BeBoPr++

Descriptions

The BeBoPr-plus-plus is the 3rd generation BeBoPr cape. It is the successor of the BeBoPr-plus cape and the original BeBoPr Cape. The BeBoPr++ Cape provides all the necessary I/O to control a Mendel/Reprap 3D-printer, or other (multiple axes) stepper driven devices:

• 3 Analog inputs optimized for thermistors.
• 6 Digital inputs for limit switches.
• 3 High-power PWM outputs for heater(s) and/or fan.
• Multiple axes steppermotor interface, 5 axes with external drivers or 4 axes with plug-in Pololu/StepStick modules.
• Single supply (12-24 Volt) operation. The integrated 5V/2A switching stepdown convertor powers the Cape, the BeagleBone, and external sensors.
• All I/O is protected to prevent damage to the BeagleBone by accidental short-circuits or wrong logic levels.
• Steppermotor operation at up to 36 Volts, depending on the drivers being used.
• Multiple LEDs, mounted near the input and output connectors provide status information.

All 'hard' realtime control, e.g. step pulse generation, acceleration etc. runs on a dedicated PRU coprocessor that is part of the AM335x on the BeagleBone. The 'soft' realtime control, e.g. traject planning, temperature control etc., runs on the ARM processor under Linux.

• The stepper control code accelerates and steps all axes simultaneously at up to 60 kHz steprate.
• The step-pulse duration on the E-axis can be controlled for laser engraving/cutter applications.

All Linux code is Open Source. A license for the coprocessor code comes with the board, the code is provided as embedded binary module.

Specifications

Electrical Specifications

Power	Single 12-24 Volt operation with stepdown for BeagleBone and sensors.
	5V/2A sourced via expansion header
Indicators	2 green LEDs show power present state
	7 yellow LEDs show active sensors and software status (or heartbeat)
	5 red LEDs show active PWM outputs, emergency stop and I/O enabled state
Connectors	Pluggable power connectors
	Screw terminals for PWM outputs
	Molex KK pin headers for I/O
	Elevated headers for the BeagleBone
	Sockets for stepper driver modules
	Pin Header for external stepper drivers

Mechanical Specifications

Size	100 x 107 mm
Layers	2
PCB Thickness	normal
RoHS Compliant	Yes

EEPROM

EEPROM Suport	Yes
Board Name	BeBoPr (3D-printer/CNC) Cape
Version	R2
Manufacturer	www.bebopr.info
Part Number	cape-bebopr-brdg
Pins Used	29

Documentations

Open Source	Partial
System Reference Manual	Yes
Schematics	No
PCB Files	No
Gerber Files	No
Bills of Materials	No

Manufacturer's Link

For more information please send mail with subject "BeBoPr++ sales" to bebopr@aeselectronics.nl or follow one of these links:

software

BeBoPr wiki

documentation

forum

To go back to the cape list, please click BeagleBone Capes