Bike lights can be frustrating and slow to attach & remove, especially in bad weather with gloves on! By adding magnets to your lights, and your bike, you’ll be able to snap your lights on and off with your gloves on, and in a matter of one very satisfying move. Once you make your lights magneti...
[Saulius] couldn’t find a cost-effective wireless scale that did what he wanted, so he reverse engineered the communication protocol for an off the shelf model to get weight data himself.
[Saulius] bought a cheap Maxim 29-66SH scale that uses infra-red to communicate to a detachable digital readout. Using the USB IR toy, [Saulius] intercepted the messages that were broadcast. After a little reverse engineering and with the help of some Python scripts, he soon discovered the protocol his scale was using to encode weight messages.
[Saulius] went on to write a little web app using JavaScript, SocketIO and … Read the rest
Have you ever wanted to build a high quality audio crossover and amplifier? [Rouslan] has put a lot of thought into making his dual amplifier studio monitor both high quality and simple to build.
With a concise schematic, a meaningful block diagram, and simulation results to boot, his well-written post has everything you need to build self-powered bi-amped speakers based on the LM4766 from Texas Instruments. It is great to see simulations which verify the functionality of the circuit, this can go a long way when working with complicated analog filters and audio circuitry. For those of you who do … Read the rest
This Instructable is not going to be a step by step build log of my machine, but an overview of my design and what I learned over the course of this build. Hopefully I can share a few things to help with your CNC build. My frame design was based on various moving gantry CNC routers from around t...