GGHC Schematics
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Here are the latest versions of the schematics for the devices we plan to make as part of the GGHC: | Here are the latest versions of the schematics for the devices we plan to make as part of the GGHC: | ||
| − | [[File:StudentSchematic.png|600px|thumb|left|alt | + | [[File:StudentSchematic.png|600px|thumb|left|alt Student Schematic]] |
==The student unit:== | ==The student unit:== | ||
Some key features of the schematic: | Some key features of the schematic: | ||
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*(schematic needs to be revised with improvements / corrections from teacher unit design) | *(schematic needs to be revised with improvements / corrections from teacher unit design) | ||
| − | + | ||
| − | [[File:TeacherSchematic.png|600px|thumb|left|alt | + | |
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| + | [[File:TeacherSchematic.png|600px|thumb|left|alt Teacher Schematic]] | ||
==The teacher's unit:== | ==The teacher's unit:== | ||
Some key features of the schematic: | Some key features of the schematic: | ||
Revision as of 22:15, 14 April 2011
Here are the latest versions of the schematics for the devices we plan to make as part of the GGHC:
The student unit:
Some key features of the schematic:
- Uses internal RC oscillator for microcontroller
- 7-segment display anodes are driven by timer compare outputs for multiplexing without software
- (schematic needs to be revised with improvements / corrections from teacher unit design)
The teacher's unit:
Some key features of the schematic:
- Uses internal RC oscillator for microcontroller
- LEDs for answers are driven by input switches, not microcontroller (required to save output pins)
- LEDs for answers are optional: the switches can be used alone as inputs
- 7-segment display anodes are driven by timer compare outputs for multiplexing without software
