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Bok101 t1_iva99po wrote

Reply to comment by Hattix in How to bypass solar light's radar sensor to stay on indefinitely? by ThatFooFooLameShit

4.7 ohm is not a small resistor! Sounds like you are describing a pull up, if we assume 5 volt supply voltage, and you ground the signal, you will be pulling a bit more than 1 Amp through the pull up resistor, or about 5 watt. A fitting size would be so where between 1k and 10k if intended for a pull up.

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Hattix t1_ivacy5w wrote

You're replacing a fully turned on FET (which, you'll recall, has much less impedance than a few ohms!), you won't get that sort of current into the MCU's sense pin, it's a very high impedance.

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