A decent selection of boards to keep you busy for a couple hours. The random boards but you can definitely use them to work on your soldering or anything else you want to do. I was definitely glad I purchase my random boards.
Even with the shipping fees to Europe this was worth the money I've spend! The option of not getting any LED's was great, since I got lots of 3mm LED's here anyways and I chose green and amber as colors. The footprints are all chosen well, no pads felt too small here as they might do in other kits.
The PCB design is very clean, the corners are nicely rounded off, but I'm missing some mounting holes to be able to mount a case to it, to hold the battery in place. There's a very detailed step by step guide that I almost completely ignored. The two 100nF 100V capacitors seem a bit unnecessary or over the specs, but thinking that 4 LEDs are turned on through 2 pins on a 120 Ohm resistor, this might be necessary.
But why the 4/5 stars then? My Atmega328 came with unset fuses, so instead of using the external 16MHz crystal, the Atmega ran on the internally generated 1MHz instead. Which meant the startup animation took 32 seconds to finish. I quickly soldered on an ISP and FTDI header to work on the firmware, since it doesn't check if anyone reached the goal of 3 in a row yet. Luckily the Arduino code is shared and open source, so I was able to embarrass myself in front of an audience and program said function.
The code can be found here https://github.com/davedarko/tictactoe/tree/main
Response from Jim Heaney | April 16, 2021
Glad to hear you enjoyed the kit! I'll definitely make a note to add mounting holes on the next revision. Maybe also adding an ICSP header would be beneficial.
Not sure what happened with the fuses, I set those when I flash the code. I'm glad you were able to fix it though! If anyone else happens to find their chip is taking long, let me know and I'd be happy to send a re-programmed replacement.
I bought the kit, assembled and hooked it up... only to find it didn't do as I expected it to... because I can't read lol
I thought this could switch between audio INPUTS.. even though it is clearly labeled an OUTPUT switch lol.
Once I set it up as intended, it worked like a charm!
Great little project for those learning to solder! What's also cool is it serves as a great drop in for larger projects, thou it did not work in mine for the above reason of my brain did a dumb. Still, the board fit, and all connections worked as expected in a nice small package.
Not to mention communication with the seller, I reached out to him with my issue, and he was able to infer and remedy my mistake instantly.
Will buy again, and definitely will buy from the seller again!