OK! I give up! I will order a few the next time I order from someone who has them. I have a few 8088's around but I won't start any new project with them... John Ferrell 6241 Phillippi Rd Julian NC 27283 Phone: (336)685-9606 Dixie Competition Products NSRCA 479 AMA 4190 W8CCW "My Competition is Not My Enemy" ----- Original Message ----- From: "Herbert Graf" To: Sent: Thursday, August 09, 2001 4:04 PM Subject: Re: [PIC]: Building a Servo > Hehe, it's funny you mention that, I had almost the exactly opposite > reaction lately. I've been working with the 16F877 on a different project > for a while and when I picked up the 16F84 datasheet I couldn't BELIEVE how > much was missing!! The register description section is so short, all the > diagrams feel so short and small! Then I looked at the 16F628 datasheet and > I said to myself "now THIS is more like it!" :) I'm kinda surprised it took > Mchip this long to come out with such a nice chip (heck flash parts are > relatively new aside from the 16x84). > > Btu on the other side the 16F84 has alot fewer "gotchas", especially when > setting up the chip (I remember with the 16F877 looking through every pins > description to make sure I hadn't missed something, like disabling the ADC > for that pin, etc.). Simplicity does have it's virtues. TTYL > > > -----Original Message----- > > From: pic microcontroller discussion list > > [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of John Ferrell > > Sent: Thursday, August 09, 2001 15:38 > > To: PICLIST@MITVMA.MIT.EDU > > Subject: Re: [PIC]: Building a Servo > > > > > > Speaking as one who is on the leading edge of the learning curve, > > something > > with training wheels would be good. No doubt about it, there is more > > information and help available for the 16F84 than anything else. It is the > > best place to start. I bought these and some 16F874's to start with and I > > doubt I will need any thing else until some of the clouds clear. > > > > I looked at the datasheet on the 16F628 and decided it best to > > wait a while > > for that one! > > > > John Ferrell > > 6241 Phillippi Rd > > Julian NC 27283 > > Phone: (336)685-9606 > > Dixie Competition Products > > NSRCA 479 AMA 4190 W8CCW > > "My Competition is Not My Enemy" > > > > > > > > ----- Original Message ----- > > From: "Byron A Jeff" > > To: > > Sent: Thursday, August 09, 2001 2:56 PM > > Subject: Re: [PIC]: Building a Servo > > > > > > > On Fri, Aug 10, 2001 at 03:44:21AM +1000, Roman Black wrote: > > > > Herbert Graf wrote: > > > > > > > > > > That's the plan, I'm actually going to do three channels and for > > simplicity > > > > > I plan to use a seperate PIC for each channel with the same > > basic code > > (the > > > > > differences in code will be due to the complexity of the control > > needed (ie. > > > > > some will have position feedback, others won't) and the motor being > > driven > > > > > (using a stepper on one channel and DC motors on the other > > two)). TTYL > > > > > > > > Hi Herbert, first, i'm with you on the 16F84 issue, > > > > I have hundreds of them and use them for anything > > > > I want to whip up quick, whether "too simple" for > > > > a 16F84 or "too complex" for a 16F84. The fact that > > > > I have the chips, the boards, and many code projects > > > > with register setups completed makes it easier to use > > > > the chips you always use. You don't have to explain > > > > WHY you're using a 16F84. :o) > > > > > > As one of the advocates of the new parts, I'd like to explain that the > > > suggestion really isn't directed to the old hats on the list. > > I'll usually > > > throw in my two cents when I see a post that starts with "I'm starting > > > out with PIC and I have some questions about the 16[CF]84[A]." > > > > > > Most of the time those folks simple do not have enough exposure > > to realize > > > that there are newer/faster/bigger/cheaper/more fully featured parts out > > there. > > > They think 16F84 because the vast majority of pages and > > projects out there > > > specify the part. > > > > > > If you're starting out there's simply no comparison. Simply from price > > alone > > > the part is the winner. Just looked up on Digikey for 25 part quantity: > > > > > > 16F628: $55 > > > 16F872: $70 > > > 16F84A: $92 > > > > > > All for the 20 Mhz part. > > > > > > And since the 16F628 has an internal 4MHz oscillator it gets > > even cheaper > > > for timing insensitive applications. BTW I noticed that the 4 MHz parts > > were > > > only pennies cheaper (14 to be exact at the 25 part price), > > that little is > > > lost buying on 20 Mhz parts. > > > > > > Everyone that's taken a spin around the block knows all the > > strengths and > > > limitations of each of the part subfamilies. And of course if > > you'd got em > > > and they can do the app, use them. > > > > > > But I think we'd be remiss as good PICLIST citizens not to inform > > newcomers > > > about the advantages of the latest technology. > > > > > > BAJ > > > > > > -- > > > http://www.piclist.com hint: To leave the PICList > > > mailto:piclist-unsubscribe-request@mitvma.mit.edu > > > > > > > > > > -- > > http://www.piclist.com hint: To leave the PICList > > mailto:piclist-unsubscribe-request@mitvma.mit.edu > > > > > > > > -- > http://www.piclist.com hint: To leave the PICList > mailto:piclist-unsubscribe-request@mitvma.mit.edu > > -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu