Vicente Jiménez has published a new build: Sometimes you need to check one circuit and test some of its nodes. Usually a tester in voltage mode is a good solution, but it has a pair of problems. First, it measures about zero both when the node is driven at zero volts and when the node […]
Tag Archives: probe
DIY active differential probe characterization
An 1GHz active differential probe project by Daniel Kramnik: This project was an ultra high input impedance (0.5pF||30MΩ or better) high bandwidth differential oscilloscope probe designed, built, and revised over the course of two weekends for the 2014 MakeMIT hardware hackathon. It can be built for about $30 in parts, plus the cost of etching or sending […]
Curious C-beeper
Electronics DIY published a new build, the Curious C-beeper: Curious C-Beeper is a fun to build little probe that can be used to quickly detect the capacity of capacitors in pF nF range, test their stability with temperature changes, find broken wires, locate wires, trace wires on PCBs, and to locate live wires behind the walls […]
MDO4104B-6 Intro, Probe calibration & license transfer
KF5OBS writes: Quick overview of the Tektronix MDO4104B-6. Also showing how to properly calibrate the passive probes and debunking the myth that license modules enable theft of options.
Measuring microamps & milliamps at 3 MHz bandwidth
Paul over at Dorkbotpdx writes: Recently I needed to actually “see” a current waveform in the 100 uA to 5 mA range with at least a couple MHz bandwidth. This extremely expensive probe would have been perfect, but instead I built something similar for about $30 using the amazing Analog Devices AD8428 amplifier.
Another Logic Sniffer ground mod
Here is a mod to add ground to unused Logic Sniffer probes, like the one built by Tarloth. He grounded the top row of a dual-row female header, and soldered the bottom row to his Open Bench Logic Sniffer. This allowed him to both improve signal integrity, and be able to mate his OBLS with […]
Logic Sniffer probes available next week
Openbench Logic Sniffer is an open source logic analyzer. It’s designed to support the SUMP logic analyzer software at the lowest possible cost. This project is a collaboration between the Gadget Factory and Dangerous Prototypes. We’ve got a long-awaited update on probe cables for the Open Logic Sniffer. Word from Seeed is that they should […]