smashtv

Heya Rowan! Take a look at http://www.swcp.com/~jchavez/osmond.html. I used Osmond for several board designs before I moved over to Eagle. It was very useable and has a quicker than average learning curve compared to most of the PCB layout apps out there. Have fun! SmashTV

682 is a 6.8nF cap, the Z is a tolerance code, meaning +80%, -20%. Most common ceramic capacitors are "J" tolerance (+/- 5%). For more info on the cryptic capacitor codes see http://xtronics.com/kits/ccode.htm Have fun! SmashTV

You guys should look at using a relay attenuator, Take a look at http://www.recording.org/postt1290.html and you might do a search for the "relay attenuator" on the same forum. You can get as many or more resistance "steps" with a relay attenuator as a digital potentiometer, without as much coloration of the signal. I'm looking at this as a way to eliminate the potentiometer and stepped rotary gain switch from some pre designs I'm working with. Have fun! SmashTV

There is plenty of web space for you Drumwide, just say the word. 8) Have fun! SmashTV

Hey all! The PGA files are up and ready for download. Have Fun! SmashTV

Looks like only the shortcuts or aliases made it to the server, not the actual files..... Pilo if you send those to me I'll put them up. ;) Have fun! SmashTV

Heya All! I have written a Javascript calculator to figure the PIC ID header that must be written the PIC when you burn the bootsrap loader. Hopefully this will end the ever-repeating question! ;) Check it out at: http://mbhp.coinoptech.com/idgen.html Have fun! :) SmashTV

Good question! I'm about to start looking into that myself. I know budget robotics http://www.budgetrobotics.com sells 12" x 12" sheets of it, but I'm sure it can be found cheaper. I'm wondering if it's a hardware store item. If you dig any up let me know please! Best SmashTV

Hartschaumplatte=Expanded PVC Best! SmashTV

The standoffs should only be an issue if they are in contact with a pad or trace (possible on some of the boards with the wrong standoffs) and connected to each other (mounted to a metal plate). The 8v where logic levels should be reminded me instantly of the Joust standoff short and how it still kinda worked. Also I don't know if the MIDI out of the master could drive all of the slave MIDI ins simply connected in parallel, but it should drive one no problem. Don't hit it with a hammer yet! ;) SmashTV

Did you try just the master and one slave ran this way? Still grasping..... ;) SmashTV

This is a total shot in the dark: Are your boards mounted via metal standoffs? If that were the cause I would expect that things would not work at all but I don't know about your power supply, and I havent studied the C64 PS mods. I once repaired a Joust arcade game where through a fluke (bad handling by the game movers plus someone else's failure to put all of the pcb mounting screws back in) the +12v was shorting to different address/select lines on the sound board (that normally run at +5v). None of the logic was damaged after months of these intermittent shorts, and the game would actually play the wrong sounds, reacting to the 12v like a normal logic level select signal. Are you definately getting an 8v reading there on the 595's? Trying to help you grasp at straws..... ;) SmashTV

W005M=50V Peak Inverse Voltage, 35V RMS Reverse Voltage, 1.5A I usually ship a W06G (600 PIV, 420Vrms) or W08G (800PIV, 560Vrms) with the Core kits. Yours should work though, A bridge made up of four 1N4001 is said to be overkill for the Core, and your bridge rec has higher specs than a 1N4001 (but not by much). I cant speak from personal experience though, I always use a 1N4007 when any 1N400x is called for, and at least a W06G in place of any WOB case style bridge rec. Cost is usually the same as the lower spec parts and it never hurts to overbuild a power supply! ;) If the blue one is 330nF/.33mF give it a try, if it gets hot or the core does not work pull it out (the Core will work without it, but since C6 is a filter cap it might not work reliably depending on other factors) Have fun! SmashTV

No. You send MIOS and your app via MIDI, from Midiox. The JDM to Core connection is leftover from the days before the bootloader, so you would not have to pull the PIC from the Core to write a new app to the PIC. Have fun! SmashTV

You are correct, the only part you program with the JDM is the bootloader. Then you load MIOS and your app via Midiox. Best! SmashTV

Heya Dave! A Zener diode is what you want for this. 1N4739 is a 9.1V 1W Zener, you should be able to find this at any electronics supplier. 1N4739A is also fine. If you want to send it to me I'll program it for you, just send me an email if you want to go this route. :) Best! SmashTV

Heya Jimminy! The continuity you are reading between Vs and Vd is probably from the bypass/filter capacitors, most of the time these will make it look like +V is shorted to ground. Best! SmashTV

Heya Jim! If you post it here we can hammer out the rough spots in the language together and I'll put it up on the portal, for a permanent reference. :) Have fun! SmashTV

