You really should learn to read Morse code. But if you can’t — or even if you can, and just want a break — you can always get a computer to do it. For example, [jmharvey1] has a decoder that runs on a cheap Bluepill dev board.
The device uses a touchscreen and a few common components. The whole thing cost about $16. You can see it at work along with a description of the project in the video below.
Continue reading “Bluepill Copies Code So You Don’t Have To”
Hackaday editors Mike Szczys and Elliot Williams navigate the crowded streets of the hackersphere for the most interesting hardware projects seen in the past week. Forget flip-dot displays, you need to build yourself a sequin display that uses a robot finger and sequin-covered fabric to send a message. You can do a lot (and learn a lot) with a 1-bit computer called the WDR-1. It’s never been easier to turn a USB port into an embedded systems dev kit by using these FTDI and Bluepill tricks. And there’s a Soyuz hardware teardown you don’t want to miss.
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!
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Continue reading “Hackaday Podcast 053: 1-Bit Computer Is A Family Affair, This Displays Is Actually Fabulous, And This Hoverboard Is A Drill Press”
[W8BH] attended a talk by another ham, [W8TEE] that showed a microcontroller sending and receiving Morse code. He decided to build his own, and documented his results in an 8 part tutorial. He’s using the Blue Pill board and the resulting device sends code with paddles, sends canned text, provides an LCD with a rotary knob menu interface, and even has an SD card for data storage.
All the code is on GitHub. If you are interested in Morse code or in learning how to write a pretty substantial application using the Blue Pill and the Arduino IDE (or any other similar processor), this is a great exposition that is also a practical tool.
Continue reading “Blue Pill Makes Cheap But Powerful Morse Tutor”
If you code or write a lot, you live or die with your keyboard. The Venabili web site calls Venabili “the delightful keyboard” which begs the question: what makes a keyboard delightful. The site continues:
“Venabili is a 40% mechanical, programmable, ergonomic and hackable computer keyboard.
Being a fully programmable keyboard, it gives you the ability to create layers of functionality, declare multifunction keys that can operate as both modifiers and normal keys, control the mouse, define macros, and more.”
Sounds at least 40% delightful, right? Where do you buy one? You don’t. The keyboard is a set of plans and like a Jedi lightsaber, you have to build your own. Continue reading “Venabili Is The Delightful Keyboard You Can’t Buy”
[Tim Schumacher] got a Crazepony Mini quadcopter and has been reprogramming it “bare metal” — that is to say he’s programming the STM32 without using an operating system or do-it-all environment. His post on the subject is a good reference for working with the STM32 and the quadcopter, too.
If you haven’t seen the quadcopter, it is basically a PC board with props. The firmware is open source but uses the Keil IDE. The CPU is an STM32 with 64K of program memory. In addition, the drone sports a wireless module, a digital compass, an altimeter, and a gyro with an accelerometer.
Although the post is really about the quadcopter, [Tim] also gives information about the Blue Pill which could be applied to other STM32 boards, as well. On the hardware side, he’s using a common USB serial port and a Python-based loader.
On the software side, he shows how to set up the linker and, using gcc, control output ports. Of course, there’s more to go to work the other peripherals, and Tim’s planning to investigate CMSIS to make that work easier. Our earlier post on STM32 prompted [Wassim] over on Hackaday.io to review a bunch of IDEs. That could be helpful, too.
Catch up on your Hackaday with this week’s podcast. Mike and Elliot riff on the Bluepill (ST32F103 boards), blackest of black paints, hand-crafted sorting machines, a 3D printer bed leveling system that abuses some 2512 resistors, how cyborgs are going mainstream, and the need for more evidence around airport drone sightings.
Stream or download Episode 4 here, and subscribe to Hackaday on your favorite podcasting platform! You’ll find show notes after the break.
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Continue reading “Hackaday Podcast Ep004 – Taking The Blue Pill, Abusing Resistors, And Not Finding Drones”
Arduinos are helpful but some applications require more than what Arduinos can provide. However, it’s not always easy to make the switch from a developed ecosystem into the abyss that is hardware engineering. [Vadim] noticed this, which prompted him to write a guide to shepherd people on their quest for an Arduino-free environment, one BluePill at a time.
With an extended metaphor comparing Arduino use and physical addiction, [Vadim’s] writing is a joy to read. He chose to focus on the BluePill (aka the next Arduino Killer™) which is a $1.75 ARM board with the form factor of an Arduino Nano. After describing where to get the board and it’s an accompanying programmer, [Vadim] introduces PlatformIO, an alternative to the Arduino IDE. But wait! Before the Arduino die-hards leave, take note that PlatformIO can use all of the “Arduino Language,” so your digitalWrites and analogReads are safe (for now). Like any getting started guide, [Vadim] includes the obligatory blinking an LED program. And, in the end, [Vadim] sets his readers up to be comfortable in the middle ground between Arduino Land and the Wild West.
The debate for/against Arduino has been simmering for quite some time, but most agree that Arduino is a good place to start: it’s simpler and easier than jumping head first. However, at some point, many want to remove their “crippling Arduino dependency” (in the words of [Vadim]) and move on to bigger and better things. If you’re at this point, or still cling to your Uno, swing on over and give Vadim’s post a read. If you’re already in the trenches, head on over and read our posts about the BluePill and PlatformIO which are great complements for [Vadim’s].