I believe the pulsing can be handled by the brain too, so you needn't use an Arduino for that if you didn't want..


I've been considering doing the same for my vacuum cleaner as well actually.. but it's a big load to be switching on and off frequently/quickly and I'm not sure I like the idea of turning on & off a lot during a job.. I guess we wouldn't know until we tried it... I suppose a vacuum cleaner is designed to be able to handle fast switch on/offs.. and if there's any adverse effects to cnc control signals then, it's all fixable.. where there's a will!
Anyone have experience of doing this?