The ultimate relay card: Some impressions and engineering ideas.

[mrbigniew]

I think the standard was minimum of 0.200 inch guard band void between hi-voltage AC power and low voltage logic. In case there was a lightning strike or other induced hi-voltage spike. For safety reasons u would not want to have that Arc across to logic side.

[mrbigniew]

Great project. The relays which I presume are switching 120Vac or even 240Vac. I would suggest a better PCB layout where u have Hi-Voltage traces not be anywhere close to Lwów voltage digital li

[tcbetka]

Love the videos Michael! Thanks for taking the time and spending the effort to make them... I'd love to see more about programming the MCUs using Linux and DDD/GDB. Awesome stuff my friend, awesome stuff.

[linuxgeek81]

@tcbetka Thanks ;) There is a lot say about this topic to put it on Youtube. For now I just give an impression here and there. But who knows, maybe I write a "best practises" book about it one day :D I always wanted to write a text book anyways ;)

[linuxxx82]

love this video mate...keep up the good work

[oliverrichard47]

Hi, I'm a first year electronics student. Your videos are a real inspiration for me to actually start making some electronics for myself rather than just studying the theory all the time, keep up the good work!

[linuxgeek81]

@oliverrichard47 I didn't study it, I always thought electronics would be to hard for me. If I would do it as a second degree I could probably swing it, but we don't have all this time I guess ;) Takes a lot of effort to get good in any field of engineering I guess ;)

[mikemcdonald113]

Have you considered using embedded Linux boards e.g. Ts7260 from technologic systems for these projects? No need to re-invent the wheel when writing software. E.g. use crond to schedule events rather then a dedicated chip. Board looks very nice.

[linuxgeek81]

@mikemcdonald113 No, this would be overkill.

[Sammyjeans1]

hey buddy, love your videos. I'm building an H-bridge motor controller using standard automotive relays which go through a large PWM to power car window motors. Its all going to power a veneer gluing machine I'm designing. I'm just learning Eagle now and the learning curve is steep at the moment but I'm trying hard. Just writing you this to say keep up the good work, you have mucho talent. Later.

[linuxgeek81]

@Sammyjeans1 Thanks, that's quite sweet ;)

[djodin]

Michael IS the auto router. Also, I love symmetrical traces.

[linuxgeek81]

@djodin Uh oh, Odin is flattering me oO *turns red

[modheadify]

another superb video. have you considered selling this project. i have tried to buy your 6 relay card. but no luck. do you sell on ebay. hope so. i have not uploaded any videos yet as i am still a beginner. but i have just made a two relay timer for my agitator. and i am in the middle of making a 4 tube uv box with timer.

thanks again for all your great vids.

ps. anybody involved in electronics should love relay cards. my favorite projects include relays.

[linuxgeek81]

@modheadify Selling Kits you mean? Doesn't pay, it's a lot of work and people will not give you any extras for the trouble. Also, I don't depend on it.

[myozone]

Looks very good and useful !

[mightsnipe]

If i could request a video, it would be talking about the complete basics of what you do. The tasks these cards are used for, how they work, stuff like that. I'm sure I cant be the only person that watches your videos and gets lost halfway through. If doing that type of video doesn't interest you, I understand. Thanks either way.

[lartti83]

really nice project!

[orangedac]

Dr. Strangelove :-)

nice card.

[linuxgeek81]

@orangedac I wasn't exactly plotting a plan to preserve the species with only a few specimen.

[apaljapaz]

this is awesome! i like it you "returned" to youtube. i think this project is amazing. i love the features you decided to use. your knowledge exceeds my by far. i am using cadsoft eagle 5.11. but only for school and little home projects. hopeful someday i will be able to make something off this extension! i would love it if you could check out my project on my channel and tell me what you think. of course its way simpler. more for fun;) keep on the good work looking forward to new videos.. :)

[ntjbjhq]

Very nice card! I'd definitely finish that up and write a detailed article about it, and submit to some magazines to get it published. They are always looking for good content, so I'd think you could get in Elektor or Silicon Chip etc, with this project and get something published world wide!

[mirabilis]

no caps on the 32khz xtal?

[Orthosonic]

Very beautiful!

What kind of software was that?

It does not look like gEda...

[linuxgeek81]

@Orthosonic Thanks ;) I was using Cadsoft Eagle 5.11.

[linuxgeek81]

I was wrong about the "lithium battery", actually it's a 0.1F super capacitor ;)

[eddy66t6]

@linuxgeek81 haha, we'll say nothing... :P

good project!

[rainbowsalads]

looking good :) did you auto route much of this? looks very tidy.

[linuxgeek81]

@rainbowsalads Hei, no of course not, it's "hand made". An auto router will not get you anywhere near this. It took me a lot of time, though, I guess around 20 hours all in all.