kuman JYE Tech 06804K Digital LCD Oscilloscope DIY KIT JYE Tech 068 DIY KIT with 2-inch LCD, 20MHz Probe

I bought this kit so I could have a cheap scope for visualizing the output of my Raspberry Pi 3 experiments, and also because it's been several years since I've done any electronics work, and I wanted something to play with.This is NOT the JYE Tech 06804K. I received a 06804H. In fact, as far as I can find, there is no such thing as a revision K of this board. The board I received does not have a connector -- or a place for a connector -- for the test signal. The board in the picture does, but it's a model "F", which had several problems and had to be revised. A wire must be soldered to the revision H board for testing and calibration, then desoldered when done. The H board appears to have some similar problems to the F, notably with unreliability of the trim capacitors that are used for calibrating the oscilloscope: Several people are reporting in the JYE Tech forum that those capacitors have no effect and that the device can't be calibrated. I had the same result. Furthermore, when the USB and power connectors are soldered onto the board, the board no longer fits in the case. You have to enlarge the hole for the potentiometer in order to mount the board. The suggested method for mounting the BNC connectors means they would have to be desoldered if you need to remove the board from the case again.Important: DO NOT INSTALL TRANSISTOR Q2 until after you've soldered the pin strip for the LCD. There simply isn't room to solder three of the pin strips connectors if the transistor is in place. Also, be very careful when soldering the crystal into place. The crystal pictured is not the same kind that's supplied with the Rev. H board, and several people have reported that their crystals either didn't work or were damaged while soldering.While I wasn't able to calibrate the scope, mine produced a decent-enough square wave at 1V and 10mV. At 1mv, mine produced a terrible square wave, but that may have been due to something I did during soldering, although I'm not sure what.I used in with the PC Oscilloscope software that is available on JYE Tech's web site, and that worked very well for my purposes. I wish that the scope provided more numerical feedback without having to switch screens. The LCD shows a lot of noise where the PC Oscilloscope does not, and I've come to trust the PC display more than the LCD's.Nevertheless, this scope will suit my needs, and I'll definitely recommend it for learning. It's more than a toy, and -- despite its design flaws -- it can be useful, but be very careful when soldering. You should be good at through-hole soldering. And be very careful when soldering the plastic pin strips. Solder at around 300 deg. C (use AT MOST a 20W pen if yours isn't temperature adjustable), and don't leave the tip on a pin for more than three seconds per pin, or the plastic /will/ melt and the pins will move out of line.

Holy cow! It works! Best deal for a scope ever! Also, I was incredibly impressed that they provided not a single too few, nor extra components. I can't image being that precise on a mass scale. Even Ikea puts a COUPLE extra bits in their flat packs.The instructions were not the most clear at times, but I was able to assemble the thing in a night while watching x files, so it would probably be easier for someone who actually focuses on it %100. It made me feel pretty sciency and smart to carefully assemble and calibrate this thing. It was fun and just challenging enough to provide real satisfaction at the end. Sometimes it will freeze and I have to turn it off and back on, but I don't really know what I'm doing with it anyway, and it could be something I did assembling it. Mine did not come with a battery either, but I was able to squish a cell from an old RC plane pack into the back. You might order a new lithium cell for yours.Side note: about halfway through carefully completing something like 200 tiny solder connections without destroying the work or the tiny components, I began to wonder if there were entire rooms of like 8 year olds somewhere grinding though hundreds of such projects a day. It was pretty hard to push through the monotonous and delicate work of building ONE of these.You probably want a small precision soldering iron with a good tip though. I shouldn't have used an aging butane powered iron, as I was in constant fear of burning the tiny components, myself, and the workspace to the ground.

This is a really fun little kit, but definitely not for beginners. I agree with others who talk about being unable to read the resistor codes, but the resistors are absolutely tiny by necessity to be able to offer this in a through-hole design. I accepted that I would have to check all the resistor values with my meter and moved on. Again, not for beginners.It worked when I first powered it up and was able to follow the directions to assemble the case, although I had to put the board in before the BNC connectors where installed. I'd like the meet the guy who could do it otherwise as the directions indicate.The unit did lock up about the 5th time I turned it on. This is a known problem on their forum and is solved as described in the directions by shorting PF6 to ground and resetting the unit. I do believe this is a bug in the code but considering the last time the firmware was updated was 2014 I don't think they'll be issuing a fix. It pops up in their forum a couple of times. If/when it happens again I'll put a switch on the unit to short it for me.Overall, it works well and I recommend it.

Item arrived well and complete.Nice build took me some 10 hours, breaks included.Works perfectly. Some typos in instructions, nothing major.Connected to Windows 10 computer without issues: Advise, connect directly to computer, avoid using a hub.Totally satisfied.

Great kit. Could be very challenging for beginners. Was wanting an inexpensive oscilloscope for around the house and this fit the bill. Make sure you have a good soldering station as it will make the soldering experience a lot more pleasant. The instructions were complete and pretty easy to follow as long as you don't get ahead of yourself. Take your time and read the instructions.

Great little scope for practice...I wouldn't use on major projects. Requires experience with soldering iron. Many surface mount components.

Assembled up until hooking up the screen and did not work. Was junk at that point. Seems to be like a 30% this actually works.

Unit did not work and is in a repair shop!I am a retired electronic tectnian and had a very hard time with this device.Make a better kit!