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Simple and compact High Resolution voltmeter using STM32F103 (Blue Pill) and 7- seg LED module
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Stabile 18bit resolution with software programable LPF filter
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Only additional OPA192 (impedance converter) used, no external A/D, no LED drivers
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USART option for wired or wireless connection
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Used as workaround for damaged Fluke’s ASIC (Discrete Dual Slope A/D)
For LED wirig diagram chek ARTIC project: https://github.com/mikikg/artic
