Search  for anything...
DORHEA

DSO 138 Oscilloscope Kit Open Source with Probe 2.4" TFT 1Msps Digital Oscilloscope Kit with DSO 138 Case + Probe 13803K for Electronic Learning Set

    • Based on 235 reviews
Condition: New
Checking for product changes
$28.99 Why this price?

Buy Now, Pay Later

As low as $7 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: 20 left in stock
Fulfilled by Amazon
Arrives Monday, May 6
Order within 7 hours and 55 minutes
Available payment plans shown during checkout

Features

  • This kit uses ARM Cortex-M3 processor (STM32F103C8), and includes a 2.4-inch color TFT display screen, can be used as ARM test development board.Can freeze at any time waveform display (HOLD function).Comes 1Hz /3.3V square wave test signal source.
  • With automatic, regular and one-shot modes, easy to capture the moment waveform.Available rising or falling edge trigger.Observable previous trigger waveform (negative delay).
  • With waveform parameter digital display, including frequency, period, pulse width, duty ratio, MAX./MIN./AVG./Peak-Peak/virtual values.Waveform storage function: will not lose the waveform after power off.
  • Partially open-sourced,the MCU has been programmed.The oscilloscope circuit boards components are pre-soldered, no need soldered by yourself.The case is unassembled and requires assembly.
  • Adjustable vertical displacement,and with instructions,which increase the likelihood of adding different features or developing new applications on the hardware for users.

Package Dimensions ‏ : ‎ 7 x 6.9 x 1.9 inches; 10.41 Ounces


Date First Available ‏ : ‎ May 30, 2019


Manufacturer ‏ : ‎ DORHEA


Best Sellers Rank: #75,202 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #42 in Lab Oscilloscopes


#42 in Lab Oscilloscopes:


Customer Reviews: 3.8 3.8 out of 5 stars 235 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, May 6

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Klarna Pay in 4
  • PayTomorrow Financing
  • Apple Pay Later
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Probably not for the impatient or easily frustrated...
Review Image by Michael Speciale, Jr. Michael Speciale, Jr.
Review Image by Michael Speciale, Jr. Michael Speciale, Jr.
Great product for the price. I've read quite a few of these reviews and would like to clear a few things up. If you use a wall wart (i.e. a 9V AC-to-DC power adapter), please ensure it is capable of delivering enough amperage before rushing to push an extra 3V through the scope. Since it works on a 9V battery (which is really 6 AAAA cells in series inside that rectangular case), the scope can't be using more than about 1.2 amps at most anyway, so I wouldn't recommend trying to use a 400mA 9V wall adapter. I've an old 2A 9V from something that broke many moons ago and it works just fine with this scope. Also, there's no need at all to rummage through your collection of washers and nuts to assemble this kit -- if you've need for such, you're simply not assembling it properly. They've engineered it so that you'll need to place a nut to secure the 4 acrylic sheets, then two (top/bottom) to secure the system board, then the final to secure the case (see the pic I took of a corner bolt). All bolts/nuts are already included. No need for washers or locknuts. Oh, and some have complained about not being able to access the pin connectors through the case.... again, not a problem if you add ribbon cable as I have done (see pics). I was able to add mine AFTER I built the unit by using a large paperclip to push the hard plastic edge of the connector down onto each pin. Adapt, improvise, and overcome. So... for the price, not a bad oscilloscope at all. ... show more
Reviewed in the United States on July 16, 2022 by Michael Speciale, Jr. Michael Speciale, Jr.
    • Surprisingly Good
I didn't except much for this price but the item works as intended and the screen is surprisingly good. There are 2 significant issues: (1) The device does not work on 9V transformers, a 12 V supply is required. The instructions explicitly state that a 12V supply should not be used because this will cause overheating, so I'm not expecting a long life for this device. (2) The Plexiglas housing design for this device is terrible. If you are actually willing to send the time puzzling out the build (no instructions of course) you will find that the I/O prongs are now buried under 4 layers of Plexiglas , making attachment without bending the prongs very difficult. My advice; throw it all away except for the base plate and use the nuts provided to make stand offs with the screws as legs. If you are determined to use the Plexiglas plates provided; the small plate with the irregular cutouts is intended to go on the back of the smaller PCB with the screen mounted on it. This PCB must be pulled off the prongs on the larger PCB and then the Plexiglas plate mounted behind it. You will have to bend the caps and transistors to fit in the slots cut once remounted on the larger PCB. The other two smaller Plexiglas plates (with the long slots) now mount on top of the small PCB and the whole thing sandwiches between the two larger plates in the final box. But like I said; its not worth the effort. ... show more
Reviewed in the United States on January 8, 2020 by Bruschak
    • It's a fun project, and works
This oscilloscope is mostly put together, except the case. You need to assemble the case. It was a fun evening "project". There wasn't any soldering or electrical work. Just pieced together the case with some screws. The oscilloscope works well and is very cheap. Perfect to start learning on.
Reviewed in the United States on December 13, 2022 by Hector
    • as advertised
everything was there and works as it should
Reviewed in the United States on July 4, 2023 by Nicholas
    • Great oscilloscope, challenging case
Review Image by Amazon Customer Amazon Customer
Don't let the reviews stating that there are no instructions on how to assemble the case discourage you. In fact, the instructions are in the product description itself, though far enough down that they are easily missed. Look over the instructions before buying so you at least have an idea of what it takes to assemble it. It is still a challenge to assemble, but much less so when following the directions. Overall, I've been very happy with the scope. It's relatively simple to use and the cost is impossible to beat. Take the $33 plunge! ... show more
Reviewed in the United States on April 8, 2022 by Amazon Customer Amazon Customer
    • Did not work on first try, but then it started without fixing anything!
Just finished putting the case together, which takes a bit of figuring out (no instructions), but it is not rocket science either. But then connected it to my regulated bench power supply (set for 9.1V), and nothing... I like electronic projects, so I will fiddle with it and try to revive it, but if I am ordering it assembled it is because I want it of work out of the box! I get that this is a cheap unit DIY unit and I was well aware of the case not coming together, but if I wanted to have to fiddle with it, I would have ordered the parts kit! EDIT: for some reason, 30 minutes after writing above review, I was going to start checking for problems, and the thing booted up when I connected the power. God only knows why it did not power up before, but it is working fine now! I tested it with a tone generator, and it is right on the money! So I changed my rating from 1 to 5 stars, because, for the money, there is not anything better! Great little gadget! I intend to use it to trouble shoot my guitar pedals and other electronic projects! ... show more
Reviewed in the United States on August 3, 2020 by Juan F Rabat Lince
    • Hard to build, easy to use.
This is a great bang for your buck oscilloscope that does the job without a lot of fuss. As long as you know what you are doing you won’t have a problem. The only issue and why I rated 4 stars was the plastic case comes with 0 instructions. I had to assemble it based on pictures from the ad.
Reviewed in the United States on March 28, 2022 by Hayden
    • The case doesnt work
there was no directions for the case assembly nor could i figure it out, i had to make my own adapter for it to power on, the screen cracked easily when i stored it but still works kinda, and all together an oscilloscope is expensive and finding one for this cheap is a miracle itself but you really are just getting the bare minimum and you cant read very high voltages with it, but for the price of 30 dollars i give this 3 out of 5 ... show more
Reviewed in the United States on October 25, 2021 by Tanner

Can't find a product?

Find it on Amazon first, then paste the link below.