ENGL Z5 footswitch

[unpluggedman]

Hey! I've been working with my own version of the ENGL Z5 footswitch.

For those of you who don't know this pedal, it's a 6 button footswitch used to control 4 channels and master/mid options.
Original Z5 pedal is shown here: http://www.engl-amps.com/cms/uploads/tx_ddfproducts/Z_5.jpg

The pedal is connected to the amp using a 9-pin serial cable. However I don't know the correct pin configuration and in addition to serial cable port my amp (ENGL Powerball) offers also two stereo jacks for footswitch connection. One jack is for master A/B and mid open/focused and the other one is for Channel I/II and Gain Hi/Lo.
The combination of channel and gain options defines the channel to be used like so:
Clean: Channel I, Lo Gain
Crunch: Channel I, Hi Gain
Lead 1: Channel II, Lo Gain
Lead 2: Channel II, Hi Gain

So please take a look at my schematics and tell me what you think: http://imageshack.us/photo/my-images/268/footswitchcircuit.png/

Is there any chance for it to work? Any comments and suggestions are welcome!

[MetalGuy]

Hi,

You don't need to invent the schematic. Somebody already got that:

http://skynet3dhobbylife.blogspot.com/2010/03/engl-z5-footswitch-clone.html

I built it for a friend and it's OK but I did my own smaller one layer PCB because that one is messy (both pics are 300dpi).





Enjoy!

[unpluggedman]

Thanks for your post MetalGuy!

Couple of weeks ago I found that same Z5 clone schematic but it looked a bit too complex for me and also the PCB was too big.
But now that you've done a smaller version of that PCB, I think it would be better for me to build it because you've already verified the schematic.
Some questions crossed my mind while taking a closer look at the schematic and BOM:

- In the BOM S1...S6 are for some reason typed as jumpers instead of switches but are they all meant to be non-locking (momentary) switches? Even S5 and S6?

- Can I replace that 10uF / 63V cap with 10uF / 50V one? Or do I have to use 10uF / 100V cap?

- Are the following markings equal:

684J63 = 680nF / 63V cap
104J63 = 100nF / 63V cap
C4V7 = 4.7V 0.5W Zener diode
M74HC109B1R = 74HCT109N (like this one: http://fi.farnell.com/nxp/74hct109n/ic-74hct-cmos-74hct109-dip16-5v/dp/381962)

- Can you provide me the correct pin numbering for the DIN-9 connector so I know which of the pins is PIN1, PIN2 and so on.

[MetalGuy]

- In the BOM S1...S6 are for some reason typed as jumpers instead of switches but are they all meant to be non-locking (momentary) switches? Even S5 and S6?

All switches are momentary.

- Can I replace that 10uF / 63V cap with 10uF / 50V one? Or do I have to use 10uF / 100V cap?

Yes, no problem.

- Are the following markings equal:

684J63 = 680nF / 63V cap
104J63 = 100nF / 63V cap
C4V7 = 4.7V 0.5W Zener diode
M74HC109B1R = 74HCT109N (like this one: http://fi.farnell.com/nxp/74hct109n/ic-74hct-cmos-74hct109-dip16-5v/dp/381962)

Yes to all.

- Can you provide me the correct pin numbering for the DIN-9 connector so I know which of the pins is PIN1, PIN2 and so on.

It's not a DIN connector (tehy are max 8 pins) but D-sub 9 pin PC type of connector like these:

http://fi.farnell.com/jsp/search/browse.jsp?N=2013+203438&Ns=P_PRICE_FARNELL_FI|0&Ntk=gensearch&Ntt=d+sub+9+pn&Ntx=mode+matchallpartial&suppressRedirect=true&originalQueryURL=%2Fjsp%2Fsearch%2Fbrowse.jsp%3FN%3D2013%2B203438%26Ntk%3Dgensearch%26Ntt%3Dd%2Bsub%2B9%2Bpn%26Ntx%3Dmode%2Bmatchallpartial%26No%3D0%26getResults%3Dtrue%26appliedparametrics%3Dtrue%26locale%3Dfi_FI%26divisionLocale%3Dfi_FI%26catalogId%3D%26skipManufacturer%3Dfalse%26skipParametricAttributeId%3D%26prevNValues%3D2013%2B203438

The pins numbers are marked on the connector itself.

Here's a picture of an actual Z5 connector:

http://www.musik-schmidt.de/images/product_images/popup_images/Engl-z5_3.jpg

[marmaliser]

Using the info here I have made myself a Z5 footswitch.

I decided to make my own PCB using Diptrace and I would like to share the files in case anyone else needs them in the future.
There also a nice redrawn schematic in pdf format


https://www.dropbox.com/s/u3jsm9jdlad9puy/3dboard.JPG?dl=0
https://www.dropbox.com/s/xcw1p8au1as3cdf/z5-schematic%20-%20marmaliser.pdf?dl=0
https://www.dropbox.com/s/48fm3upp95azvtr/Z5%20Schematic-marmaliser.dch?dl=0
https://www.dropbox.com/s/u2zl51v36p3eaku/z5%20marmaliser.dip?dl=0

If anyone would like one of my spare boards drop me a PM

[J0K3RX]

Using the info here I have made myself a Z5 footswitch.

I decided to make my own PCB using Diptrace and I would like to share the files in case anyone else needs them in the future.
There also a nice redrawn schematic in pdf format

Nice man, thanks for the share! 

[Rhandy]

Thanks a lot Marmaliser for your PCB.

Only one question. What type of db9 cable or rs232 you use. Is straight or crossover?

this one



or this



you use male /female or male/male?

what type of conector you use on PCB board?

[marmaliser]

It's straight through cable , female at footswitch end and male at amp end

[Rhandy]

LET ME THANK YOU MARMALISER!

You help me to make my custom ENGL Z5 FOOTSWITCH.

You give me all support during more than 20 days!

I open one new thead just for thank you!

[slash_83]

I. M not a letto ti amo download file a. Any help?