GitHub - Alfons3/Generation_7_Electronics: This is part of the RepRap project, see http://www.reprap.org. Gen7 is the next generation of electronics meant to drive a RepRap machine. Focus on this generation is to allow for better replicatability while not standing back behind industry products.

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This is part of the RepRap project, see http://www.reprap.org. Gen7 is the next generation of electronics meant to drive a RepRap machine. Focus on this generation is to allow for better replicatability while not standing back behind industry products.

reprap.org/wiki/generation_7_electronics

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Name		Name	Last commit message	Last commit date
Latest commit History 250 Commits
arduino support		arduino support
data sheets		data sheets
packages		packages
private		private
release documents		release documents
tools		tools
.gitignore		.gitignore
About Quality.txt		About Quality.txt
ExtensionBoard.gsch2pcb		ExtensionBoard.gsch2pcb
ExtensionBoard.pcb		ExtensionBoard.pcb
ExtensionBoard.sch		ExtensionBoard.sch
Gen7Board.gsch2pcb		Gen7Board.gsch2pcb
Gen7Board.pcb		Gen7Board.pcb
Gen7Board.sch		Gen7Board.sch
OptoEndstop.gsch2pcb		OptoEndstop.gsch2pcb
OptoEndstop.pcb		OptoEndstop.pcb
OptoEndstop.sch		OptoEndstop.sch
README		README
gafrc		gafrc
gh		gh

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This Version of the Gen7 Electronics uses an extension board to add SD-card support

I stopped working on this project !
Please use the current version from Traumflug.

Status:

 * Printing works normal.(at least with my board)
 * communication with sd-card is unstable, printing from sd-card is not possible
   (maybe because the level conversation with resistors produce to many communication errors)

Design Goals:

 * PCB easily to manufacture on a RepRap.
 * All parts on one board. Except for the Opto Endstops, of course.
 * Enough components to run a Mendel or Huxley with extruder and heated bed.
 * Easy to set up. For example, this would include an USB port.
 * Well available and cheap parts.
 * Based on the ATmega644.
 * Well suited for community driven development. 

Features:

 * Single board solution.
 * Single sided PCB.
 * Pololu stepper drivers, exchangeable. // may change to bigger through hole stepper drivers from Toshiba to reduce cost and improve heat management
 * 4x stepper motor drivers with 1/16 microstepping.
 * printing from microSD-Card
 * TODO: on-board USB-RS232 converter.
 * Integrated hardware for driving one extruder (stepper, heater and thermistor).
 * Integrated hardware for a heated bed (heater, thermistor).
 * Ready to be hooked up on a generic PC power supply unit (PSU).
 * Use of standard connectors.
 * Debug LEDs for power and both heater outputs.
 * Can turn PSU on and off in software.
 * Reset button. 

###################################################################################

						          ATMega644P

                                  +---\/---+
x_min                 (D 0) PB0  1|        |40  PA0 (AI 0 / D31)   temp-1
y_min                 (D 1) PB1  2|        |39  PA1 (AI 1 / D30)   temp-2
z_min            INT2 (D 2) PB2  3|        |38  PA2 (AI 2 / D29)   step-1
heater-2          PWM (D 3) PB3  4|        |37  PA3 (AI 3 / D28)   dir-1
heater-1          PWM (D 4) PB4  5|        |36  PA4 (AI 4 / D27)   enable-1
                 MOSI (D 5) PB5  6|        |35  PA5 (AI 5 / D26)   step-2
                 MISO (D 6) PB6  7|        |34  PA6 (AI 6 / D25)   dir-2
                  SCK (D 7) PB7  8|        |33  PA7 (AI 7 / D24)   enable-234
                            RST  9|        |32  AREF
                            VCC 10|        |31  GND 
                            GND 11|        |30  AVCC
                          XTAL2 12|        |29  PC7 (D 23)         step-3
                          XTAL1 13|        |28  PC6 (D 22)         dir-3
                 RX0 (D 8)  PD0 14|        |27  PC5 (D 21) TDI     step-4
                 TX0 (D 9)  PD1 15|        |26  PC4 (D 20) TDO     dir-4
SD-enable   INT0 RX1 (D 10) PD2 16|        |25  PC3 (D 19) TMS
            INT1 TX1 (D 11) PD3 17|        |24  PC2 (D 18) TCK
                 PWM (D 12) PD4 18|        |23  PC1 (D 17) SDA
                 PWM (D 13) PD5 19|        |22  PC0 (D 16) SCL
                 PWM (D 14) PD6 20|        |21  PD7 (D 15) PWM     PS on/off
                                  +--------+

###################################################################################


For more details, see http://reprap.org/wiki/Generation_7_Electronics