Guest Curator Emmett Lalish has this to say about this 3DxMechanicals project: “This shows we’re well on our way to the holy grail of integrated printed electronics. Surely someone has realized that a 3D printer basically is a pick and place machine, right? It’s only a matter of time. I can’t wait to see non-planar electronics integrated throughout the volume of a 3D printed part.
This is a 3D printed circuit board that is the same size as a standard soldered perfboard. However it uses a conductive material for the conductive traces instead of copper cladding. Holes in the board allow component leads to be connected in printed channels that are later filled with a conductive paint or epoxy.
Most Americans, kids and adults, do not know what engineering is or what engineers do. They don’t know that engineering is a collaborative, creative process that makes a difference in all of our lives—from advances in life-saving medicines to more productive crop yields to clean drinking water.
Engineers Week is a time to make a difference by celebrating our accomplishments and sharing our knowledge, experiences, and enthusiasm. It is a time to turn comments like “I didn’t know that” into exclamations of “I want to do that!”
It is a time to come together and mobilize our colleagues—engineers, engineering students, technicians, and technologist—to volunteer to make a difference by visiting a classroom, recognizing the work of a colleague, or hosting a public event.
Matt Blythe provides a complete guide on how to make this Valentine’s Day Puzzle Box. The box can only be opened by rotating it in a correct sequence of orientations. There are four difficulty levels: easy, medium, hard and impossible.
After I saw this post on hackaday.com about ST Microelectronics giving away STM32F3 Discovery boards for free, I knew I had to have one, but I didn’t really have a specific project in mind for a while. Then, one day I remembered a reverse geocache box that was also featured on hackaday, and realized that I could do something similar. The F3 Discover board includes a 3-axis accelerometer & 3-axis gyroscope, so instead of using GPS, I would only have the box open when it was rotated through the correct sequence of orientations.
Happy Valentine’s Day from Adafruit! Today we are highlighting our favorite heart-shaped electronics projects. We have lots of excellent projects to let your loved one know that you care. Be sure to check out our gift guide as well!
What if making an Arduino, or wiring up an Arduino was as easy as printing one out? In this tutorial we printed our own Arduino Pro Mini board using a pen plotter and the Electroninks Circuit Scribe (a rollerball pen with highly conductive ink). Within 15 minutes we printed the board, placed components down with glue or tape, and uploaded a sketch.
The Hardware Startup Engineering Summit is designed for engineers who want to create a new market, disrupt an existing one, or learn more about the agile product development strategies employed by successful hardware startups today. The summit features a rock star lineup of engineers who have first-hand experience in founding their own startups, with content ranging from funding strategies to tips on refining your design to get it into production, to finding and working with a manufacturing partner and successfully navigating your way through the trade-offs and challenges inherent in every step along the way. Register Now
One of the critical functions for electronic devices is a process known as rectification in which an electrical current can be forced to move in one direction and then the opposite one. Rectification makes possible electronics devices such as transistors, diodes and memory circuits.
Now researchers at Purdue University’s School of Mechanical Engineering and Birck Nanotechnology Center have determined that a material based on graphene is capable of producing this rectification effect not on electric current but on heat flow.
While still just a simulation, the research shows that graphene can confine phonons to create a kind of “thermal rectifier” in which heat flow is directed like electrical diodes direct electrical current. Phonons are vibrations in a crystal lattice that carry heat, but outside of this work they are usually viewed as a nuisance to be eradicated because they produce noise in electronic circuits and cause other problems.
“In most systems, heat flow is equal in both directions, so there are no thermal devices like electrical diodes. However, if we are able to control heat flow like we control electricity using diodes then we can enable a lot of new and exciting thermal devices including thermal switches, thermal transistors, logic gates and memory,” said Xiulin Ruan, an associate professor at Purdue, in a press release. “People are just starting to understand how it works, and it is quite far from being used in applications.”
