Hackaday Editors Elliot Williams and Mike Szczys geek out over the latest hacks. This week we saw a couple of clever CNC builds that leverage a great ESP32 port of GRBL. The lemonade-pitcher-based submarine project is everything you thought couldn’t work in an underwater ROV. Amazon’s newest Dot has its warranty voided to show off what 22 pounds gets you these days. And there’s a great tutorial on debugging circuits that grew out of a Fail of the Week. Plus, we get the wind knocked out of us with an ambitious launch schedule for airless automotive tires, and commiserate over the confusing world of USB-C.
Take a look at the links below if you want to follow along, and as always tell us what you think about this episode in the comments!
Take a look at the links below if you want to follow along, and as always, tell us what you think about this episode in the comments!
Direct download (60 MB or so.)
Episode 029 Show Notes:
New This Week:
- Mike’s prototyping a capacitive switch and LED hidden behind wood:
Interesting Hacks of the Week:
- Etch-A-Selfie
- Lego-Powered Sub Built In A Water Jug
- Taking A Peek Inside Amazon’s Latest Dot
- Lack Of Space Is No Longer An Excuse For Not Having A Pen Plotter
- A New KiCAD Tutorial Hits The Scene
- Fail Of The Week: The Arduino Walkie That Won’t Talkie
- Adreas Spiess on debugging:
Quick Hacks:
- Elliot’s Picks:
- Mike’s Picks:
Good show as always, guys. If you decide you have to have a usb thumb drive, I’d recommend getting an sd card reader that has usb c on one end usb a on the other. My laptop (and phone) are usb c only but I have various other machines that only have old school usb ports. They come in really handy!
I won’t link to them because I don’t want to shill. But I picked them up on amazon for a few bones.
The capacitive sensor is trivial, just tricky.
1) Countersink a hole from the back of the wood the size of your button, leaving a very thin layer of wood at the front.
2) Take a clear acrylic tube the size of your hole.
3) Insert your capacitive sensor in the tube
Now you have a light tube around your capacitive sensor that fits in the countersunk hole. Add the LEDs and you’re done.
Or is the correct term “counterbore”? In any case, a hole with a flat bottom.
Mike and Elliot, you don’t get a lot of comments on your podcasts, but I enjoy them. They are always a nice review. Sometimes I miss a HAD posting and can go back and read it if I hear about it on the podcast.
Yay! That’s what the Podcast is there for. Perfect.
Thanks for stopping by and saying so. :)
Thank you gents – I never thought of how pleasing it would be to watch you tube videos of forklifts fitted with mecanum wheels until you started talking about them :-)