I have a scope (DHO804), I want to get a probe.
Something clamp on, as little as possible, I guess? But how can I get current-voltage aligned?
Or some tiny little wire-in->wire-out module for prototyping?
I am looking something like this:
https://neurochrome.com/pages/measure-current-with-an-oscilloscopeI doubt I need to reinvent the wheel. It should be somewhere out there for affordable price already.
jpanhalt, links you sent are very interesting, will dig it deeper after work!
what kind of currents are you measuring?
For example, are you measuring the current of a USB device? Or are you measuring the current of an Arduino peripheral module? Or are you measuring the current of a car starter motor?
Usually usb/arduino level currents. 1A - 10V would be a sweet spot.
Anything smaller usually is circuit board and clamp-on is not an option.
I may want to have bigger one for RC toys (10-50A?) but thats optional.
Design the current measurement into your circuit with an oscilloscope friendly output.
usually it is not my circuit board. I am fixing/debugging something or I just use ESP boards for my humble simple tools.
measure the voltage across a know low value resistor
this involves some math, also it will set common ground to point of resistor and will block other scope channels, right?