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[bigtalltim]

Hiya all, I've been following Tim's relay set-up have & got the relay board built & K8055 connected, but when I test it in X-sim (as u can see in video) the motor only works towards the bottom of test slider, but relay only switches at the top of slider. As far as I can see the circuit is wired correctly. Incase this is a x-sim setup issue my current profile is attached...

Hi - first thing is to apologise it has taken so long to get back to you... I've been working away again, and was unable to get hold of a K8055 to test this... I cant open your profile without one!

The relay should switch at the middle point - it sounds like you dont have the "split negative and positive" check box selected. Double click on the effect in the maths section - the check box is about half way down on the left hand side of the resulting dialogue box.

Regards

Tim

[poteroa]

Hi everyone.

A very interesting topic, been reading for few days, and definately want to try this at home. =) (sorry my english, just use it like twice a month).
I tried to find the K8055-board as cheap as possible, and stumbled to vellemann´s home page...
They have released a new version of the K8055 called K8055N. One exciting thing about the new version is that the command execution
time is MUCH faster, only 2ms (K8055 has 20ms) so I think much more information could be passed in same time if got enough processing power.

I think I got lost with the component list for the relay board, so help me out..

Are the the right ones: (for two wiper motors)

2 x 1k ohm resistors, (wattage?? 1/4 - ½ - 1W)
2 x transistors, 2N6284 or MJ11016
4 x diodes, 1N4001
2 x relays, 12 volt 10A dpdt (is there a "solid State" version with same pinout and raster with less than 100mA consumption?) (Much faster I think)
2 x dpdt sockets

I am thinking of using VW Golf/eurovan wipermotors (not original ones) cause they are quite cheap, only 29.90,- euros/piece.

Powersupply would be 2 x 100Ah 12 batterys + 18A Charger

I think I don´t need that H-brigde, do I ?? If I use only the relay thingy..
How about the x-sim profile for the simulator, is it hard to do configure on my own?

[Rebo]

I would like to take advantage of the bank holiday weekend with a trip into town abit later today and swing by Maplin with a shopping list.
I have the 20mm box section for the frame and the matching pair of wiper motors ready, Now I just need to get the electronic components together.


Is there a set list to use for the K8055+Relay setup yet?.
Can the relays be built up on bread board. I do have a cnc that I can use for the pcb but I would need a mach file.

I know diddly squat about electronics so I can't just guess at component type, values but can follow build instructions well enough.
Could someone post a 'complete' list for me.

[bigtalltim]

Is there a set list to use for the K8055+Relay setup yet?

Absolutely - read the thread ... there are several!

see the very first post for an index, and the second post for a list of components
(... and my comments below for the components I first used - and still use! )

Can the relays be built up on bread board? I do have a cnc that I can use for the pcb but I would need a mach file.

yes indeed - read the thread This was first suggested by Frakk on page 2...
have done it myself since to test other components. it's very easy

there are a number of well documented examples contributed by other people that have tried breadboarding this circuit in this thread - I recommend you search them out, as you may be able to avoid any problems that have been worked through before

I know diddly squat about electronics so I can't just guess at component type, values but can follow build instructions well enough.
Could someone post a 'complete' list for me.

you dont need to know much about electronics - just read the thread dude! -
That's why I wrote it - it's instructions from start to finish...

Effectively, the list you asked for is on the first page in the second post - the circuit is so simple that I deliberately didn't force components on anyone in case they couldnt find them and might think it wouldnt work with any other type from those listed... the components are so unbelievably simple, that you can pretty much make it up as you go along - other than the relays, all my bits came from maplins "lucky bags!" - this has to be the simplest DIY electronic solution by a mile... and the cheapest! I can't find an easier way of achieving variable speed multi directional motor control (and believe me... I have tried!!)

Here, just for you is the list of bits (with Maplin codes) that I used - the original circuits STILL WORK despite many hours of testing under load
Apologies to anyone in a country that does not have Maplin

each wiper needs:
DPDT relay £4.99 each - N08AW
Relay Socket £1.69 each - N32AW
1K resistors £0.14 each - Dude - a 1K resistor is a 1K resistor
2 diodes (from a lucky bag... about £0.10 each) - ANY that can take at least 12v and 15A - never had a code.
1 NPN Transistors (from a lucky bag... about £0.15 each) - I used BUX127, but have 6 different types now, all of which work well

thats it! - the component specifics just dont matter. As long as minimum voltage and current requirements are met and/or exceeded, it will work fine. If in doubt, just ask an assistant to help you choose a diode and/or transistor - they are usually pretty clued in

page 14 post 9 (how it works) will help to understand what each of the bits does and how it all hangs together...

should definitely help with understanding where each component goes in the circuit, and make troubleshooting easier

Regards

Tim