Category Archives: oscilloscope

Miniscope v2d: STM32 oscilloscope and arbitrary waveform generator

Tomeko has posted an article describing miniscope v2d integrated arbitrary waveform generator: Cheap low-speed dual channel PC/USB oscilloscope and arbitrary waveform generator with STM32F3 microcontroller. Miniscope v2d is based on STM32F303CBT6 microcontroller – LQFP48 device from STM32F3 family featuring: 32 kB RAM on data bus 8 kB RAM on instruction bus 128 kB FLASH memory USB […]

Simple circuit to turn your oscilloscope into a TDR

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. Most people think a TDR is more complicated than this. Your oscilloscope is used to […]

Homebrew highspeed lo-Z scope probe

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. In his article, he not only provides detailed insights into building your own high-speed oscilloscope probe but […]

Digital LED scope (7400 late entry)

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. The oscilloscope has a bandwidth of 1KiloHertz. Yet it can just show the signal applied […]

$5.00 simple oscilloscope using Picaxe and VB

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 fed into an ADC pin of a PICAXE 08M then serially transmitted to a Serial […]

Oscilloscope USB connection reversed

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. Andras writes: I managed to reverse engineer the USB connection of the Chinese digital storage […]

Sine waving into the New Year!

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 Design” book. Not slowly because it is boring, it is actually very interesting and a […]

Sparkfun has new oscilloscope

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 waveforms and menu are displayed over a 5.7″ LCD Screen. Via the forum.

SUMP logic analyzer with 2 scope channels

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 analyzer. Sample speed will be 1 Msps, with a depth of 6k samples (when using […]

Arduino oscilloscope uses ROS code

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 will set up a publisher which will forward the analog values from each of the […]

AVR XMEGA oscilloscope and signal generator

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 only 1 x 1.6 inches, and can be mounted directly on a breadboard. The Xprotolab […]

Maker Faire 2011: Dangerous DSO

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 and 1, which helps pinpoint noise and other electrical glitches.

Dangerous DSO part 5: Testing and conclusions

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 easier. Second, we’re going to try a more refined input range divider with a 900K […]

Dangerous DSO part 4: Over simulated

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 for how it works. Dangerous DSO is a new logic analyzer/oscilloscope design we’ve been using […]