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I run a long cable between the DS18B20 and WebControl, sensor does not work?

April 26, 2017cable run sensor webcontrol

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I run a long cable between the DS18B20 and WebControl, sensor does not work?

1 Answer

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3-4A: According to Maxim-IC, if using a long cable connecting between the sensor and host controller, it will require to add a pull-up resistor 4.7k from 1-wire bus (DQ pin on DS18B20) to the 5V supply near the far end of the 1-wire bus.