When you cannot get an oscilloscope probe into a tight spot, can you just use a piece of wire? Sometimes. When signal integrity matters, you CAN use a low-cost DIY solder-in probe. These probes attenuate the signal and use an oscilloscope’s high-bandwidth 50-ohm input. James shows how to build some solder-in probes when they work and when they do not work in this video. Special thanks to Shabaz on the element14 community for the guide used here.
Supplemental Content:
- Building Solderable In-Circuit Oscilloscope Probes by shabaz
- DIY $10 Solder-in Oscilloscope Probe by Jan Cumps
Bill of Material:
| Product Name | Manufacturer | Quantity | Buy Kit |
|---|---|---|---|
| RF / Coaxial Cable Assembly, SMA Plug to SMA Plug, RG174, 50 ohm, 3.3 ft, 1 m, Black | MULTICOMP PRO | 1 | Buy Now |
| SMD Chip Resistor, 953 ohm, ± 1%, 125 mW, 0805 [2012 Metric], Thick Film, Precision | PANASONIC | 1 | Buy Now |
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