You guys are awesome... Just waiting to hear back from support at CPC and then can purchase the parts

Tried bending the copper pipe that I'm using for the game the other day and as I was using an internal 15mm spring it was difficult got 3 bends in and on the 4th misjudged where the spring was and creased the pipe.... Have now borrowed a proper pipe bender and hope to have a finished bent copper pipe sometime this week

Will all that circuitry fit on a bread board then?

Eetech00... What do you mean when you say 'did sim' have you a software package that you use to make sure it works?? Is it something anyone can use or is it expensive?

Being cheeky now but are either of you able to do a sketch that shows that it might look like when completed?

My kids school and scouts group are going to love this so much when it's finished

 

Eetech00... What do you mean when you say 'did sim' have you a software package that you use to make sure it works?? Is it something anyone can use or is it expensive?

Yes...I have a free circuit simulator called LTspice. You can download it at analog.com. I used it to create the schematic. I only simulated steady hand 4 and it worked as intended. It has a steep learning curve though. I’ll post the sim later..

Being cheeky now but are either of you able to do a sketch that shows that it might look like when completed?

Might be able to come close. Let’s wait for Bernard to respond...

eT

 

How it will look ? Depends on how the LEDs are mounted, my latest thought is to mount the LEDs, & Rs on the base in two lines, clock, spaced over length of base , switch, 3 LEDs,& flasher in front row.
Will it fit? There are 60 spaces & a few short lines on either end. I counted out spaces for componets & IC's,3,7,3,7,1,7,1,4,1,3,4,1,7,7. = 60 =
pure luck.
Time to start packing, be back Monday ??
PS: My wire will be # 6 solid Cu as it is already in my shed..
Base will be shallow box to hold ckt. board

 

Drawing updated per comments post #35 thu #40.

eT

 

Thanks guys.... Going to have a look at LTSpice today.... Purely curious at this stage but I pick up programs quickly so you never know

Bernard... Are you making a working version as well? Nice think there should be one of these at everyone summer fair and event

 

OK so have now had an answer from CPC... This is the parts list that they think is needed from the information I gave them .. Have I missed anything?

 

Missing from list is: D22, D24, 1N4148; U 2,5,7, NE555P, order code SC08618, & 5 each 0.1 caps.
To limit the number of different R values, 240, 680, 750, & 1k, all have been replaced with 390.
Has the minimum order number of 50 or 100 resistors been resolved?

 

Sorry Bernard, I don't understand the parts you are asking me to order.. I asked CPC and they just said...

"
Hello Ross,
If you could provide a list of components and specifications that you require, we could source the correct items from our stock to meet your specifications as we have attempted to do previously.

I can confirm that some of our resistors do some in packs of 50 or 100 but this is stated on our website.

If you could comprise a list of the components that you require, we can provide our Order Code Numbers for suitable items.

Regards
CPC Technical"

I have already explained to them that I'm a complete novice... Their first email was great but this second is like being properly winded... Completely unexpected

On a brighter note I've managed to bend my copper pipe into something I'm happy with... Its not brilliant but it will do.. Wanted it in one line but getting it to do that was hard and now I have areas where it I try and bend it again the pipe is going to snap... Let me know what you think

 

Post # 46, part list: U2- is a 555, order code SC12767 is for SN74HC14N, U3 on schematic.
U 2-5-7, NE555P, SC08618.
You could start ordering process by making a list of all parts, ICs. Rs, Cs,Ds, & miscellaneous. Rs go from 1 to 42?
note- there is no U4, D24 is no longer needed, & there are some parts added by @eetech00 as " good practice" but some I would skip, your choice. R 40- 34-, C 14-15-21.
Add up common values in each list & maybe add a spare on two for order quantity.
As I said before, Mouser will sell Rs with minimum of 1, CPC will not.
I breadboarded U1 to U2 successfully but had to use the spare U3's to condition the input to my 74LS 164's.

 

Hello,

When you fix the curly pipe at one side (that is connected to the electronics) and a liftable end at the other side, you can make different difficulty levels by using differend size slide rings.
A large ring will be much easier than a small one.
You can slide the ring on the game using the loose end.
The rings can be connected using a bus and plug system.
The bus can be hidden in the handle and the plug mounted on the ring.

Bertus

 

OK so have gone on the CPC site and placed the items I can figure out into the basket.

From looking at the drawings I can see lots of D parts not just D22 and D24... Do I need to order more of 1N4148

Not sure what you mean regards "5each 0.1 caps." and when I've looked at the resistors I've gone for 26x390 and the 5x10k, 2x560k, 3x1m...they are all in packs of 100 but aren't too bad price wise.

I'm going to upload a PDF of the shopping basket.

Would be good to see an updated drawing based on the new resistors and removing any unneeded parts, just trying to keep it as cheap as I can

 

Shopping List

 

Hi Bernard.

note- there is no U4, D24 is no longer needed, & there are some parts added by @eetech00 as " good practice" but some I would skip, your choice. R 40- 34-, C 14-15-21.

I will remove D24.
R40 and 34 were meant to be for sim only and should have been removed. However, I put those in because of erratic circuit behavior during simulation and the resistors normalized the behavior. Could this be partly due to no de-bouncing of switch SW1 to CLR and RST?
I recommend leaving the C14-15-21 since it unknown how "stiff" the power supply will be.

I'll await your reply before posting a drawing update.

eT

 

One SR on order, but 3 are required.
LED's & 1N4148 are all listed as diodes,D's.
Skip the 390k, parallel a 1M & 560k to give 359k for R15.
Just follow @ eetech00 parts including .01 uF, C1-13-19.
Do you really need D, LED, 20-21?, or maybe something else for part of the " Reward".

 

Schematic Update 06/15/2018:

1. Changed all LED reference designators From Dn to LEDn.
2. Changed R15 to two parallel resistors, R15,R2
3. Changed Buzzer "BZ" symbol
4. Changed diode reference designator from D24 to D1
5. Added notes 5, 6
6. Removed D24.

eT

 

One SR on order, but 3 are required.
LED's & 1N4148 are all listed as diodes,D's.
Skip the 390k, parallel a 1M & 560k to give 359k for R15.
Just follow @ eetech00 parts including .01 uF, C1-13-19.
Do you really need D, LED, 20-21?, or maybe something else for part of the " Reward".

Hi Bernard

Can you confirm the Buzzer (BZ) connections?

eT

 

BZ looks good, as does rest of schematic, nice job.

 

Thanks guys.... I've been camping all weekend with my scout group... Not long home and very tired so will look at all this tomorrow and get back to you but a quick read and I'm hopeful it will mean that I'll be placing an order

 

Only problem I see right now is the dirty contact between W & Loupe, may have insufficient bounce
protection. @eetech00 may have some suggestions here by using spare U3's ??

 

Only problem I see right now is the dirty contact between W & Loupe, may have insufficient bounce
protection. @eetech00 may have some suggestions here by using spare U3's ??

Hi

I'm assuming your referring to the clk input to U1 and also the Reset input to U5(?)
If I understand the game, a human would be touching the W wire to the loop. How sensitive should the inputs be? a few 100mS?

I'm thinking we could add a cap with R3 at the input of U3B and use a similar configuration (adding the spare U3(s) to double invert) at the input of U5 to replace C16 and R36.

However...this makes me wonder about a POR circuit(?)

eT