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Reviewed in the United States on March 8, 2025
What I received appears to one of the DSO138 knockoffs. It is slightly modified from what is described in the instructions, which are the DSO138 instructions with "DSO138" erased. Zero ohm SMD resistor jumpers are pre-installed where the instructions say to bridge two contacts with solder. Notably, one of the two trim capacitors provided doesn't come near the specifications, it has a far higher capacitance range. I'm not knowledgeable enough to understand why or what impact this has on the device's performance. I wouldn't trust it for very high frequency work. It seems to work OK after I tracked down several soldering errors I made the first time assembling it. Fun and educational project overall and decent value considering the lower price than some other comparable items.
Bobson Dugnutt
Reviewed in the United States on March 8, 2025
What I received appears to one of the DSO138 knockoffs. It is slightly modified from what is described in the instructions, which are the DSO138 instructions with "DSO138" erased. Zero ohm SMD resistor jumpers are pre-installed where the instructions say to bridge two contacts with solder. Notably, one of the two trim capacitors provided doesn't come near the specifications, it has a far higher capacitance range. I'm not knowledgeable enough to understand why or what impact this has on the device's performance. I wouldn't trust it for very high frequency work. It seems to work OK after I tracked down several soldering errors I made the first time assembling it. Fun and educational project overall and decent value considering the lower price than some other comparable items.
Electro
Reviewed in the United States on March 3, 2024
If you don’t solder the BNC correctly the first time the device is useless
Electro
Reviewed in the United States on March 3, 2024
If you don’t solder the BNC correctly the first time the device is useless
james t.
Reviewed in the United States on September 12, 2023
Fun kit, easy to build even for a first electronics project.It is a very crude ocilloscope, but it does work.You'll want a multimeter and a soldering iron and a 12v power supply.I used it for a few low frequency projects working with mains, I needed a scope, and I am happy with the results.
james t.
Reviewed in the United States on September 12, 2023
Fun kit, easy to build even for a first electronics project.It is a very crude ocilloscope, but it does work.You'll want a multimeter and a soldering iron and a 12v power supply.I used it for a few low frequency projects working with mains, I needed a scope, and I am happy with the results.
Troy Stockton
Reviewed in the United States on December 3, 2023
It took me 2 kits in order to get this working. The first kit had a bad inductor and would not create proper voltages. It would have not been so bad if it didn't take an hour+ of soldering to find that out.I spent a total of 3 hours+ at my bench between soldering and troubleshooting. If you aren't a fan of tinkering, steer clear of this specific unit.Amazon should also consider upping replacement ship times. It took 1 day for the original to arrive and almost an entire week for the replacement to arrive.
Troy Stockton
Reviewed in the United States on December 3, 2023
It took me 2 kits in order to get this working. The first kit had a bad inductor and would not create proper voltages. It would have not been so bad if it didn't take an hour+ of soldering to find that out.I spent a total of 3 hours+ at my bench between soldering and troubleshooting. If you aren't a fan of tinkering, steer clear of this specific unit.Amazon should also consider upping replacement ship times. It took 1 day for the original to arrive and almost an entire week for the replacement to arrive.
Customer
Reviewed in the United States on November 1, 2023
Came with clear color instructions schematics and diagrams that was very helpful. All parts were there and took me few hours to assemble and test. 9V power supply not included, but I found one lying around that worked. Very nice!
Customer
Reviewed in the United States on November 1, 2023
Came with clear color instructions schematics and diagrams that was very helpful. All parts were there and took me few hours to assemble and test. 9V power supply not included, but I found one lying around that worked. Very nice!
LamasBla
Reviewed in the United States on August 11, 2022
You can go from no solder expierience to being a novice after this project there's around 50-100 components of various form factors you solder. I've done 2 of these and had a blast probably a 2-6 hour+ project depending on skill and how pretty you want your joints to look. I do recommend a tweezer and preferably a helping hands clamp for best results visually
LamasBla
Reviewed in the United States on August 11, 2022
You can go from no solder expierience to being a novice after this project there's around 50-100 components of various form factors you solder. I've done 2 of these and had a blast probably a 2-6 hour+ project depending on skill and how pretty you want your joints to look. I do recommend a tweezer and preferably a helping hands clamp for best results visually
Industrial Review
Reviewed in the United States on June 15, 2022
I bought the kit, soldered it all together and it works quite well. The markings on several components are difficult to read because they were poorly marked. Difficult even with magnifying glasses.
Sam
Reviewed in the United States on June 15, 2022
I have assembled several of these DSO-138 oscilloscope kits. This kit is by far the worst that I have seen. Several parts were missing, two capacitors, one of the 3 position switches and two of the resistors. I had all of the missing parts, even the 3 position switch! In the end the board did not work. I have been an engineer for more than 40 years and I can usually figure out what is wrong. There was no assembly error (check everything several times). It appears that either the processor is dead or there is a manufacturing error on the board.
Industrial Review
Reviewed in the United States on June 15, 2022
I bought the kit, soldered it all together and it works quite well. The markings on several components are difficult to read because they were poorly marked. Difficult even with magnifying glasses.
Sam
Reviewed in the United States on June 15, 2022
I have assembled several of these DSO-138 oscilloscope kits. This kit is by far the worst that I have seen. Several parts were missing, two capacitors, one of the 3 position switches and two of the resistors. I had all of the missing parts, even the 3 position switch! In the end the board did not work. I have been an engineer for more than 40 years and I can usually figure out what is wrong. There was no assembly error (check everything several times). It appears that either the processor is dead or there is a manufacturing error on the board.
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