Gizmos and Stuff: fevereiro 2021

quarta-feira, 24 de fevereiro de 2021

Torcer a 90º! E uma data de engrenagens, Radio WiFi, e um pantógrafo para fresa

Algo para espantar os amigos e família, uma engranagem a 90º, mas sem dentes!

sim, há maneiras de criar engrenagens sem rodas dentadas...

Twisty Toy
rschoenm
I designed this simple twisty toy based on an epicyclic bar angular transmission. It's a cool little fidget toy that looks like it shouldn't turn. Works well as a stress reliever!
You can make this toy with either a wood lathe, or a 3d printer, or a laser cutter.

Supplies:
Hardwood like maple and cherry
1/8" brass rod
3/8" dowel
CA glue, wood glue
https://www.instructables.com/Twisty-Toy/

Ora aqui está um curioso projecto para ouvir Rádio do WiFi, para a vossa criançada, que ainda não têem idade para acessar o Spotify:

RFID Internet Radio
tars.vanhoof

Hello fellow makers,

This Instructable describes how I made an RFID internet radio for my kids. They like to listen to music but since they're too young to start Spotify and cast to the TV themselves, I decided to make an easy and hopefully fun interface for them. This was a Covid-19 project so I took my time.

The player is built with a Raspberry Pi, a HiFi module and an RFID module. The tags are put in a base on which wooden puppets are glued which are easily identifiable for the kids as containing a certain playlist. I also designed and built a nice enclosure because it will be visible in our living room and therefore it has to look good.

I made a lot of personal choices during the development but because it's built around a Raspberry pi it's very customizable. I'll try to describe my progress and all the problems I encountered as detailed as possible.

I've already got a few upgrades in mind such as removing the (need for) buttons to make it even simpler, I'd like even better full-range speakers, playlist programming via a smartphone, maybe in the long run easier set-up of WiFi and Spotify for non-Raspberry-savvy family members...

I'd love to see what others make of it! Can you guess which song the puppet on top is for?
https://www.instructables.com/RFID-Internet-Radio/