Dale Botkin wrote: >Umm, yeah, it DOES sound like almost every other prototype or projct board >out there. Other than all that extra hardware and all, that is... 8-) >ICSP would be nice, but personally I'd never expect to see a ZIF socket or >ICD support. Not with that kind of density and cost. It looks awfully >good to me for a few projects. > Hi Dale, :) I do have in mind a stripped down version, with no opamps and no driver chip and no H-bridge chip. Just a regulator and a PIC and a MAX232. But it one will have a ZIF and ICSP, and sell for peanuts too. best regards, - dan michaels ================== > >On Thu, 3 May 2001, James Newton wrote: > >> Amazing... >> >> ...so no one with an ICD will be able to program the chip on the bot board >> and single step code while running the bot? >> >> ...and you can't use a bootloader? >> >> ...so, pretty much, you program the chip off the bot, insert it in the bot, >> and hope it works? >> >> ...and that's NOT a ZIF socket, and it doesn't look like there's room for >> one... >> >> wow... >> >> --- >> James Newton (PICList Admin #3) >> mailto:jamesnewton@piclist.com 1-619-652-0593 >> PIC/PICList FAQ: http://www.piclist.com or .org >> >> -----Original Message----- >> From: pic microcontroller discussion list >> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Dan Michaels >> Sent: Thursday, May 03, 2001 13:10 >> To: PICLIST@MITVMA.MIT.EDU >> Subject: Re: [OT]: Pic-O-Botboard >> >> >> >> To Roman, TomH, Jinx, RichO, and others: >> >> >> >> After dawdling for months on this project, I finally got around to >> >> designing my PIC botboard - which we talked about some time ago. >> >> Basically, a PIC-based replacement for the 68HC11-based botboards. >> >........ >> >> >Preliminary info at: http://www.oricomtech.com/bot40.htm >> > >> Roman wrote: >> >Looks good Dan! Lots of hobby robot people will >> >like those. Hard to give you actual feedback re the >> >peripherals wihtout some basic circuits, like for >> >the opamps etc, like how many parts you could add. >> >It's nice to be able to add a RC network with cap >> >to ground and or diode, at the opamp input for >> >unusual signal types. >> >> >> Thanks for the feedback, guys, both onlist and offlist. >> >> No room on the present board for ICSP. Also, the opamp ckts are >> verstaile designs and allow various changes by leaving out & jumpering >> components, etc. Also, separate pullups are provided, and the 2 >> inverter ckts have additional output parts: >> >> pullup >> O----------R7---------| +5v >> >> >> +5v >> | LM358 or >> R2 LMC6032 >> | | \ >> +--------|+ \ D1/R5 >> | | >----+--------|>|-----+---+--->to A/D >> O----C1---R1-------+---|- / | diode | | >> | | | / | or R6 C4 >> O----C2-------+ | | resistor | | >> | +-----R4------+ +-+-+ >> R3 | | | >> | +-----C3------+ gnd >> | >> gnd >> >> This shows the basic ckt for all 4 amps. Two are inverters, where >> input is to C1 and C2 is grounded. Two are non-inverters, where C1 >> is grounded, and the input is to C2 -[the two non-inv do not have >> the output parts - D1/etc]. >> >> Note that you can play games with C1/R1 and C2 to make them dc-coupled, >> and fiddle with D1/R5 on the output side to make different ckts, peak >> detect, or low-pass, etc. Gains are adjustable via R1/R4, and BW via >> C1/C3/C4. >> >> The inverters are better for high ac-gain, where you want to limit the >> possibility for oscillation, and the non-inverters can be configured for >> low-gain dc-coupling of sensors. 2 pullups [R7] are available for biasing >> external electret mikes/sensors/etc. >> ================= >> >> > >> >Extra 2803 is cool, that gives 8x darlington output >> >drivers. >> > >> >> I did some more fiddling with this area of the pcb, so you can now >> mix and match port B pins "simultaneously" for: direct I/O, ULN2803 >> driver control, direct servo control. >> >> So you could could control say 2 servos with their own external power, >> 4 darlington drivers to LEDs/relays/motors/etc with hi-V power, and >> also use 2 port B pins as direct I/O. OR any other combination of 8. >> =========== >> >> >How does LCD connect? Just use a dedicated digital >> >IO port?? >> >> Ummm - there aren't enough pins on a PIC40 to add an LCD and still >> have all the other stuff that I have here. However, I "could" >> leave out the ULN2803 and put in an LCD, but ......... >> >> Unfortunately, you can only push 40 pins and a small pcb and >> not-smt and still cheap just so far. There's lots of other things >> I wish I could put on there, but ........... >> >> Actually, the idea is to have a basic standalone controller board, >> and also the possibility to stack another SBC on top for additional >> things, and talk between the two via RS-232 - using subsumption >> architecture techniques: >> >> http://www.oricomtech.com/emerge6.htm#Teli2 >> ================= >> >> > >> >I always find a dipsw or some 0.1 inch jumpers are >> >handy. >> > >> >> On-board dipsw was added in the latest go around. Can also add >> a number of external dipsw and bumper sw - up to 9. >> ============ >> >> >Anyway, it looks great! Is it size legal for >> >minisumo (10cm cube) or micromouse (150mm square)?? >> >-Roman >> >> Ummmm, don't know. This thing has grown and grown as I have added >> features - started as 2.5"x3.5", now 2.5"x4.1" [6.3cm x 10.4cm]. >> >> best regards, >> - Dan Michaels >> www.oricomtech.com >> ======================= >> >> -- >> http://www.piclist.com hint: The list server can filter out subtopics >> (like ads or off topics) for you. See http://www.piclist.com/#topics >> >> -- >> http://www.piclist.com hint: The list server can filter out subtopics >> (like ads or off topics) for you. See http://www.piclist.com/#topics >> >> > >-- >http://www.piclist.com hint: The list server can filter out subtopics >(like ads or off topics) for you. See http://www.piclist.com/#topics > > > > -- http://www.piclist.com hint: The PICList is archived three different ways. 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