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Com groups: come un moderatore è finito dietro le sbarre

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    Assistive Radio Tells You What You Can’t SeeWe think of radios as audio devices, but for people who are visually impaired, it can be difficult to tell which channel you are listening to at any given time. [Sncarter] has a family member with vision impairment and built a radio to help her. Unfortunately, it was difficult to replicate, so he decided to try again. The result is an FM radio that provides audible status notifications about power and frequency. Check it out in the video below.This isn’t just some hacked-up commercial radio, but a ground-up design that uses a TEA5767 with an ATMega328 for control. There is an LCD for when someone else might use the radio and an audio amplifier. He built the prototype on a breadboard, but moved the finished product to a PCB.It isn’t just the electronics and the sound that are assistive. The case has raised bosses to help the user find things like the switch and rotary encoder. The Arduino can speak frequency announcements, although the quality of the voice is something he wants to tackle in the next revision.These radios on a chip give you many design options. These same ideas can be useful for audiobook players, too.youtube.com/embed/k918V9Mndko?…hackaday.com/2025/11/22/assist…
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    ⛪ Tabernacle Baptist Church. Somewhere in the USA. Built around 1905. Abandoned when the congregation relocated to another church, as the roof began to buckle and collapse. #Church #USA #Abandoned #Photography #Urbex #UrbanExploration
  • DIY TENS Machine is a Pain-Relief PCB

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    DIY TENS Machine is a Pain-Relief PCBTranscutaneous Electrical Nerve Stimulation (TENS) is one of those things that sounds like it must be woo when you first hear of it. “A trickle of current that can deal with chronic pain better than the pills we’ve been using for decades? Yeah, and what chakras do you hook this doo-hickie up to?” It seems too good to be true, but in fact it’s a well-supported therapy that has become part of scientific medicine. There are no crystals needed, and you’re applying electrodes to the effected area, not your chakras. Like all medical devices, it can be expensive if you have to buy the machine out-of-pocket… but it is just a trickle of current. [Leon Hillmann] shows us its well within the range of hackability, so why not DIY?[Leon]’s TENS machine is specifically designed to help a relative with hand problems, so breaks out electrodes for each finger, with one on the palm serving as a common ground. This type of TENS is “monophasic”– that is, DC, which is easier than balancing current flowing in two directions through quivering flesh. The direct current is provided at 32 V to the digit electrodes, safely kept to a constant amperage with a transistor-based current limiting circuit. The common ground in the palm is pulsed at a rate set by an ATmega32U4 and thus controllable: 14 Hz is given as an example.Obviously if you want to reproduce this work you’re doing it at your own risk and need to consult with relevant medical professionals (blah blah blah, caveat gluteus maximus) but this particular sort of medical device is a good fit for the average hacker. Aside from prosthetics, we haven’t seen that much serious medical hacking since the pandemic. Still, like with synthesizing medical drugs, this is the kind of thing you probably don’t want to vibe code.hackaday.com/2025/11/22/diy-te…
  • OK, I gotta hand it to CoPilot.

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    @matt I'm keeping the C++ back end, which was about half the code (for the sprite objects, various functions for dealing with loading and saving, etc.). At least for now. I may end up rewriting to Rust in the end. The reason I chose C++ was because I thought that got me a better GUI development experience with Qt. But, now that I know I hate Qt (not really, I just don't like the deployment and packaging and runtime story), I don't have any reason to use C++ and I don't really like C++, either.