Adding a thermometer to your digital multimeter

Reading ambient temp is useful in electronics, and reading it from your handy multimeter is even better. Raj added a thermometer feature to his DMM, by hard-wiring it into the case. He used an LM35 analog temperature sensor and a slide switch connected to the multimeter inputs. You just flip the knob to the 200mV range and slide the switch to get the readout.

Via the forum.

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3 Comments

  1. Caution! Altering the circuits inside the meter will
    make it UNSAFE for measurements on powerlines!
    Dangerous advice!

  2. I have put an RF detector in one before which was cool. I agree though no heavy duty testing, I only used mine for simple DC stuff (glorified battery checker).

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