Muff's Modules & More

J3RK · Posted: Wed Nov 30, 2011 12:24 pm Post subject:

Sorry, I should be able to pop the BOM up tonight. It's created, just need to copy/paste it.

Things have been incredibly busy at work for the past couple of weeks, so I've been a little slower than I'd like.

J3RK · Posted: Fri Dec 02, 2011 7:36 pm Post subject:

Ack! I must sincerely apologize, for I'm living up to my forum name. I need to get that BOM up. I'm sending myself a calendar reminder to do this right now. d'oh!

Sorry about that. It'll be up tonight. Orders will stay open through the weekend, and the production run will be ordered Mondayish. Thanks again, and I'll set up us the BOM shortly. hihi

J3RK · Posted: Sun Dec 04, 2011 1:32 pm Post subject:

Sorry for the long delay. Here is the BOM. It's fairly simple. Caps are .1" lead spacing for non-electrolytics. The electrolytics are .125"

fivesteppath · Posted: Sun Dec 04, 2011 3:24 pm Post subject:

pm'd.

303monkey · Posted: Wed Dec 07, 2011 12:08 pm Post subject:

I wanted one of these too

fivesteppath · Posted: Sat Jan 07, 2012 11:57 pm Post subject:

Before I order a few would this badboy be good for the job?

http://www.mouser.com/Search/ProductDetail.aspx?R=SR2511F-0303-19R0B-E 9-S-Wvirtualkey14860000virtualkey105-SR2511F-33S

Jarno · Posted: Wed Mar 07, 2012 10:29 am Post subject:

Dustin, do you have a layout picture of these boards, and a schematic?

I usually mark which components I did and didn't place, and also for remembering to order certain components.
The schematic is useful to determine possible component substitutions.

J3RK · Posted: Wed Mar 07, 2012 2:24 pm Post subject:

Jarno · Posted: Wed Mar 07, 2012 2:43 pm Post subject:

Thanks! Boards look great btw. Like the layout of the 258 boards as well lots of room for different types of components.

FrankV · Posted: Mon Mar 12, 2012 2:54 pm Post subject:

J3RK · Posted: Mon Mar 12, 2012 5:18 pm Post subject:

I'm putting together a bit more information for these now. In the design/schematic, I'm using a three position rotary switch. Since I've just been using a jumper-wire to select on the bench, I'll have to think about wiring a non-rotary switch. Should be pretty easy. It's in ping-pong mode with nothing wired there by default.

J3RK · Posted: Mon Mar 12, 2012 11:24 pm Post subject:

Here's the schematic for the FlopSeq Sequencer. I'm linking it, rather than posting the image, as it's pretty large.

http://home.comcast.net/~r3cogniz3r/flopseqschem.jpg

If anyone has any suggestions on using a more standard switch, by all means post! thumbs up

I haven't had much in the way of time to revisit this in a while. (though I'm still planning the larger sequencer for down the road a wee.

FrankV · Posted: Tue Mar 13, 2012 8:04 am Post subject:

Cool! Thanks for posting.

F

Citisyn · Posted: Thu Mar 22, 2012 7:28 pm Post subject:

OK, I'm having no luck getting this thing to work. Could somebody help me troubleshoot?

Here is what's happening:

With mode switch in pingpong (or disconnected) the counter counts up to 10 and resets to step 1. With switch in one of the other positions it will skip either step 1 or step 8.

Probing around I've discovered that pin 1 of U5:A is staying high regardless of the states of pins 4 or 6. I'm pretty sure that is the problem, but I can't figure out why it's doing that. I've tested the chip on a breadboard and it seems to work fine.

Any ideas?

J3RK · Posted: Fri Mar 23, 2012 3:14 pm Post subject:

Citisyn · Posted: Fri Mar 23, 2012 6:47 pm Post subject:

CJ Miller · Posted: Mon Mar 26, 2012 5:34 pm Post subject:

How crucial is the 470ohm value for those resistors? I am surprised to be short of them. I could replace them in a few days, but also I have others between 390 and 510 ohms. Any idea what sort of behavior I should expect if I increase or decrease this value?

Thanks so much for these great boards! Very much looking forward to the expanded FlopSeq.

Citisyn · Posted: Mon Mar 26, 2012 9:36 pm Post subject:

CJ Miller · Posted: Tue Mar 27, 2012 9:35 am Post subject: