OpenServo Hardware
The OpenServo hardware is documented in the links below.
OpenServo 3.0 Information
This is the latest version of the OpenServo hardware based on the AVR ATmega168 MCUs. This MCU has 16K of Flash allowing more features to be implemented. This version of the OpenServo also uses independent bridge control and back EMF sensing
Schematic: OpenServo 3.0 schematic diagram
Printed Circuit: OpenServo 3.0 printed circuit diagram
Parts List: OpenServo 3.0 parts list
Parts Placement: OpenServo 3.0 parts placement
Datasheets: relevant datasheets
OpenServo 2.1 Information
This is the stable version of the OpenServo hardware based on the AVR ATmega8 and AVR ATmega168 MCUs. These MCUs have 8K and 16K of Flash respectively allowing more features to be implemented. This version of the OpenServo also uses International Rectifier IRF7309 MOSFET (or equivalent) for greater current capacity.
Schematic: OpenServo 2.1 schematic diagram
Printed Circuit: OpenServo 2.1 printed circuit diagram
Parts List: OpenServo 2.1 parts list
Parts Placement: OpenServo 2.1 parts placement
Datasheets: relevant datasheets
OpenServo 1.1 Information
OpenServo 1.1 is based on the AVR ATtiny45 MCU with 4K of Flash. Unfortunately, the AVR ATtiny85 MCU with 8K of Flash has not yet been released by Atmel. Because of the limited Flash memory the ATtiny45 version of the OpenServo is considered to be obsolete. This design may be resurrected if and when Atmel finally releases the ATtiny85.
edit: The ATtiny85 has been officially released, and is available through Digikey. Updates to v1.1 are being made at this time and will be hosted here shortly.
Development Tools: tools used to develop OpenServo hardware
Schematic: OpenServo 1.1 schematic diagram
Printed Circuit: OpenServo 1.1 printed circuit diagram
Parts List: OpenServo 1.1 parts list
Parts Placement: OpenServo 1.1 parts placement
Datasheets: relevant datasheets
Testing: hardware and tools related to testing
Assembly Notes: notes relating to assembly
Servo Hardware Information
Servo Hardware: photos and information on servo hardware
see also
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