Features:
Logic:
1. For Arduino MEGA compatible for Atmega2560 and Atmega32u2 processors are compatible with all RAMPS class firmware.
2. Crystals for both USB and MCU (timing accurate to 10ppm).
3. 4 Thermistor jacks.
4. All extra pins broken out on both processors (allows using the 32u2 for LUFA AVR programmer, etc.).
5. 2 channel SDRAMPS compatible SPI breakout.
Motor Drivers:
1. 5 A4982 1/16th microstep motor drivers (A4984 1/8th prior to v1.1) (2 connectors on Z for Prusa Mendel and other dual Z printer designs).
2. Digital Trimpot for stepper current control.
3. Current limit on driver IC VCC to prevent permanent latchup.
4. Microstep mode configured by MCU through firmware (no jumpers needed).
5. Test points for driver control signals.
6. Step and Direction pins are on their own ports for synchronous movement.
Capability:
1. Extra driver ports broke out for up to 3 additional drivers (some of the motor extension pins are shared with max endstop and a pin allocated for SPI-SS extensions).
2. PWM DC outputs (Extruders, Fans, Etc.).
6 outputs:
Low resistance mosfets for cool running.
Indicator led for each channel.
Power:
1. Three independent power rails for flexible input power configurations.
2. Heated Bed, 15A 12-24V (version earlier than 1.1 limted to 14A 16V due to fuse rating, see rambo_development for hacks).
3. Extruders and fans, 5A 12-24V (fuse can be exchanged for up to 10A capacity) 10V-26V input voltage.
4. Motors, 5A 12-24V (fuse can be exchanged for up to 10A capacity) 10V-26V input voltage.
5. Built in SMPS for 5V generation.
PCB:
1. 4 layer.
2. oz copper on all layers.
3. High quality, High temperature FR4-TG130 PCB
Gold ENIG finishing.
Documentation:
The RAMBo user manual can be downloaded here.
Powering RAMBo:
1. Different versions of RAMBo require different power rails connected to power the logic. Please see the page for your board:
2. See RAMBo v1.1 for information applicable to version 1.0 through 1.1.
3. See RAMBo v1.2 for information applicable to version 1.2.
USB Driver:
1. Windows requires a driver to communicate with RAMBo. Download this file File: RAMBo USBdriver.zip and unzip it into a known location on your computer.
2. In windows 7, plug in your RAMBo board, and let windows fail to find the driver.
3. Then, go to the start menu, right click on computer and click properties.
4. On the left, click on Device Manager. Scroll down to Unknown Devices, and right click on RAMBo.
5. Choose Update driver. Click on "Browse my computer for driver software", then click on "Let me pick from a list of device drivers on my computer", then click the button for "Have Disk" and then click browse and point it to the file you downloaded above.
6. Linux and Mac use the built in CDC driver. RAMBo should show as a option in your 3D printer control interface.
Specification:
Size: 105*70*25mm/4.13*2.75*0.98''
Note:
Please allow 1-3mm differs due to manual measurement.
Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding.
1 x USB Cable
4 x Heat Sinks
2 x Terminals
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12 months Warranty. Buy with confidence!
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We apologize for the late reply during the holidays.