Michael is looking for more advanced electronics kits…“I love building electronics kits, but I have run into a slight problem: there aren’t many out there past the “solder these 20 things” level. I’d love a complicated kit (too bad Heath Kits no longer exists). I would love an article on complex kits you can buy (maybe highlight a few in each price range). The last kit I bought that I really loved was an RGB LED Blinky from Ramsey Kits. You assemble a little tiny SMT circuit board (that was challenging, quite fun) and the one LED (which is 3 in one) glows all different colors. Very cool to show off.” Link. Any suggestions?