Board-dat/STH/STH1000-dat/STH1000-dat.md
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+
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+# STH1000-dat
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+
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+
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+
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+
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+## ref
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+
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+https://www.electrodragon.com/liquid-flow-sensor-turbine-meter-wiring-esp8266/
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Board-dat/STH/STH1049-dat/STH1049-dat.md
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+
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+# STH1049-dat
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+
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+https://www.electrodragon.com/product/water-drop-rain-sensor/
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+
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+
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+
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+
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+## usage
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+
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+Usage
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+- Connected to 5V power supply power lights,
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+ - When no water droplets, DO output is high and the switch indicator lights off,
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+ - dropping on a drop of water, DO output is low, the switch indicator lights on,
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+- Brush off the the above water droplets, has returned to output to high state.
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+- AO analog output can be connected to the MCU AD port to detect the size of the drops in the above rainfall.
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+- DO TTL digital outputs can also be connected to the MCU detects whether there is rain.
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+- 开关指示 = Switch Indicator
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+- 电源指示 = Power Indicator
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+
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+## change log
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+
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+- Version V1.1
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+- Change the power LDO, may have better stability, move the antenna connectors to the top to fit into case desgin.
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+- Version V1.2
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+- Add extra logic leveled UART pins 5V and 3v3 for arduino or raspberry pi such devices.
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+
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+
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+
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+## ref
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+- schematic refer to [[LM393-dat]]
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Chip-dat/TI/LM393-dat/LM393-dat.md
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+# LM393-dat
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+
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+## analog sensor input
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+
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+![](2024-03-21-16-18-43.png)
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+
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+
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+
Tech/Sensor-dat/liquid-sensor-dat/liquid-sensor-dat.md
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+
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+# liquid-sensor-dat
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+
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+- turbidity [[STH1074-dat]]
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+
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+- TDS sensor [[STH1078-dat]]
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+
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+- non-contact Liquid Level Sensor - [[SMO1095-dat]]
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+
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+- flow speed sensor - [[STH1000-dat]]
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+
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+- rain drop sensor - [[STH1049-dat]]
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+
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+## ref
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+
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+- [[sensor-dat]]
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Tech/Sensor-dat/sensor-dat.md
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- [[current-sensor-dat]]
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-- [[gas-sensor-dat]]
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+- [[gas-sensor-dat]] - [[liquid-sensor-dat]]
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## Sell
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Tech/Sensor-dat/water-sensor-dat/water-sensor-dat.md
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-
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-# water-sensor-dat
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-
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-- turbidity [[STH1074-dat]]
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-
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-- TDS sensor [[STH1078-dat]]
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