151–160 of 415 posts
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I mainly work in web-dev, but working in embedded systems is kind of my hobby. It's kind of refreshing working on bare-metal, optimizing up-to single bytes of data, when I'm usually working on layers and layers of abstraction everyday.
Where does a web-dev turn to to get started in this as a hobby?
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What I don't know is why all phones don't have a QR/barcode reader application preinstalled. A QR code is the best of both worlds.
iOS has this standard, default camera app
I support the idea of having built-in barcode reader which can scan barcode from the screen as well e.g. images in webpage.
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Where does a web-dev turn to to get started in this as a hobby?
I highly recommend the ESP8266 and ESP32 once you're a little more familiar with the arduinos. They have Wifi, and the ESP32 is actually very powerful and has two cores. They make for great DIY home automation/IOT devices and are pretty easy to work with.
Second this. The ESP8266 (a nodeMCU) is about as powerful as an Arduino Uno, is about half the size of a credit card, is very thin and costs around $3.
The wifi part is the biggest advantage. You can send sensor data directly to your server via simple http requests.
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I don't see why you were downvoted. I fully get why the blog writer didn't include USB-C with this awesome project. But there's now a growing group of people who simply can't use USB-A anymore with their laptops. Most will have an adapter, but not all.
What an absurd tragedy. Everyone was just fine with usb-A and ethernet ports and hdmi but no, now these laptops need dongles for literally everything.
While it's a fascinating project I'd have some security concerns about plugging someone's USB business card into my computer.
ethernet on a business card is just not as viable.
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I don't see why you were downvoted. I fully get why the blog writer didn't include USB-C with this awesome project. But there's now a growing group of people who simply can't use USB-A anymore with their laptops. Most will have an adapter, but not all.
While this is generally true, I think it’s less true for embedded systems. All of the tools I use at work for embedded systems engineering (JLink, serial adapter, oscilloscope, logic analyzer, nearly all MCU dev boards and FPGAs) are USB-A. I use a MBP and simply could do any work whatsoever without a USB hub. I think it’s fair to assume anyone in the industry can use USB-A.
Edit: I remember something, having done work related to embedded stuff. About 6 years ago, we still had 3.5" floppy drives in a couple of scopes in the lab. We replaced those with a device that internally had the interface of a 3.5" floppy drive, but on the outer faceplate it had a USB-A connector for thumb drives.
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My note was not at all about lead-free hate, actually, since several years, everyone in EU (and I believe in US as well) has been using lead-free solder (ROHS is 2003, if I recall correctly). As you say it is just a matter of slightly increasing the soldering iron temperature, but it doesn't end there and there may be issues further on (JFYI): https://en.wikipedia.org/wiki/Whisker_(metallurgy) It seems like lead-free…
I took a quick look at a rework station in an aeronautic company in France, all leaded solder.
Very possible, there are a number of (pretty much wide) exemptions even in the last version:
https://www.gov.uk/guidance/rohs-compliance-and-guidance#wha...
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ethernet on a business card is just not as viable.
Perhaps you could do something like this, incorporating the jack into the PCB instead of an elevated component? https://upload.wikimedia.org/wikipedia/commons/d/df/XJACK_ne...
