Ferris Wheel Electronic Board

Electronic Control Board

I'm having problems comming to grips with the electronics, as I feel some of the hole numbering are conflicting.

16 pin socket - 31:14, 31:7 & 27:7, 27:7 should this read 32:14. 32:7 & 27:14, 27:7?

Resistor 10K - 17:6, 17:10 - 17:10 is also the same as a link at 17:10?

Capacitor 0.01 - 16:6, 16:8 is also the same as a link at 16:8?

To cut track at 8:11 is also the same as link 8:11 does one cut the track at each side of the hole?

I would appreciate if anyone can advise me how I should proceed???

Regards

Martin

Hi Martin,

I'll see if I can find the relevant issue. Be aware that an error was spotted and a correction published in postbag a several issues later. I think the microswitch was wrongly wired in the original.

Neil

Neil, I appreciate any assistance you can offer.

Thanks

Martin

Hi Martin

I had a bit of spare time today so i drew the board up for you i moved a few components to tidy the board up and to avoid the clashes with the hole numbering, if the posted images are not clear enough i can email a pdf of the images which is clearer

Regards

Dazz

images are out of order grrrrr

Bottom one simply shows component placement

Second image is with the connections labled

First image is looking at the bottom of the board where you need to cut tracks

Third image is as if you were looking through the board from the top

This circuit was drawn from the articles doiwnloaded from this site (pdf 12) so may need tweaking if its been updated in a later edition

Regards

Dazz

I can't do better than Dazz's diagrams, but I will still see if I can find the correction.

Neil

Hi Neal,

after downloading the pdf file12

I see the circuit shows the microswitch common terminal connected to +5V

instead of the 4528 input pin 11 (as shown the switch will short circuit the 5V supply)

another correction I'd make would be to connecting pins 8 , 9 12 & 13 of the 4011

to either 0V or +5V as the inputs of the unused Nand gates should not be left "floating" at an undefind logic level

John

Edited By john swift 1 on 14/11/2012 22:49:33

Dazz,

I have sent you a PE with my email address, if you would be so kind as to send me the pdf with the above images?

Thanks and regards

Martin

Hi Martin email on route

added two photos incorporating John Swift's suggestions

For those interested the software i used for the layout can be found here **LINK** its free and constrantly being developed

Regards

Dazz

Hi Dazz

I've made two changes to you diagrams

first change to break the connection to the 4011 pin 10 (the output of a unused nand gate)

the second change is to connect the cathode of the two SBYV 27 -200 diodes to the positive

side of the circuit so they don't short circuit the 5V supply

John

Edited By john swift 1 on 15/11/2012 14:46:59

Cheers John

i was looking at it and missed that one with the diodes many thanks for the correction

Regards

Dazz

Gents,

Thank you so much for your assistance, I will try to get the additions done this next week.

I will keep you all informed of my progress.

Regards

Martin