T&L Publications

Wow, I really like that way of approximating the value. It's really interesting, gets the mind going a bit to think about it all.<p>Just curious: I've never seen one before, what all comprises an inductance meter? How would it function? From the sounds of the math involved, the meter would consist o...

Yeah I do know what you're talking about. That VU is probably just a few comparators and resistors, and that's essentially what I'm talking about here.<p>Looks like this:<p>condensor mic->op-amp buffer->comparator->counter->counter->LEDs.<p>The double counter system will be able to slow down the rat...

I can give you a hand. It's a cool idea, so I'll go ahead and play around and make one for myself.<p>I have a schematic of what SHOULD work, but I'm not sure what it would really look like, so I'll build it up and mess with it. After that, I can mail you a hard copy of the schematic along with the c...

Thanks!! That would help out a lot, I'm just waiting on the 16F628 samples to get here from Microchip.<p>~Kyle

I need some hex code I have loaded onto a PIC...the PIC is a 16F628, and I need the code on the PIC to use for, ironically, a PIC Programmer.<p>I want to build the Wisp628 programmer, and it needs to code on the PIC, so of course, I have no way of programming the PIC to use in the Wisp628.<p>If anyo...

Really....what does it do? email me....

Yes actually, they are those you are referring to. 16MHz it is then...good!<p>Thanks for all the help
~Kyle

Still wondering what speed these crystals I have are.......M1600KJ9<p>Thanks,
~Kyle

Thanks for the reply.<p>I don't have any idea who the manufacture is, the only labling on the crystals is M1600KJ9.<p>I guess if all else fails I can put them in a circuit with a PIC that generates a one second pulse and calibrate it for a 16MHz crystal, and then try it with a 1.6MHz and check to se...

Here's a simple question, I should know this, but alas, I do not:<p> How do you read the frequency of a crystal? I have a TON that are M1600KJ9, and I'm guessing 16kHz? or is it 16MHz?? I don't know......help!<p>By the way, they're just normal crystals, not TTL clocks or the like.<p>~Kyle

I used a bench power supply and set it to the -20V I needed, and then used a pot to adjust the contrast.<p> It's a really low current signal, so I guess you could just use a -24V power supply and run that through a pot wired as a rheostat, messy, but it's a fast and cheap way.

Did the code I sent you not work? I've tried it before and it should work perfectly...did you connect everything as it says in the start of the code?<p>Which version of the STAMP are you using? what I sent you is for the bs2...it might have to be ported to the version you have.<p>~Kyle

I believe I can help you...<p>I'm still not clear exactly what it is you are looking for, but I am pretty sure.<p>You can use an electret condensor mic run into an op-amp for gain and that can go into a comparator. The threshold can be set on the comparator and can be wired to a pot. This allows you...

The Wisp628 uses the UART of the x628 chip, so it can't be ported to the '84, unless I add a bit-banging serial interface. I can port it to an '877 though, cause I have some of those sitting around.<p>I do have the PPP program from EPE, although I have not tried it yet. The 13.7V programming voltage...

Yes, I know the title is an oxy-moron.<p>I have been trying the various no-parts programmers available on the internet, and none of them have worked very well at all. Meaning: they will ocassionaly program the PIC but mostly not. As you know by now, I have limited resources, and can't buy a full-fea...