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dustinbook 24/02/2020
This is a pretty nice kit overall, most of the 4x4 multi-color cubes are more pricey. Basically no instructions though, the youtube link they reference is dead. However, there is a URL on the board that shows how to build the cube part at least, and the labels on the board mask are clear enough to get it together. Lots of spares of various parts included too. The main thing I would ding is that they swapped the C2 capacitor in the kit with a taller version I see in some other pictures. This turns out to be taller than the feet, so it stands on the cap. You could solder it laying down, but the mask doesn't really suggest this and it looks like it used to be a fatter/shorter one.
4x4x4 Dual اللون LED Cube 3D ضوء مجموعة أدوات إلكترونية مربعة ذاتية الصنع مع التحكم عن بعد مراقبة
US$12.99 US$17.99
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dustinbook 24/02/2020
Cheap and easy, works pretty well as a fun little demo kit.
مجموعة أدوات الكشف عن المعادن EQKIT® DIY بها بنفسك لوحة ممارسة اللحام الإلكترونية
US$2.73 US$4.49
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dustinbook 09/09/2019
Overall, a fun project and a great looking clock for the price. The SMD LEDs on the front are time consuming, but not too hard to do. As a tip, the top 3 pads and bottom 3 pads are all bridged on the PCB anyway, so there is no need to carefully make sure that each pin isn't soldered to it's neighbors on the same LED. I did get one that died after a day, but I got 5 extras in the kit and it's bound to happen (either because I cooked it or it was bad). The speaker is obnoxious and tends to randomly chirp unless you are running it off of a battery or some other super stable source. I just de-soldered mine from the board and I would probably recommend skipping it. The pins on the SMD ICs are pretty challenging in particular, to not bridge them with solder, so this is probably not a beginner kit. It is probably worth buying a few of the backup batteries, since you do lose the time even if the power cable is disconnected or jostled for even a second. Might need a longer cable too, the provided one works but it is really too short to put it up anywhere. The modes are nice too - 5 is clock time only for the curious. You can get date, time, temp, and day of the week. It even seems to do a special holiday text scroll, though I'm not sure which ones it knows. Slick animations between everything.
Geekcreit® DIY DS3231 لمس Key مراقبة السطوع قابل للتعديل حجم كبير مصفوفة نقطية إنذار ساعةحائط Kit
US$17.99 US$21.99
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