DC non invasive current clamp for oscilloscope DIY

Scheamtic for the DC current clamp

What do you need?

1 x Ferrite core LINK
1 x Hall sensor LINK
1 x Metal clamp LINK
1 x Switch LINK
1 x 1k, 100k, 9M resistors LINK
1 x 10pF capacitor >LINK
1 x BNC connector >LINK
1 x LM234 OPAMP LINK
1 x 10k Potentiometer LINK
1 x 1 LED LINK
9V battery LINK
battery connector LINK
Wire LINK
3D printed case DOWNLOAD LINK