If the PC gets the power by the socket, then PC should connects to the earth through the connection protected hole of the three core mains socket open hardware oscilloscope error to the safety regulations; If a laptop runs on battery power, then the land will be suspended. Welcome, Guest. A short summary of this paper. As a side bonus we also wired in a set of 10 digital channels that can be used as a simple logic analyzer. I think for a bit more money and most likely not that much time to invest, it's possible to build the analog frontend out open hardware oscilloscope error ICs. Labrador mounted to a breadboard.

The signal generator widget controls the standard parameters for up to 2 simultaneous waveform outputs. The maximum frequency is This is significantly lower than the 10MHz top end of the AD project, but sufficient for many common testing scenarios such as PWM, audio filter response, and op amp output. The generated 1 kHz sine wave looked smooth and steady:. The 2-channel logic analyzer lets you configure the serial connection properties and display hex value conversions for the signals it observes.

This was reflected as expected in the hex Open Hardware Oscilloscope Zambia view:. The Labrador captured the signal changes just fine, but no additional I2C signal information was displayed. The multimeter function is simple to use, Open Hardware Oscilloscope Using but the measurements appeared to be significantly off compared to several different digital multimeter, power supply, and known voltage measurements. Example results:. DMM showed 4. If you work primarily with low-voltage, low-frequency signals or want something you can easily throw in your laptop bag for some light-duty field work, the Labrador is a wonderful bargain.

It would also be useful for students and hobbyists looking for a low-cost way to diagnose and generate some signals. The included software is user-friendly, works on most of the major platforms, and provides the key functionality that most people will use. Will it take the place of an Analog Discovery2 or a dedicated bench scope?

The performance of both scopes are fairly similar, but the Labrador has a much more useful interface and many more features. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. Skip to content EspoTek Labrador multi-purpose board.

Labrador mounted to a breadboard. Must be mounted as shown or power rail polarity will be reversed. Signal Generator The signal generator widget controls the standard parameters for up to 2 simultaneous waveform outputs. The generated 1 kHz sine wave looked smooth and steady: 1 kHz sine wave generated by Labrador. Around 40 kHz, things start looking a bit ragged, but are still pretty usable: 40 kHz sine wave generated by Labrador.

Logic Analyzer The 2-channel logic analyzer lets you configure the serial connection properties and display hex value conversions for the signals it observes. This was reflected as expected in the hex view: Labrador serial logic analyzer. Oscilloscopes have tended to be on the bleeding edge, a lot of fancy tricks were incorporated to get them to perform as well as possible, just look inside some of the older Tek scopes. They're an engineering masterpiece. The following users thanked this post: tooki , ahbushnell.

Marco Super Contributor Posts: Country:. Quote from: garboui on Open Hardware Data Center Error January 31, , pm. The following users thanked this post: neris. The following users thanked this post: LariSan. Of course, if you actually want to build it, the parts are very expensive.

As a side bonus we also wired in a set of 10 digital channels that can be used as a simple logic analyzer. The following users thanked this post: analogo , neris. I'm sure there are places to get it cheaper, but not much in low quantities. NZ Siglent Distributor. Quote from: ataradov on February 01, , am.

The following users thanked this post: tooki. Quote from: tautech on February 07, , am. I've been using my Tek B for 17 trouble-free years now, it's actually quite a lot more dependable than some of the relatively cheap DSO's I've dealt with.

There are never firmware bugs or lockups with an analog CRO. Quote from: ataradov on February 07, , am. Cloud Regular Contributor Posts: Country:. What about this? Quote from: Cloud on February 18, , am. Wasn't there a brand of Scopes that looked like HP-Scopes from the late 90s that were kind of open source? I remember reading about the FPGA-Program and basically most of the firmware getting rewritten by hobby developers even before the manufacturer of the scopes went bankrupt and these scopes flooded ebay at suspiciously low prices They're gone now on ebay, which I guess happened for a reason.

It has been another one of those projects I have had on my to do list for a long time and no i'm not some delusional moron. Whilst you would need fast FPGAs to capture the data my thoughts where could you do something clever to interleave multiple channels in a slower device Although most peoples expectations these days seem to be it's either everything you ever wanted and more or it shouldn't exist because why should it take time to develop and improve I'm not an expert on oscilloscope design but I think the analog front end and the ADC is where most of the "magic" happens.

Once you have the data in digital form that's relatively easy to manipulate.

Kreg Joinery Projects Quiz Watco Stain Retailers Engineering Woodturning Bowl Sanders Australia Hardwood Products Company Stock Price 90