Tech/Interface/RS485-DAT.md
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# RS485 DAT
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+
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+## interface
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+
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+- A
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+- B
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+
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+
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+
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## current limiter
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- 24v ~ 30ma, need ~ 800ohms current-limiting resistor
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-- 3.3V ~ 4mA
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+- 3.3V ~ 4mA
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+
Tech/Interface/USB-TTL-dat/USB-TTL-dat.md
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+
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+# USB TTL Dat
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+
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+- Green = TX
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+- White = Rx
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+- Red = VCC
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+- Black = GND
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+
Tech/Interface/interface-dat.md
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+
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+# interface dat
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+
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+- [[RS485-dat]] - [[RS232-dat]] - [[USB-TTL-dat]]
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