“We want to get this done quick, not right.”
[CNLohr]’s favorite desk lamp broke, so he gave himself a challenge: convert the lamp to LED and control it via WiFi within 5 hours, from scratch. He video recorded and narrated the whole process and did a nice job of explaining the tricky parts and failures along the way, fast forwarding us through the slow parts.
Some bits and pieces were simple and obvious: gut the old bulb, wire some LEDs, add a few power resistors, toss in a power supply from “like a monitor or something, don’t care” for the LEDs, add in what looks like an LM2596 adjustable power supply for the logic, some kind of ATMega, that new ESP8266 (Wi07C), splice on a power cord, etc. Standard stuff.
To our readers who’s hacks tend to start with soldering irons and screwdrivers, the video shows harder parts of designing an electronics project: creating the PCB in software (he used KiCad), lithographically transferring the circuit to a PCB, bismuth solderpasting & populating the board, and writing and documenting his code on Github. Perhaps most reassuringly, he also showed the consequences of every greedy shortcut and the process of troubleshooting around them.
If you have ever tried to follow a recipe from a cooking show and noticed how easy it all seems when everything is measured and prepped beforehand – and then what a disaster it is when you try it – the same is revealed here. Overall, it is a very thorough demonstration of what it actually takes to design a project – not just perfect circuits and perfect steps to follow.
In the end he got it done
in the nick of time an hour late because he cannot add. Close enough.
Thanks [gokkor] for the tip.
On Thursday, November 13th we’ve rented a huge hall in Munich, Germany and plan to host a hacking event followed by a celebration.
You need to take the day off of work and join us. Better yet, convince your boss that this is professional development and that attending is good for the company!
We’re not taking the space shuttle across the pond, this illustration reflects the connection with The Hackaday Prize. This trip will mark the end of the contest and the unveiling of the Grand Prize winner.
What do *you* want to hack?
The big question we have right now, is what kind of hands-on hardware hacking do you want to do? We published a page over on Hackaday.io to discuss the possibilities. Let your imagination run wild and we’ll do our best to make it all happen. We know from James’ hackerspace tour last year that there are a ton of Hackaday community members within reasonable travel distance from Munich. Here’s our chance to get everyone together for an Epic day of building and night of partying.
The HackPhx Winter 2014 hackathon was held at Heatsync Labs hackerspace in Mesa, Arizona, USA. The advertised theme was “Arduino Wearables”. Participating attendees were randomly placed on teams evenly distributed by their disclosed skills across all teams. There were 10 teams with 4 to 5 members per team competing for two winning spots.
Each team had to build an amazing wearable project utilizing the secret ingredient which was Seedstudio’s Arduino-compatible Xadow wearable platform and add-ons. The Xadow is similar to the Arduino Leonardo and participants used an Arduino cross compatibility and pin mapping chart to assist in development.
Top prize was the Judges’ prizes for the best completed and documented Xadow wearable team project. The second prize was the Jury’s prize given to the team project that the other teams liked the most regardless of event criteria.
Read more about the winning teams and watch their presentations after the break.
Continue reading “HackPhx Winter 2014 Hackathon Winners”
In this video, [Joe Grand] takes us through [Team Van Gogh’s] entry in the OpenXC hackathon event. In what could possibly be the greatest road trip in history, [Joe Grand, Ben Krasnow, TechNinja, and Super Awesome Sylvia] all pile into a car. With them they bring a host of dev boards, wires, a CB Radio, and of course Sylvia’s WaterColorBot.
As their name implies, [Team Van Gogh] took a more artistic approach to the challenge than other teams. OpenXC steering, gear shift, accelerator and brake data is sent through a ChipKit to an RS-232 link into [TechNinja’s] laptop. The laptop translates the data into commands for the WaterColorBot. With this system, a simple Sunday drive can become abstract art.
The team also showed the concept of what could be done if OpenXC was extended to send data back to the vehicle – something Ford doesn’t support. Their example works when a phone call comes in by using the system to lower the volume on a CB radio standing in for car’s Bluetooth system.
Most of this challenge was completed with simulated data from the OpenXC vehicle interface. The team only had a few minutes to work the bugs out in a real vehicle. However, they proved their concepts well enough to win the grand prize.
Continue reading “Team Van Gogh uses OpenXC to create art from your drive”
We’re not sure if this was some type of corporate team building, but if it was sign us up for the next one. [Filipp], [Saluka], and [Michael] participated in a recent 24-hour hackathon hosted by Microsoft. They whipped up this labyrinth game controlled by a Nexus 4 Android phone.
This thing looks so well crafted we’re shocked that it’s a 24-hour build. Just putting together the walls of a maze that size takes some time. They then mounted it in a gimbaled frame which tilts the using servos. Check out the demo video below to get a look at the underpinnings. There are several elastic bands connecting the base to the maze. These act as shock absorbers to help keep the movement smooth and to prevent any oscillations from the frame flexing. For us this is an important design element that we’ll keep in mind (just in case we need to win another competition by designing a labyrinth).
An Arduino controls the servos, using Bluetooth to communicate with the phone. The team mentions some filtering used to help make the user experience more natural but we didn’t see many details on this aspect of the hack.
Continue reading “24-hour hackathon produces respectable accelerometer labyrinth”
The LVL1 Hackerspace held a hackathon back in June and this is one of the projects that was created in that 24-hour period. It’s a 3D scanner made from leftover parts. The image gives you an idea of the math used in the image processing. It shows the angular relations between the laser diode, the subject being scanned, and the webcam doing the scanning.
The webcam is of rather low quality and one way to quickly improve the output would be to replace it with a better one. But because the rules said they had to use only materials from the parts bin it worked out just fine. The other issue that came into play was the there were no LCD monitors available for use in the project. Because of that they decided to make the device controllable over the network. On the right you can see a power supply taped to the top of a car computer. It connects to the laser (pulled out of a barcode scanner which produces a line of red light) and the turntable. A Python script does all of the image processing, assembling each slice of the scan into both an animated GIF and an OBJ file.
Startup accelerator Y Combinator and Upverter are joining forces to run a hardware hackathon. This event aims to encourage hardware hackers to get together and design new products in a twelve hour sprint. Startups including Pebble, Octopart, and Lockitron will also be participating.
It’s a free event, and the winning teams will get their design manufactured. Participants will retain the rights to their designs, get free professional Upverter accounts, and have the chance to chat with some of the Y Combinator partners. This makes it a great opportunity for people looking to create their own hardware startup.
The event takes place on February 23rd at the Y Combinator offices in Mountain View, CA. Registration is open until February 8th. If you’re in the Bay Area and do hardware, you should check this event out.