Ardunaut: “A simple tool to deal with the wiring and programming. Suggestions will be appreciated. … and thanks for this tiny board , l’m having a great time recreating many of my projects with it.”
TheKitty: “I tweaked the diagram a bit. [Above.] The input is 5.5-16V, pin 4 cannot use regular analogWrite, and some other embellishments like those used by Pighxxx and GreyNomad in other Arduino diagrams. People have also asked what resistors are connected to what pins as they may give different impedances or pullup conditions. [Below] is a diagram that is a subset of the schematics showing the resistances. Hopefully I’ll have accompanying info on pullup/pulldown. I thought there was a post on pullup/pulldown/internal pullups earlier by a user but I cannot find it….”
Self-taught signals and electronics hacker, Oona Räisänen was watching a raw clip from a news helicopter capturing a police chase. She noticed an interference in the audio, which turned out to be a mysterious digital signal. What she discovers is really quite interesting!
What could it be? Location telemetry from the helicopter? Information about the camera direction? Video timestamps?
The first guess seems to be correct. It is supported by the relationship of two of the three byte groups. If the 4 first bits of each byte are ignored, the data forms a smooth gradient of three-digit numbers in base-10. When plotted parametrically, they form an intriguing winding curve. It is very similar to this plot (see above) of the car’s position (blue, yellow) along with viewing angles from the helicopter (green), derived from the video by magical image analysis (only the first few minutes shown)….
All Adafruit products are designed with CadSoft EAGLE PCB Design Software, Ladyada has made hundreds of designs with EAGLE! We are pleased to now offer licenses to our community & customers for purchase!
1 schematic sheets, 2 signal layers and 100×80 mm routing area 3.9″ x 3.15″
Layout + Schematic + Autorouter
Unlimited license period
Maintenance and support included
It is a single user license that enables all the features of the EAGLE Standard Edition (limited to two signal layers and 100x80mm routing area) with all three modules (Layout+Schematic+Autorouter).
Why CadSoft EAGLE PCB Design Software V6?
Whether you are a team of one, or part of a large engineering department, EAGLE provides quality PCB design software with the features that get the job done. For over 20 years, EAGLE has been satisfying design engineers around the world, by offering the same core functionality as expensive commercial software, at the fraction of the cost.
Export Gerber files that can be used at any board house:
Gerber 274X & Gerber 274D
Excellon NC Drill Format
SM1000 and SM3000
Custom user-defined export formats
Online import of product & pricing information through DesignLink
Active customer forums to share files, libraries ULPs, design tips and more
Parse and paste your data outside of EAGLE (XML datastructure)
With your purchase of a CadSoft EAGLE PCB Design Software license, we will send you a free CadSoft EAGLE – Skill badge, iron-on patch! If you’re interested in open-source PCB design software check out gEDA and KiCAD.
IN STOCK NOW! CadSoft EAGLE Light PCB Design Software V6 is $69 !
Portable, loud, and fashionable. Take a vintage suitcase and install a set of speakers, passive crossovers, an amplifier, and a couple of rechargeable batteries. Now you have a portable, albeit heavy, stereo that will make your ears bleed.
Some people may have known already about the temperature sensor built into the ATMEGA8, 168, 328 series microcontrollers, but the most serious enthusiast would write off the 1°C resolution as just a coarse sensor of no practical use. I would have to say I was part of that group, until I compared the response between the two sensors.
The TI LM35DZ is a simple temperature sensor that has an accuracy of +/-0.5°C at 25°C and with 0.08°C of self heating, this should be sufficient to demonstrate the rough nature of the ATMEGA328′s internal temperature when compared to dedicated external sensor. The TO-92′s have the best Thermal Reponses on the datasheets and are the cheapest. Connection is straight-forward, +5VDC, Vout and Gnd with Vout to the ATMEGA328′s PC0 (Arduino pin A0).
For the ATMEGA328 internal sensor, adjustment of the voltage offset can be used to calibrate to another sensor.