Hi everybody,
I’ve started since few days with Panda II (working professionnaly with Rabbit & PIC)…
I know now how to write textes on the display,
how to show images on the display,
how to generate sound, commands,
how to communicate serially,
how to read analog input & temperature,
and how to use button events …
BUT, I HAVE NOT ENOUGH GPIOs FOR THE PROJECT
I SHOULD PRESENT TO MY BOSSES IN 2 WEEKS !!!
Where I can have the PinOut of the Display to use remaining GPIOs ,
Is there a cheaper solution than adding others Panda II modules fors extra inputs ???
My project uses actually 2x Panda II as extension,
Does GHI produce extra GPIOs modules (SPI,…) for Panda II ?
I’m usinf the display (40 I/O-? are then used) … and I need 15 to 30 extra I/O Actually : 6xDig In, 7xDig Out, 2xtemp. sensor, 2xCurrent sensor, 1xVoltage sensor, 1xBuzzer Need : 15 to 30 extra Dig In & Dig Out … for commanding & controlling emergency power’s circuits
I’m using a monochrome 128x64 graphic display and it uses 11 pins for the display (plus 1 for backlight).
If your project is anything like mine, you’ll run out of program space long before you run out of IO’s on the Panda. It is limited in ROM and RAM - so be careful of taking on too much with such a small device.
Display used = Display included : FEZ Touch, Part #: GHI-FTOUCH-262
"Plug and play in the 40 pin female header. The LCD uses many of the 40-pin female header. The unused pins are exposed on UEXT and EXT headers.".
Then there are few unused pins reported at the bottom of the display for external use… what is the PinOut please ?
For the memory :
The sub-systems equiped with Panda II need extra GIOs that are just transferrring Input (order) to Output (Commands) excepted in case of mains supply’s failure where all the Ouptut must be on at the same time (then few software for many hardware)
The master central system monitoring all the sub-systems (equiped with Panda II) will be equiped with Spider (still in box & not tested for the moment)
I/O 40 Extender GHI-IO40EXT-189 (Two JST cables are included).
"
Add 40 more digital IOs to your next project.
Need more I/Os? Then this extender is for you.
Using I2C, you can add 40 I/Os to your FEZ.
If that isn’t enough, you can also chain up to eight for a maximum of 320 I/Os!
"
It seems great & really what I need !
GHI : offers Drivers & Brochure, but no pricing ?
Can you Help me ?
Sorry to bother you, but I would like to realise that sensitive project with GHI. …
Hello again,
I’m using the display (27 I/O are then used) … and I need 15 to 30 extra I/O
Actually : 46 I/O are Used (Commands & Controls & LCD)
(6xIn + 7xOut + 2xAn Temperature + 2xAn Current + 1xAn Voltage, + 1xPWM Buzzer + 27 PIN Used for Touch Display), (I’m provisoirly using a Component Shield 3-pin E-Block instead of FEZ Connect Shield to gain I/O)
Left : 11 through LCD, (Communication ports not traited yet!)
Need : Minimum 8xIn & 8xOut // Max. 15xIn & 15xOut (for Load commutation). The solution would be I/O 40 Extender GHI-IO40EXT-189 : It would give me Max. 15xIn & 15xOut + 5xIn & 5xOut Extra IO !
Is I/O 40 Extender GHI-IO40EXT-189 avalaible & at which price ??? :o
Concerning GPIOs extension :
Is it possible to Use all the I/O of the FEZ MINI ?
I mean : Instead of using the SD card option using the reserved Pins as simple GPIOs …
In that case FEZ MINI should be a very nice Sub-System for my Panda_II by adding the laking GPIOs …
(Communication & Confirmation Using RS2332, RS485,SPI OR CAN).
I want to be sure that these Pins can be used as GPIOs before buying some…
Thanks for your fast reply I’m Really under stress !
Best regards
I’ve only bought 4 x Panda_1 + 1 kit ultimate + (1x Spider kit For the master).
I have not tested FEZ MINI yet… I wanted to be sure before,
I’ll buy now some FEZ MINI to test them (they are so small! and still competitive, Great Idea !)
I have caculated that (if the project works) 1 x FEZ PANDA_II + 1 x FEZ MINI for each SubSystem should represent only 30% !!! of the price of my actual developpments with PIC MCUs ! (with the 70% left, I will add some features to the power circuitry), but only if the project works…