MiniRambo development
RAMBo Pages: RAMBo .:. RAMBo v1.0-1.1 .:. RAMBo v1.2 .:. RAMBo Firmware .:. RAMBo Development .:. MiniRambo .:. MiniRambo Development
This page contains information relevant to the development of the Mini-Rambo PCB. You can find general info at MiniRambo.
Contents
Pins
The extension headers are in the format "Extension Name" "Pin Number" "Function". Example: MX1-5 Direction = "Motor Extension 1" "Pin 5".
| Pin Number | Pin Name | Arduino Pin Name | RAMBO Function |
| 1 | PG5 ( OC0B ) | Digital pin 4 (PWM) | Bed Heater |
| 2 | PE0 ( RXD0/PCINT8 ) | Digital pin 0 (PWM) (RX0) | USB – serial comms |
| 3 | PE1 ( TXD0 ) | Digital pin 1 (PWM) (TX0) | USB – serial comms |
| 4 | PE2 ( XCK0/AIN0 ) | RamboDigital pin 78 | |
| 5 | PE3 ( OC3A/AIN1 ) | Digital pin 5 (PWM) | |
| 6 | PE4 ( OC3B/INT4 ) | Digital pin 2 (PWM) | |
| 7 | PE5 ( OC3C/INT5 ) | Digital pin 3 (PWM) | Heat 0 |
| 8 | PE6 ( T3/INT6 ) | RamboDigital pin 79 | |
| 9 | PE7 ( CLKO/ICP3/INT7 ) | RamboDigital pin 80 | |
| 10 | VCC | VCC | VCC |
| 11 | GND | GND | GND |
| 12 | PH0 ( RXD2 ) | Digital pin 17 (PWM) (RX2) | P3 5 |
| 13 | PH1 ( TXD2 ) | Digital pin 16 (PWM) (TX2) | P3 3 |
| 14 | PH2 ( XCK2 ) | RamboDigital pin 84 | P1 1, P3 10 |
| 15 | PH3 ( OC4A ) | Digital pin 6 (PWM) | Fan 2 |
| 16 | PH4 ( OC4B ) | Digital pin 7 (PWM) | |
| 17 | PH5 ( OC4C ) | Digital pin 8 (PWM) | Fan 1 |
| 18 | PH6 ( OC2B ) | Digital pin 9 (PWM) | P1 2 |
| 19 | PB0 ( SS/PCINT0 ) | Digital pin 53 (PWM)(SPI-SS) | P2 4 |
| 20 | PB1 ( SCK/PCINT1 ) | Digital pin 52 (PWM)(SCK) | P2 2 |
| 21 | PB2 ( MOSI/PCINT2 ) | Digital pin 51 (PWM)(MOSI) | P2 6 |
| 22 | PB3 ( MISO/PCINT3 ) | Digital pin 50(MISO) | P2 1 |
| 23 | PB4 ( OC2A/PCINT4 ) | Digital pin 10 (PWM) | Z Min Endstop |
| 24 | PB5 ( OC1A/PCINT5 ) | Digital pin 11 (PWM) | Y Min Endstop |
| 25 | PB6 ( OC1B/PCINT6 ) | Digital pin 12 (PWM) | X Min Endstop |
| 26 | PB7 ( OC0A/OC1C/PCINT7 ) | Digital pin 13 (PWM) | LED |
| 27 | PH7 ( T4 ) | RamboDigital pin 85 | P1 7 |
| 28 | PG3 ( TOSC2 ) | RamboDigital pin 71 | P1 8 |
| 29 | PG4 ( TOSC1 ) | RamboDigital pin 70 | P1 6 |
| 30 | RESET | RESET | Reset |
| 31 | VCC | VCC | VCC |
| 32 | GND | GND | GND |
| 33 | XTAL2 | XTAL2 | XTAL2 |
| 34 | XTAL1 | XTAL1 | XTAL1 |
| 35 | PL0 ( ICP4 ) | Digital pin 49 | Y Direction |
| 36 | PL1 ( ICP5 ) | Digital pin 48 | X Direction |
| 37 | PL2 ( T5 ) | Digital pin 47 | Z Direction |
| 38 | PL3 ( OC5A ) | Digital pin 46 (PWM) | X+Y Ref PWM (motor current control) |
| 39 | PL4 ( OC5B ) | Digital pin 45 (PWM) | Z Ref PWM (motor current control) |
| 40 | PL5 ( OC5C ) | Digital pin 44 (PWM) | E Ref PWM (motor current control) |
| 41 | PL6 | Digital pin 43 | E0 Direction |
| 42 | PL7 | Digital pin 42 | |
| 43 | PD0 ( SCL/INT0 ) | Digital pin 21 (SCL) | P3 6 |
| 44 | PD1 ( SDA/INT1 ) | Digital pin 20 (SDA) | P3 8 |
| 45 | PD2 ( RXDI/INT2 ) | Digital pin 19 (RX1) | P1 5 |
| 46 | PD3 ( TXD1/INT3 ) | Digital pin 18 (TX1) | P1 3 |
| 47 | PD4 ( ICP1 ) | RamboDigital pin 81 | |
| 48 | PD5 ( XCK1 ) | RamboDigital pin 82 | P1 4 |
| 49 | PD6 ( T1 ) | RamboDigital pin 83 | |
| 50 | PD7 ( T0 ) | Digital pin 38 | |
| 51 | PG0 ( WR ) | Digital pin 41 | X Microstep2 |
| 52 | PG1 ( RD ) | Digital pin 40 | X Microstep1 |
