Simple circuit to turn your oscilloscope into a TDR: This simple circuit allows you to use your oscilloscope as a Time Domain Reflectometer (TDR). This is how it works. Send a pulse down a cable and watch for the reflection. … Read more
Paulo Oliveira was experimenting with probing high speed signals with his oscilloscope. You might think that a 500 MHz probe would be adequate to probe a 125 MHz clock signal, but he demonstrates why this is not the case. He … Read more
Tim Kerby notes that there is now a Wiki for the Analog Discovery with lots of fantastic training materials. Check it out! Via the contact form.
Sebastian, amateur radio operator KF5OBS, recently had the opportunity to acquire a Teledyne LeCroy WaveAce 1002 Digital Storage Oscilloscope. Visit his website for his analysis, screenshots and conclusions. Via the contact form.
Check out Umair’s Digital oscilloscope, it was intended as an entry for the open 7400 Logic Competition. Unfortunately, it was entered late, and won’t be competing in the competition. We’re sorry for them, as this seems like an awesome effort. … Read more
Patrick Cambria posts this simple oscilloscope project using a Picaxe-08M microcontroller and a potentiometer. The Picaxe is programmed in BASIC and the entire MCU program follows: main: READADC10 1,B0 SERTXD(#B0,10) goto main The output from a potentiometer voltage divider is … Read more
András Veres-Szentkirályi is part of the H.A.C.K. hackerspace in Hungary. They acquired an affordable, slightly used UNI-T UT2025B digital storage oscilloscope. He wondered what useful information could be gained from sniffing the USB port using Wireshark on a Linux box. … Read more
David from Nut&Bolt has written a short overview of affordable oscilloscopes (sub 400 euro) on his website. Via the contact form.
Csaba Bleuer writes:”I bought a Siglent SDS1102CM oscilloscope, and since there are no reviews about it on the net I have written one.” Check out Csaba’s well illustrated review on his website. Via the contact form.
A RC Wien Bridge oscillator outputs a pure sine wave. The frequency depends on the resistor-capacitor combination in the oscillator. Embedded Eric built one using instructions from “Analog Circuit Design“: I have been slowly reading through Jim Williams “Analog Circuit … Read more
Sqkybeaver let us know Sparkfun now carries a scope similar to the one he reviewed. It is a two channel 100MHz digital scope with 500MSa/s real-time sampling rate. Saving waveforms to a USB flash drive is available, as well as interfacing with the computer over the USB port. The … Read more
Pong on an oscilloscope. Check out Kevin’s epic original project over at Hack a Day: Want to play Pong on your Oscilloscope? I always have! …The code is a nice mixture of ArduincoreGCCish (I am sorry, still learning), and includes … Read more
hlipka made a logic analyzer with 2 oscilloscope channels that uses a Cypress PSoC chip. It works with SUMP clients like Open Logic Sniffer. Goal of this project is to develop a combination of 2-channel oscilloscope with a 32-channel logic … Read more
Ros.org presents this project tutorial demonstrating that a simple oscilloscope can be implemented using the Arduino. They write: In this tutorial, we will be making a poor man’s oscilloscope using the Arduino’s ADC (analog to digital converter) and rxplot. We … Read more
Squonk has some useful links if you want to build your own scope: A nice HDL example of an oscilloscope using a FIFO and trigger A 100 MHz input stage A firmware development/improvement for the DSO “Welec 2000a- series” The … Read more
bearmos found a multifunction MSO: …it appear to be an MSO, with an OLED display, in a DIP package, for $35 The Xprotolab is the first mixed signal oscilloscope with an arbitrary waveform generator in a DIP module. It measures … Read more
Dangerous DSO is a new logic analyzer/oscilloscope prototype we’ve been using in the lab. It combines a 16 channel logic analyzer with one 50MHz oscilloscope channel with +/-10volt DC range. The combined tool shows what your signal does between 0 … Read more
It’s the last day of our week-long Dangerous DSO adventure. Yesterday we simulated the analog front-end and found a few changes to test. First, we’re going to increase the ADC buffer gain to 2. That should make vertical offset adjustment … Read more
Yesterday we covered the Dangerous DSO analog front end. This circuit divides our +/-10volt input to +/-0.5volts, and re-centers it between the 2volt and 3volt range the ADC can measure. Today we’ll simulate the circuit to get a better feel … Read more
Yesterday we looked at how the Dangerous DSO analog to digital converter works, and it turns out to be a pain in the butt. It only measures a 1volt (1Vp-p) range between 2volts and 3volts. That’s not a very useful … Read more
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