ICQUANZX XR2206 High Precision Function Signal Generator DIY Kit Sine/Triangle/Square Output 1Hz-1MHz Adjustable Frequency Amplitude

As a soldering kit this thing is pretty cool. It was fun to put it together, no missing components. The kit comes with a useless printed copy of the circuit tough, if you want to see a good tutorial, search YouTube for “DIY AC Waveform Function Generator Kit - The Learning Circuit” from Element14.Now, when it comes to using it as a signal generator, it's alright but not amazing. You won't know the exact frequency or amplitude of what you're sending out, which can be a bit of a bummer. The square wave is fixed at a 50% duty cycle too, so no tweaking that. The sine wave maxes out at about 5.6V peak to peak and starts to clip, but for the price, I don’t complain. Just know that it's more for playing around than doing any more serious experiments.I've tested it out, and at 500 Hz, the signals are pretty clean. Push it to its max ~1.2MHz, and you'll see some quirks with the sine wave and the square wave's ramp-up. So, it's decent for casual use, like if you're messing with a simple amp circuit or doing a quick PWM prototype.It'd be awesome if you could adjust the square wave's duty cycle. But as it stands, it's a decent, fun little project that gets the job done for simple stuff.

A little clumsy to put together, not difficult it's just that the instructions are very limited. I found that looking at various Amazon web pages for this item (across several vendors that carry it) helped with putting it together correctly. Yes it has modest distortion, but it's <$10 including delivery - so it's great considering the cost. Fine for basic electronics testing of circuits.

Nice easy build, a good first electronics project for a novice. I pretested all the components and they were all functional and within tolerances. One little complaint was that the polarity of the capacitors was not marked +/- but with a half moon symbol on the printed circuit board. This symbol was not clearly defined in the user assembly instructions. The symbol might be obvious to an experienced builder, but I had to go hunting the internet for it to make sure that I got the polarity right.Also, make absolutely sure that the potentiometers are 100% square and level in their mounting holes before soldering, If they are at all out of alignment, the case will not fit.The finished device makes a great audio signal injector for other audio projects and as an audio signal tracer.

This was fun to put together and it was working okay. Unfortunately, when I was working on a car radio, I touched one of the output wires where I should not have and it is now kaput. I will probably buy another to replace it.

For a low-cost signal generator that is fun to put together, this is a great option. Also there are online video guides to help show some mods you can make to even improve it's performance. im glad I got it and would buy again.

I've worked with electronics most of my life and assembled hundreds of PCB circuits so I know what I'm doing. No errors in assembly on my part with this unit.I bought this for one reason. I need a sine wave. Doesn't have to be perfect, just close and this does not produce anything resembling a sine. It does a triangle wave no matter which settings you chose or voltage applied. Instructions are illegible. Case breaks just pulling the laser mask paper off. Just a garbage, time wasting kit.

I bought this slightly more expensive kit than the Gearwoo XR2206 because the reviews mostly said it didn't work due to a counterfeit chip. You'd think all of these kits would be exactly the same and it is pretty cheap in any case, but I spent a few more bucks to buy the one with better reviews. The chip looks good to me and operates as expected, so the kit is good. A fair amount to solder together, but not so much it wasn't fun to put together. Pretty amazing for just $10. Mine worked immediately after construction. I tested it by putting at the lowest 1-10hz setting and attaching my analog meter. I could see the needle bounce up and down according to the frequency.When assembling, you need a magnifier to read the capacitor values and a multimeter to read the resistance values. When mounting the big electrolytic cap, make sure you press it all the way down to the board, otherwise the case won't fit. You can bend the "wings" of the pots together to hold onto the board. The small screw/nuts just go onto the small board to make it stand up from the bottom of the case. The large screws are for the outside, be careful when tightening, you could crack the case since the screws attach directly to the case. It is a bit of a Chinese puzzle box to figure out which directions the pieces go. I ran it with a 100MA wallwort. I tried directly driving a earphone and speaker, but that didn't work. I connected a 1/8" headphone jack and fed it into a small guitar amp which made it so I could hear the signal.

Finally put it together, which went fine. Had a little issue putting it into the provided case, looks like the elec. caps didn’t get close enough to the board. But that’s ok for now. Unable to very the output do to one of the connections for the output is damaged, the clamp piece ( insert) is missing. Still trying to figure out how or find a replacement part. So make sure you check all components for any damage before assembling