It is obvious that you can't offer compatibility at pin (port) level but you can do it at least at (available) peripherals level. Considering that you have independent analog inputs, then this is perfectly possible regarding to SPI, I2C, digital and analog. And in my opinion this is enough. For the four PWM outputs, the Arduino user will have to learn the "position/pinout".
On Jul 6, 10:01 pm, funlw65 <[email protected]> wrote: > Try to make directly an Arduino Clone. It is a chance to make it > compatible at hardware level regarding to I2C and SPI. The second SPI > can have mappable pins (but not his I2C companion), so, use I2C from > the first MSSP as Arduino I2C (identical pinout) and SPI from the > second MSSP as Arduino SPI (identical pinout) and you will have a > board compatible at hardware level, not just software level, as is the > case with FreeJALduino. I know because I studied the "problem" but I > got scared by the FTDI requirement. This is why I'm waiting for a > better version of 18F2550... if ever... > > I dislike the sandwich thing... do it as separate design from the > beginning. > > Vasi(funlw65) > > P.S. IMHO, Amicus18 had the chance to do it right regarding to Arduino > design, but... they didn't....Bad choice for microcontroller and not > so good design... they did the mistake when they tried to be still > different... but this is only my opinion > > On Jul 6, 9:08 pm, Sebastien Lelong <[email protected]> > wrote: > > > Hi guys, > > > 2010/7/5 m...@watty <[email protected]> > > > > 44 pin or 64pin 18F67J50 SMD with option for USB mini or micro > > > connector on cuckoo board > > > Such a board would act as an extension of existing Arduino, but I doubt it > > can be done without SMD components, right ? > > > > 6 pin ICSP on cuckoo too > > > this seems mandatory, indeed, even if it takes room. > > > > option for on board crystal. > > > What about selecting onboard Xtal (16MHz for Arduino 2009) or internal clock > > ? I could add another Xtal on Cuckoo board but I have doubts about room... > > > > option for 5V to 3V regulator > > > Do you mean to power the PIC ? > > > > Can be used in Arduino or as standalone module. > > > That would be great, something > > likehttp://www.solarbotics.com/products/kardw/. > > > About PIC selection, I've found 18f26k22 as an interesting candidate: > > - 64KB memory > > - 2 * USART > > - I2C *and* SPI (2 * MSSP) > > - independant analog pins, easier to map pins > > - clock up to 64MHz, 16MIPS > > - 3 external interupts > > - 2 * PWM output > > > but not in production... Little brother 18f25k22 can be sampled, but "only" > > have 32KB memory. I'll try this one I guess. On the other side of the nest, > > Arduino provides: > > - 1 USART > > - 2 external interupts > > - SPI > > - I2C within ADC pins > > - 6 PWM channels (this can't be defeated...) > > > This can be cuckooed by 18f25k22 :) > > >http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en546240 > > > Cheers (Groeten) > > Seb > > > > On Jul 5, 4:29 pm, Sebastien Lelong <[email protected]> > > > wrote: > > > > Hi guys, > > > > > The Cuckoos are a bird family, known to be brood parasite. Mother Cuckoo > > > > lays its eggs on other bird's nest. Baby Cuckoo will be brooded and when > > > > hatched, will clear the nest from other eggs. It will be fed, for free, > > > > until it often reaches ten times the size of its parents (which seem > > > dumb > > > > enough not to mention the subterfuge). > > > > > This gave me an idea for another Jaluino family. Codename: Jaluino > > > > Cuckoo > > > ! > > > > > The idea is to unplug ATMega168 from Arduino Duemilanove and plug a > > > > Microchip PIC instead. A small PCB would probably needed to map pins. I > > > had > > > > a look potentials PICs, like 18F2680, 18F2620. 18F2550 isn't that useful > > > as > > > > there's no USB on Arduino Duemilanove. It would need UART, I²C, PWM, ADC > > > > (preferably with independent pin), and should run as fast as possible > > > with a > > > > 16MHz externak Xtal. > > > > > Does it sound doable ? Suggestions ? Warnings ? > > > > > Cheers, > > > > Seb > > > > -- > > > > Sébastien Lelonghttp://www.sirloon.nethttp://sirbot.org > > > > -- > > > You received this message because you are subscribed to the Google Groups > > > "jallib" group. > > > To post to this group, send email to [email protected]. > > > To unsubscribe from this group, send email to > > > [email protected]<jallib%[email protected]> > > > . > > > For more options, visit this group at > > >http://groups.google.com/group/jallib?hl=en. > > > -- > > Sébastien Lelonghttp://www.sirloon.nethttp://sirbot.org -- You received this message because you are subscribed to the Google Groups "jallib" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/jallib?hl=en.
