Putty

We are a mixed bag here, but sometimes we use macs, sometimes linux, sometimes windows. Many purists gasp at that, but that’s the simple truth is that you need to be well versed in all of the systems to appreciate the differences. To that end, we wanted to write about...
Read more

Go Kart Light Relay

Go Kart Light bulb relay. This is a simple build. It just uses a relay shield and Arduino to control a set of relays and bulbs. It turns the bulbs from red to yellow to green. I used it when I built a go kart track for my daughters birthday....
Read more

Do It Yourself Electronics

The Do It Yourself electronics place in Needham, MA, is awesome. If you need parts, it’s always somewhat of a pain to order online-you can choose Chinese made parts, which sometimes are questionable, and definitely are cheaper, but you wait a long time in shipping. Or you can choose parts...
Read more

Chinese Laser Cutter

Cheapo Laser Cutter: It took a while to get the drivers and software setup correctly. And I still have to reverse the images to get them to engrave correctly, but for $200 bucks, it’s a great Chinese made laser engraver. It’s not too big, and it doesn’t cut-unless you engrave...
Read more

5 inch Screen from Aliexpress

I suppose this is what it means when you order from Chinese websites and buyer beware, BUT; We ordered a 5 inch hdmi screen from a seller on aliexpress. It said specifically for hdmi, and for us, that means it’ll work with any hdmi source. Not quite true, just so...
Read more

Toll Booth Controller

Toll Booth controller: So my kids wanted to have a toll booth, for whatever reason. They like pedaling through and stopping each other, having to pay imaginary money, whatever. So I built an Arduino controlled, servo lifting, box. It has leds for the signals-to let them know to go through...
Read more