Expansion I/O board for RaspberryPI
- PIC24FJ64GB004 microcontroller
- DIN13 round connector for car stereo connection/power
- Connector for LCD with HD44780 controller
- Rotary encoder
- Stereo audio amplifier
- 5.5mm power connector
- On/Off switch
- 800mA LDO or external SMPS module for 3 or 5A
- USB hub with 5 ports on PCB and 2 header connectors (same pinout as motherboards)
- rPi Expansion headers
- 3x I2C header connector
- SPI connector with two CS signals
- RS232 connector
| Designator | Footprint | Value | Quantity | Comment |
|---|---|---|---|---|
| C1, C4, C7, C8, C9, C12, C14, C18, C19, C20, C21 | C0805 | 0.1uF | 11 | |
| C2, C3, C16, C17 | C0805 | 0.39uF | 4 | |
| C5 | CAPR5-4X5 | 4.7uF | 1 | |
| C6 | CAPR5-4X5 | 10uF | 1 | |
| C10, C13 | CAPR5-4X5 | 470uF | 2 | |
| C11 | CAPPR5-5x11 | 470uF | 1 | |
| C15 | CAPR5-4X5 | 4.7uF | 1 | |
| C22, C23, C24, C25 | C0805 | 18pF | 4 | |
| D1 | SOT-23B_N | BAT754S | 1 | |
| DIN13 | DIN13 | 1 | DIN13 connector for car stereo | |
| I2C | HDR3X4 | 3x4 Header | 3 | I2C from rPi |
| LEDs | HD23X4 | 2x4 Header | 3 | four LED connected to PIC |
| JP1, JP2, JP3 | 6-0805_N | 0E | 5 | Select power for I2C connector |
| JP4, JP5 | 6-0805_N | 0E | 5 | |
| LCD/IO | HDR1X16 | 1 | ||
| P1 | POT4MM-2 | 4k7 | 1 | |
| P2 | POT4MM-2 | 4k7 | 1 | |
| POWER1 | LUMBERG_1613-14 | 1 | ||
| POWER2 | NAP2 | 1 | ||
| Q1, Q2 | 318-08 | BC817 | 2 | |
| R1, R2 | 6-0805_N | 2.7E | 2 | |
| R3, R8, R11 | 6-0805_N | 10k | 3 | |
| R4 | 6-0805_N | 0E | 1 | |
| R5, R16, R21, R22, R23, R24 | 6-0805_N | 1k | 6 | |
| R6, R9 | 6-0805_N | 680E | 2 | |
| R7, R10 | 6-0805_N | 100k | 2 | |
| R12, R13, R14, R15 | 6-0805_N | 470E | 4 | |
| R17 | 6-0805_N | 2k7 | 1 | |
| R18 | 6-0805_N | 1k5 | 1 | |
| R19 | 6-0805_N | 47k | 1 | |
| R20 | 6-0805_N | 330E | 1 | |
| R25, R26 | 6-0805_N | 18G | 2 | May not be needed |
| Rotary | EC11 (ALPS) | 1 | Rotary encoder | |
| rPi | HDR2x13 | 2x13 Header | 1 | Raspberry Pi connection |
| RST, USB_IN | HDR1X2 | 1x2 Header | 2 | microcontroller reset & USB In |
| SND1 | HDR1X3 | 1x3 Header | 1 | Audio In |
| SPI1 | HDR2X5 | 2x5 Header | 1 | SPI & RS232 signals |
| SW1 | Stikalo_dvojno_200x200 | Switch | 1 | On/Off switch |
| U1 | TS9A_N | LM4952TS | 1 | |
| U2 | ZZ311 | LM1117-3.3 | 1 | |
| U3 | T03B | LM1117-5.0 | 1 | |
| U4, U5 | SSOP-28_N | GL850S | 2 | SSOP28 version |
| U6 | TQFP-PT44_L | PIC24FJ64GB004 | 1 | microcontroller |
| USB0, USB1, USB2 | 440260 | 3 | Vertical USB ports | |
| USB3, USB4 | 787616 | 2 | Horizontal USB ports | |
| USBH | USB_HEADER | 1 | USB input | |
| USB_HUB | 440247 | 1 | 5th and 6th USB ports, pinout same as motherbaords | |
| X1, X2 | RESC6332 | 12MHz | 2 |
| Jumper | I2C Voltage |
|---|---|
| JP1 | 5V |
| JP2 | 3.3V (rPi) |
| JP3 | 3.3V |
| For 5V supply note that SDA and SCL signals can only be 3.3V or you will fry the rPi!!! |
JP4 and JP5 are there to connect PIC to rPI via USB hub if needed.