2017-12-23 12:48:48 +01:00
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v0.018
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second prototype
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major fixes:
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- add bus switch instead of common power rail for pull-up resistors
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- replace MAX232 RS-232 transceiver with 3.3V capable and enable pin alternative
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- add diodes on xV voltage regulator output to prevent voltage regulator to sink current
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- add transistor to disable completely 12V voltages regulator, allowing it to got to 0V instead of 5V)
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v0.001
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first prototype
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