Mechanica Hardware – Printrboard pin overview
Printrboard pin overview
Informatie (ENG):
Hardware
The Printrboard electronic set was designed by members of the Printrbot team in order to eliminate the production and functionality shortcomings of older RepRap electronics sets. Printrboard improves upon the previous production-grade electronics set (Gen6) by adding heatbed and SD card support, reverting to 1/16 microstepping Allegro stepper drivers, and improving connectivity reliability and reducing cost by elimination of the FTDI UART chip. Printrboard also has expansion headers supporting I2C, SPI, UART, and ADC pins. All extra I/O ports of the AT90USB have been broken out to headers for prototyping and expansion.
Printrboard is a derivative of Teensylu, an AT90USB1286 development board originally based on Sanguinololu. The Atmel AT90USB1286 MCU has on-chip USB, removing the need for the FTDI UART (USB-to-serial) IC. On-chip USB means dramatically faster firmware upload times and communication. The AT90USB connects at any baud rate regardless of firmware configuration, and operates virtually free of serial communication errors/pauses.
Pin overview
Bron: labitat.dk
Physical I/O port mapping:
| pin name | internal configuration | physical pin | Arduino pin | fastio.h pin | analog pin | Printrboard rev. B,C,D&E | Printrboard rev. F |
|---|---|---|---|---|---|---|---|
| PA0 | AD0 | 51 | 28 | 0 | X-STEP | X-STEP | |
| PA1 | AD1 | 50 | 29 | 1 | X-DIR | X-DIR | |
| PA2 | AD2 | 49 | 30 | 2 | Y-STEP | Y-STEP | |
| PA3 | AD3 | 48 | 31 | 3 | Y-DIR | Y-DIR | |
| PA4 | AD4 | 47 | 32 | 4 | Z-STEP | Z-STEP | |
| PA5 | AD5 | 46 | 33 | 5 | Z-DIR | Z-DIR | |
| PA6 | AD6 | 45 | 34 | 6 | E-STEP | E-STEP | |
| PA7 | AD7 | 44 | 35 | 7 | E-DIR | E-DIR | |
| PB0 | SS/PCINT0 | 10 | 20 | 8 | Y-STOP | SD:CS | |
| PB1 | PCINT1/SCLK | 11 | 21 | 9 | ICSP:SCLK | ICSP:SCLK | |
| PB2 | PDI/PCINT2/MOSI | 12 | 22 | 10 | ICSP:MOSI | ICSP:MOSI | |
| PB3 | PDO/PCINT3/MISO | 13 | 23 | 11 | ICSP:MISO | ICSP:MISO | |
| PB4 | PCINT4/OC.2A | 14 | 24 | 12 | n/c(see note 1) | Y-STOP | |
| PB5 | PCINT5/OC.1A | 15 | 25 | 13 | n/c(see note 1) | EXP1:PB5 | |
| PB6 | PCINT6/OC.1B | 16 | 26 | 14 | SD:CS | EXP1:PB6 | |
| PB7 | PCINT7/OC.0A/OC.1C | 17 | 27 | 15 | SD:CD | SD:CD | |
| PC0 | A8 | 35 | 10 | 16 | EXP2:PC0 | EXP2:PC0 | |
| PC1 | A9 | 36 | 11 | 17 | EXP2:PC1 | EXP2:PC1 | |
| PC2 | A10 | 37 | 12 | 18 | EXP2:PC2 | EXP2:PC2 | |
| PC3 | A11/T.3 | 38 | 13 | 19 | E-ENABLE | E-ENABLE | |
| PC4 | A12/OC.3C | 39 | 14 | 20 | HOTBED | HOTBED | |
| PC5 | A13/OC.3B | 40 | 15 | 21 | HOTEND | HOTEND | |
| PC6 | A14/OC.3A | 41 | 16 | 22 | PWM-FAN | PWM-FAN | |
| PC7 | A15/IC.3/CLKO | 42 | 17 | 23 | Z-ENABLE | Z-ENABLE | |
| PD0 | OC0B/SCL/INT0 | 25 | 0 | 24 | EXP1:SCL | I2C:SCL | |
| PD1 | OC2B/SDA/INT1 | 26 | 1 | 25 | EXP1:SDA | I2C:SDA | |
| PD2 | RXD1/INT2 | 27 | 2 | 26 | EXP1:RX1 | EXP1:RX1 | |
| PD3 | TXD1/INT3 | 28 | 3 | 27 | EXP1:TX1 | EXP1:TX1 | |
| PD4 | ICP1 | 29 | 4 | 28 | EXP2:PD4 | EXP2:PD4 | |
| PD5 | XCK1 | 30 | 5 | 29 | EXP2:PD5 | EXP2:PD5 | |
| PD6 | T1 | 31 | 6 | 30 | EXP2:PD6 | EXP2:PD6 | |
| PD7 | T0 | 32 | 7 | 31 | EXP2:PD7 | EXP2:PD7 | |
| PE0 | WR | 33 | 8 | 32 | EXP2:PE0 | EXP2:PE0 | |
| PE1 | RD | 34 | 9 | 33 | EXP2:PE1 | EXP2:PE1 | |
| PE2 | ALE/HWB | 43 | 46 | 34 | Hardware boot jumper | Hardware boot jumper | |
| PE3 | IUID | 9 | 47 | 35 | X-STOP | X-STOP | |
| PE4 | INT4/TOSC1 | 18 | 36 | 36 | Z-STOP | Z-STOP | |
| PE5 | INT.5/TOSC2 | 19 | 37 | 37 | E-STOP | EXP1:PE5 | |
| PE6 | INT.6/AIN.0 | 1 | 18 | 38 | Y-ENABLE | Y-ENABLE | |
| PE7 | INT.7/AIN.1/UVcon | 2 | 19 | 39 | X-ENABLE | X-ENABLE | |
| PF0 | ADC0 | 61 | 38 | 40 | A0 | B-THERM | B-THERM |
| PF1 | ADC1 | 60 | 39 | 41 | A1 | E-THERM | E-THERM |
| PF2 | ADC2 | 59 | 40 | 42 | A2 | EXP1:A2 | EXP1:A2 |
| PF3 | ADC3 | 58 | 41 | 43 | A3 | EXP1:A3 | EXP1:A3 |
| PF4 | ADC4/TCK | 57 | 42 | 44 | A4 | EXP1:TCK | EXP1:TCK |
| PF5 | ADC5/TMS | 56 | 43 | 45 | A5 | EXP1:TMS | EXP1:TMS |
| PF6 | ADC6/TDO | 55 | 44 | 46 | A6 | EXP1:TDO | EXP1:TDO |
| PF7 | ADC7/TDI | 54 | 45 | 47 | A7 | EXP1:TDI | EXP1:TDI |
The fields marked with green background color indicates the values to be used with some versions of Marlin on a rev.E board
Note 1: In revisions A thru E the ports PB4 and PB5 marked n/c were not connected to anything though unused pins were in fact present on EXP2, this was changed in revision F. See Printrboard amendments where this topic has been previously discussed.
Expansion ports
The expansion ports viewed from above.
Orientation: GND and +5V pins points away from the AT90USB1286 and the 4P ATX.
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EXP2
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EXP1
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