DIY Low Ohm Resistor For Current Measurement  #electronics #diy #measurement
Channel: More Than Electronics
Date: 2024-02-02

Making a 0.1 ohm resistor for an upcoming project where I will take short term amperage measurements of up to 20 amps.  The 0.1 ohm resistor is placed in the circuit so that the power goes through it and the voltage developed across it is measured. Every 0.1 volt across the resistor equates to 1 amp of current through it.  
The first resistor is made using nichrome wire which can be recovered from toasters, space heaters, kettles, clothes dryers, etc. 
I also show a 0.1 ohm resistor made using the steel from a 'twist-tie'.


0:00 Introduction
0:30 Ohm's Law Calculation
1:26 Current Adjust
1:51 Probe For Voltage
2:52 New Resistor Tested
3:41 'Twist-tie' Wire As Resistor