Question W120 and S120 Ami Wallbox and stepper

Hi Folks

I have an AMi E120 jukebox and when I was restoring this machine I came across a S120 stepper and kept it for later in case I had ever come across a wallbox W120. I'm done restoring the jukebox and now I had this idea of using a raspberry pi and a dual channel relay board to create the pulses a wallbox would produce. I'm thinking I can do it with a little scripting but I dont have a wallbox to play with to get an idea of how the signal patterns look

the stepper only has two connections ground and signal the rest plug into the jukebox harness junction boxes

Do any of you know the correct operating voltage

Do any of you know the pulse train patterns from the wallbox to the stepper

Do any of you have a schematic for the inside of the stepper
I'm going to recap it but one of them has external damage right where the value is printed

I -believe' the "S" means for Seeburg wallboxes. If so, letters sent first A=2 pulses up to 11 pulses. The numbers are 1-10 pulses. Seeburg spec's them at 1/25th sec/duration w/a 1/5 sec transition between letters and numbers. The Seeburg boxes could only address 100 selections.

Again, I'm guessing the "S" is Seeburg and "W" is wurlitzer.

Rob/NYC

S is for stepper w is for wallbox

This is ami stuff

S is for stepper w is for wallbox
This is ami stuff

I can read.

I mentioned it because AMI and Later Rowe used a different pulse train than Seeburg or Wurlitzer. In the 50's they made special steppers to work with other wallboxes..

Rob,
AMi made "dedicated" steppers at least into the 70's/80's--I last saw one a few years ago, hooked up to 200 Seeburg WOM's, in a R-87--or maybe R-90---?? (it had a "defective" ice cube relay). Ron Rich

Ron, AMI/Rowe made a 'dedicated" stepper for the first two or three years of the 1100 mech. Around the time the WRA wallbox was offered (late 1965) the CGA type steppers were introduced. These used taper pins and could reconfigure for any e-m box. I have several here and have used them with Seeburg consolettes and V3W series as well as WRA-B-C.

The last e-m boxes (WRC) were made in early 1977. They may have offered e-m steppers for a while after that, but the emphasis was on code-convertors for the old boxes to use the digital machines.

Rob

Hi Rob,
What ever this thing was I saw ( and the only one I have ever seen), was a "stepper" of some type marked "for use with Seeburg 200 wall boxes". Ron Rich

Ron, the Rowe R80 (1976) was the last of the e-m boxes.

"..for use with Seeburg 200 wall boxes" That is what was stamped on the pre-CGA type steppers that could not (easily) be modded for different pulse trains. Those came in a gray metal box typical of fifties AMI parts.

In 1989 I stupidly passed-up a "Seeburg" search unit-stepper that could be used in an I-200. Exactly one year later I had an I-200m.

Rob

I -believe' the "S" means for Seeburg wallboxes.

Sorry Rob when I saw this I thought you were thinking otherwise but the widths may be worth experiementing around with

Hi Rob,
My great, but sometimes "mixed up" memory, says this one had the remains of a plastic cover, and was stamped as you state ? ( I would not place any bets, on this memory !!) Ron Rich

Ron, this -may- have been what you saw:
http://www.ebay.co.uk/itm/ROWE-AMI-JUKE ... 1186534353

Otherwise after the MM-1 it will look like one of these:
http://www.jukeboxparts.com/prod02.htm The two at the bottom of Rowe are actually code convertors for the digital machines.

There is ONE code convertor for Rowe that allows their CD machine (W 1015 look-a-like) to run Seeburg V3W boxes. I've seen this in a chain of retro locations called "silver diner" (I believe that was the name). I've never actually seen the box itself.

After a while, all this stuff starts to blend into one blob of mixed experiences.

Rob

Hi Rob,
For 100% sure it was not the first (electronic after market,replacement) type !
I can't view any "AMi steppers" on that page, but my memory says it had a plastic cover, and about a dozen "ice cube" relays on it ?? --like you said--a blob of mixed experiences ! Ron Rich

ok I've figured out that the S120 signal is 30volt ac and I've figured out the pulses required

this link is my raspberrypi 2 relay module tapping out the pulse codes for some of the selections
http://youtu.be/xFUn1XGFxGY


details on my finding for the pulse code can be found here
http://www.jbuffington.com/jbuffington/index.php/hobbies/10-ami-e120-jukebox-restoration

I'll add more to the restoration page when I have it fully functional its working but the connectors are not fitting very tight from the stepper to the jukes main wiring harness

I think the hot ticket would be to have the Raspberry Pi decode the pulses coming from any wallbox of your choosing and then output that information to make a selection on the jukebox.

I have been looking for a Rockola 507 wallbox and 1769 stepper for my 470 machine without much success. When I do spot them, they are usually pricey. I have already given some thought to programming a Pi to emulate a 1769. I think that would be pretty slick, especially if I could obtain the mating Molex connectors and have it "plug and play".

Keep us posted of your progress. It looks very interesting!

-Jim

man that would be hot I like the way your thinking. I looked into that a little bit and could probably read pulses from a wallbox with this modules here
http://www.amazon.com/range-Current-Sensor-Module-ACS712/dp/B008B656PO

If I come across a wallbox cheap enough to experiement with I'll have to try this