel Bernal]

I made this board, based on the schematics sugested by de L297 manufacturer, but I redesign de PCB layout. This is smaller and works great. I have not finished the mechanics yet, but I tested several motor ( up to 1.5 amp phase, at 36 v). I used silkscreen process to make the boards, I have printed 10 units (just to be safe ) and finished 4 of them.