In my travels as a coin op game tech, I have worked with all types of touchscreens (resistive, capacitive, and infrared) and I have learned a few things about the differences: Most smaller (under 12 inches) touch screens are the resistive type, and they work poorly with finger touch, but great with a stylus or other similar device. Palm pilots and the like have resistive screens. Most larger touch screens (almost all that are used on a CRT) are capacitive, those work great with finger touch but a stylus or other hard object will ruin most of them quickly. Infrared screens are a whole different animal, and are usually only used where extreme durability is required. They use a line of leds along two edges and a line of phototransistors along the other two edges. Obviously not used with CRT's because of the curvature of the tube, and the resolution is typically half or less of the other types. Infrared screens are the only type that are repairable if damaged. Most of my experience is with Microtouch brand capacitive screens, but I have successfully interfaced both capacitive (with a Microtouch controller) and infrared (with a Vishay/Dale controller) to the lighting controller with a little work in MAX. With all types the controller must match the screen you are working with, and with capacitive and resistive it must be calibrated to your screen. Most of the ELO brand screens use the same technology and control/data schemes as Microtouch, which can be as simple as an RS-232 serial interface feeding a number for X position then a number for Y position. You can usually kick the controller into more complex modes of communication though, like "send data only on touch or change" mode, or "extrapolate data around this dead spot" mode..... ;) Some screens/controllers also send pressure data, but this is so closely related to temperature and the operator's ground potential that it is useless in most applications. (speaking from experience, might be different in areas of different climate than mine) Sorry for the novel-size message, just trying to pass on some things that might help...... :) Have Fun! SmashTV

Sorry, I only do the bootloader. There are just too many application variations for me to offer chips with MIOS apps on them also. Best! SmashTV

I almost forgot to mention, there are chrome paints on the market that when sealed correctly with clear are impossible to tell from a real chrome job. The bonus to these is that you can put a mirror (or matte) finish on anything you can spray paint. Also here in my area some auto dealer body shops have powder coating rigs, I used to have soda machines powder coated when I would restore them, and I have had a few smaller parts and control panels powder coated. Extremely durable when done correctly. Have fun! Smash

It's a great thought, etc....but.....You might want to know that one of the by-products of this process is hexavalant<sp> chromium, which causes cancer and other massive health problems. If hex cro sounds familiar, it's the stuff that was killing people in the Erin Brockovich movie, based on a true story, and was a huge lawsuit/settlement here in the US. Back when I was younger you could find a custom chrome shop anywhere that did car parts and motorcycle parts to chrome your stuff. Now the EPA (environmental protection agency) has outlawed parts of the process, since hex cro seeps into the water table so easily and does not filter out when waste water is returned to the water supply. So now when you need to get something chromed, it costs a fortune if they use the old process (waste fees, etc) or you can have a newer process done thats more legal but still expensive and much less durable. Bottom line is that this produces tainted water, that can't be released into the water supply, can't be concrete mixed, etc. that causes severe problems for people even with minimal exposure. Sure wish they would have figured this out in the 70's! Most countries have environmental laws that forbid this process. I'm not a chemist (as you can see!) so if you have any interest in this please read any info related to the Erin Brockovich case(s), this info is plentiful on the net. Be safe, wear a respirator, don't bury or burn the evidence! Smash

:) The lead guitar player (Big Cookie) is a tube purist, he builds his own line of amps, and some of the guitars that the band plays (Cookiecaster). He actually has a bumper sticker on his truck that says "Use a transistor, go to Jail". (I have seen it!) His line of amps sounds stellar, there were almost no changes made in the guitar sound from recording to final mixdown. I have mixed some very good sounding guitar rigs in my life, and some very bad ones, but with this guys stuff you literally place the mic, zero the eq, and you are ready to go. I enjoy teasing him at every opportunity, by mounting fake tubes lit with LED's on and in digital things, having the roadies replace his amp head with a POD during show setup, etc. I'm not really a blues fan myself, but when I met these guys and saw the fun being had by all there was no going back. Plus they play enough classic rock covers and technically challenging music live to keep me interested. ;D Any Midiboxers that live in the Dallas/Fort Worth Texas area should contact me about coming to see a show as a guest, You will have a blast! Have fun! SmashTV

Check out:http://aries.web-hosting.com/~bobzilla/music/. These are some short samples of a release I just engineered. The editing was done with a Midibox as a controller. The band is Big Cookie and The Crumbs, a Texas Blues/Rock band. Sorry I can't post the full songs, but they are not mine to post... ;) The rest of the bands info is at http://www.cookiecrumbs.tv , and if you are in the Dallas/Fort Worth area come see them live! (email me so we can get together) Have fun! Smash

You might try these as an alternative to a true edge connector,http://www.mouser.com/index.cfm?handler=displayproduct&lstdispproductid=231665&e_categoryid=45&e_pcodeid=51727 (not really what you asked for, but it might work better with so few contacts) Also see: http://www.mouser.com/index.cfm?&handler=data.listcategory&Ntt=*58730652010*&Dk=1&terms=587-306-52-010&D=587-306-52-010&N=0&crc=true These will probably need a larger than normal hole in the pcb for the pins. You should get them with mounting flanges, so you can bolt through the flanges and board to keep insert/remove strain off of the pins. Have fun! Smash