masking unit tester

[8270_Wang]

Hey guys

I got this idea from Gman. Its a mini version of a masking unit with LEDs layed out like the 10 pins and 3 more LEDs for 1st ball, 2nd ball, and X light. Bought the box and LEDs from radio shack. Used an old C23 plug from our old masking units and ran new wires to the proper pins.


Just finished building it tonight. I'll take it to work to test it tomorrow for all proper function. Hope all goes well.

Wang

[masternut]

Re: masking unit tester

Looks great!


By the way GMan, you have helped alot of mechanics here with you info, thanks

[8270king]

Re: masking unit tester

Good job Chris.

[the_blue_dragon]

Re: masking unit tester

an idea add a foul light (we have the same thing on our cell protection unit)


10 leds for the cells (all red)
1 for strike cycle (green)
1 for foul (green)
1 for 1st ball (green)
1 for secound ball (green)

good for working out pin stands (weather or not its a casis problem, foul realy)

or sw6 (82/30 respot cell switch) (goes through a strike cylce)

or a pin stand and there is a foul (watch it and you will see if it is a chasis problem)

but it is a good idea saves a lot of stuffing around on machenes

[Rep]

Re: masking unit tester

Awesome little toy, I know I'd like one [img]/content/btubb/images/%%GRAEMLIN_URL%%/laugh.gif[/img]

[TheGMan143]

Re: masking unit tester

WangJ: Looks good! Handy little gadget to have around if you don't have lighted masks anymore... it can help troubleshoot a lot of probs. Esecially if you're still using a table cable. Nice job!

'Nut: Tanks a bunch... glad to know I can help. [img]/content/btubb/images/%%GRAEMLIN_URL%%/smile.gif[/img]

Rep: Go for it... they're not all that difficult to build, just a bit time consuming... basically it's just a miniature mask. Some LED's and resistors, a pindication mask cable, and some time, and you're hooked up.

Since we're using autoscoring and don't use the table cable anymore, one of my pet projects was to start mounting lamps in the corner of the chassis facing the backend that show 1ball, 2ball, strike, and foul (I actually wanted 6 indicators... those 4, plus the T/S contactors). Makes it very easy to see at a glance what state the machine is in electrically. It's another fairly easy project... drill 4 small holes in the chassis. mount the indicators, and solder them to the bottom of the board at the PM plug connector.

[Dutch]

Re: masking unit tester

Looks good, Wang. [img]/content/btubb/images/%%GRAEMLIN_URL%%/cool.gif[/img]

[TheGMan143]

Re: masking unit tester

Wang... one more thing... I hope you put resistors inline with those LED's, or they'll pop as soon as you power it up... Most LED's have an input voltage of about 2VDC at just a couple of milliamps, and will usually pop around 6V. The mask lamps run somewhere around 16-18VAC if I'm right... that's over 30V peak-to-peak. You'll definitely need to have some inline resistors to add some load and protect the diodes.

[8270_Wang]

Re: masking unit tester

Hey g thanks for the advice

Yes i did buy Leds with Inline resistors. So these Leds are designed for 12V. Also added the fact that the 12V supply for is unfiltered is more reason to get inline resistors. I tested it out Wed at work and all is good.

Wang

[TheGMan143]

Re: masking unit tester

Cool! Glad to hear it.

Get a pic of that little bugger in operation!

[TheLegend]

Re: masking unit tester

Damn good job, Wang. Even though I'm not working on 70's right now, I've been wanting to build one of those puppies myself.

[the_blue_dragon]

Re: masking unit tester

chances are with a standerd led's you can run 1 on a 9v battery (good batt. tester) and leds are very durable (just rember the long wire is positive)

but if you need a load just add a low voltage light to it it might remove the need for restors

if not rember ohms law
v=ir