Week 6 > Electronic Design

group assignment: • use the test equipment in your lab to observe the operation of an embedded microcontroller

Multimeter

I learned how to use a multimeter, which is one of the most important tools in electronics. A multimeter is used to measure voltage, current, resistance, and to test continuity in a circuit. and are dived into sections

Below are the main functions I learned and what they are used for:

DC (Direct Current Voltage)

This is useful when:

Checking battery voltage

Measuring the output voltage of a regulator

Confirming if a microcontroller is receiving 3.3V or 5V

Testing polarity of power lines (to ensure VCC and GND are correct)

AC (Alternating Current Voltage)

Used to measure AC voltage. This is useful when:

Measuring wall power (if applicable)

Checking AC signals in certain circuits

BAT (Battery Test / Battery Voltage Mode)

Used to test battery condition. It helps determine:

If a battery is still good

If the voltage is too low to power a circuit properly

Ohms (Ω)

Used to measure resistance. This is useful for:

Checking resistor values

Testing if a wire is broken

Verifying if two points are electrically connected

Checking for short circuits

Continuity Mode (Beep Mode)

Although not always labeled separately, this mode is very important. It is used to:

Test wires

Check PCB traces

Confirm correct connections

Detect short circuits

If the multimeter beeps, it means there is a connection.

COM (Common – Black Probe)

The COM port is where the black probe is connected. It is usually connected to:

Ground (GND)

The reference point of the circuit

The red probe is moved depending on what you want to measure (voltage, resistance, etc.).!