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Forum Index : Microcontroller and PC projects : pic sandwich board
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| isochronic Guru  Joined: 21/01/2012 Location: AustraliaPosts: 689 |
I have a few of these spare if anyone wants one.  They are fairly generic, and lodge on an arduino uno and in turn hold a parallel LCD shield although the LCD shield is not necessary. The arduino supplies power and connects via a spi client (slave), drpending on what the ino specifies. The pic pins on the rhs have ICSP, digital and analog signals, I have used them for an extra bit-bang spi port, auxiliary serial port for GPS stream, two analog signals etc. A remote 4-wire spi connection works ok with care wrt noise/grounding etc. (ed) ie, the pic board itself can easily be separate instead, driving the lcd/uno client via a cable. schematic  Bill of Materials - Vitrino rev b Resistors R1-R5 6.8k 0805 R6-R11 4.3k 0805 R12 10R 0805 R13 10k 0805 R14 470R 0805 Capacitors C1-C3 0.1u 0805 ceramic C4 1.0u 0805 C5 470n 0805 C6 10u 1206 Low esr ceramic CX X 0805 optional filtering Hardware PCB Vitrino rev b switch pusbutton momentary make (switch) miniature slide SPST optional for autorun socket USB mini-B smd headers arduino stackable pin set ICs (IC1) pic32mx170b sdip (IC2) mcp2221a soic  |
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| isochronic Guru Joined: 21/01/2012 Location: AustraliaPosts: 689 |
(ed) there are more photos etc on the other thread The resistor group near the top are the connection to the 4 arduino pins (D13,12,11,10). It is designed to allow the pic spi hardware to connect as an option with links, alternatively it is very easy to put in a bit-banged spi routine in C that can can use any of the digital i/o pins. So one spi port can drive the uno/lcd and the other can access sensors etc via RB0 etc on the rhs. |
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| isochronic Guru Joined: 21/01/2012 Location: AustraliaPosts: 689 |
I have put this board here pcb etc as a shared project where it can be bought, the gerbers seen etc |
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