| 53 | PC0 ( A8 ) | Digital pin 37 | X Step |
| 54 | PC1 ( A9 ) | Digital pin 36 | Y Step |
| 55 | PC2 ( A10 ) | Digital pin 35 | Z Step |
| 56 | PC3 ( A11 ) | Digital pin 34 | E0 Step |
| 57 | PC4 ( A12 ) | Digital pin 33 | |
| 58 | PC5 ( A13 ) | Digital pin 32 | P2 10 |
| 59 | PC6 ( A14 ) | Digital pin 31 | |
| 60 | PC7 ( A15 ) | Digital pin 30 | X Max |
| 61 | VCC | VCC | VCC |
| 62 | GND | GND | GND |
| 63 | PJ0 ( RXD3/PCINT9 ) | Digital pin 15 (RX3) | P2 7 |
| 64 | PJ1 ( TXD3/PCINT10 ) | Digital pin 14 (TX3) | P2 5 |
| 65 | PJ2 ( XCK3/PCINT11 ) | RamboDigital pin 72 | P2 3 |
| 66 | PJ3 ( PCINT12 ) | RamboDigital pin 73 | |
| 67 | PJ4 ( PCINT13 ) | RamboDigital pin 75 | |
| 68 | PJ5 ( PCINT14 ) | RamboDigital pin 76 | |
| 69 | PJ6 ( PCINT 15 ) | RamboDigital pin 77 | |
| 70 | PG2 ( ALE ) | Digital pin 39 | Y Microstep2 |
| 71 | PA7 ( AD7 ) | Digital pin 29 | X Enable |
| 72 | PA6 ( AD6 ) | Digital pin 28 | Y Enable |
| 73 | PA5 ( AD5 ) | Digital pin 27 | Z Enable |
| 74 | PA4 ( AD4 ) | Digital pin 26 | E0 Enable |
| 75 | PA3 ( AD3 ) | Digital pin 25 | |
| 76 | PA2 ( AD2 ) | Digital pin 24 | Y Max |
| 77 | PA1 ( AD1 ) | Digital pin 23 | Z Max |
| 78 | PA0 ( AD0 ) | Digital pin 22 | |
| 79 | PJ7 | RamboDigital pin 74 | |
| 80 | VCC | VCC | VCC |
| 81 | GND | GND | GND |
| 82 | PK7 ( ADC15/PCINT23 ) | Analog pin 15 | Y Microstep1 |
| 83 | PK6 ( ADC14/PCINT22 ) | Analog pin 14 | Z Microstep1 |
| 84 | PK5 ( ADC13/PCINT21 ) | Analog pin 13 | Z Microstep2 |
| 85 | PK4 ( ADC12/PCINT20 ) | Analog pin 12 | E0 Microstep2 |
| 86 | PK3 ( ADC11/PCINT19 ) | Analog pin 11 | E0 Microstep1 |
| 87 | PK2 ( ADC10/PCINT18 ) | Analog pin 10 | |
| 88 | PK1 ( ADC9/PCINT17 ) | Analog pin 9 | |
| 89 | PK0 ( ADC8/PCINT16 ) | Analog pin 8 | |
| 90 | PF7 ( ADC7/PCINT15 ) | Analog pin 7 | |
| 91 | PF6 ( ADC6/PCINT14 ) | Analog pin 6 | |
| 92 | PF5 ( ADC5/TMS ) | Analog pin 5 | |
| 93 | PF4 ( ADC4/TMK ) | Analog pin 4 | |
| 94 | PF3 ( ADC3 ) | Analog pin 3 | |
| 95 | PF2 ( ADC2 ) | Analog pin 2 | Thermistor 2 |
| 96 | PF1 ( ADC1 ) | Analog pin 1 | Thermistor 1 |
| 97 | PF0 ( ADC0 ) | Analog pin 0 | Thermistor 0 |
| 98 | AREF | Analog Reference | |
| 99 | GND | GND | GND |
| 100 | AVCC | VCC | VCC |
Source
Development is taking place on Github
Fuses and lockbits
32u2 fuses - BODLEVEL = 3V0; HWBE = [X]; DWEN = [ ]; RSTDISBL = [ ]; SPIEN = [X]; WDTON = [ ]; EESAVE = [ ]; BOOTSZ = 2048W_3800; BOOTRST = [ ]; CKDIV8 = [ ]; CKOUT = [ ]; SUT_CKSEL = EXTXOSC_8MHZ_XX_16KCK_4MS1
EXTENDED = 0xF4; HIGH = 0xD9; LOW = 0xEF
2560 Fuses BODLEVEL = 2V7; OCDEN = [ ]; JTAGEN = [ ]; SPIEN = [X]; WDTON = [ ]; EESAVE = [X]; BOOTSZ = 4096W_1F000; BOOTRST = [X]; CKDIV8 = [ ]; CKOUT = [ ]; SUT_CKSEL = EXTXOSC_8MHZ_XX_16KCK_65MS
EXTENDED = 0xFD; HIGH = 0xD0; LOW = 0xFF;
Lock bits for both only set BLB1 = LPM_SMP_DISABLE (0x0F).
Changelog
- 1.3a
- Moved the serial label next to Power Input plug on the top side of the PCB. Lots of minor adjustments to create extra space.
- Switched to UL listed fuse holders
- 1.2a
- Added two 2x5 pin headers for compatibility with RepRap Discount LCD standard cables
- Removed Miregli expansion IO connectors
- Silk screen fixes
- 1.1b
- Early release version
