Ethernet Stepper Relay Controller
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We've selected the Atmel ATmega line, and specifically the AT90USB controller. We've got an Atmel demo board.
This usbfoo board (or bumble-b) seems much more suitable due to it's nicer 100 mil pads (the Atmel board uses 50 mil pads).
Possible I/O
- MAX4822/MAX4823 SPI relay driver
- MAX6950/MAX6951 SPI LED display driver
- ENC28J60 SPI ethernet controller
- SIP relay
- 6N138 optocoupler
- MID400 optocoupler AC
H-Bridge Driver
- Getriebemotoren Ansteuerung
- Discrete H bridge
- ST L298 Dual full-bridge driver
- ST L6203, snubber network app note
- MC33879 Configurable Octal Serial Switch with Open Load Detect Current Disable
- BTM 7810K
- TLE2006 half bridge
- BAT48 or BYV27-200 recovery diode
Software
- GCC in the avr-gcc cross compiler variant.
- dfu-programmer, to load the software on to the hardware via it's USB interface
- avrdude, to program the software in to the hardware
- simavr, a simulator with GDB support
- AVR libc, basic C library
- LUFA, USB library for AVRs
Links
- µC forum (German)
- big seven-segment display over SPI
- Quick AVR little AVR board perfect for putting on a breadboard