Boris Landoni over at Open Electronics writes, “We use the platform based on the AMS sensors in combination with the Personal Computer and thanks to an ad hoc software we trace on the screen the spectrum curves resulting from the analysis performed.”
More info on Open Source Project page.
Dilshan Jayakody published a new build:
This project is about an open source, USB based, 10 digit seven segment display unit. This unit is specifically designed to work with POS systems and banking applications. Initially, this system is developed to work with PC based systems, and later it was modified to work with other platforms and applications.
See the full post on his blog.
A team of student designers and engineers from the RCA and Imperial College have developed a substitute for GPS that does not rely on satellites, called Aweigh:
Aweigh is an open navigation system that does not rely on satellites: it is inspired by the mapping of celestial bodies and the polarized vision of insects. Ancient seafarers and desert ants alike use universally accessible skylight to organize, orient, and place themselves in the world. Aweigh is a project that learns from the past and from the microscopic to re-position individuals in the contemporary technological landscape.
Via Open Electronics.
Check out the video after the break.
Boris Landoni writes about a new open source project, the miniduino USB:
A small Arduino board with minimal hardware but with access to all I/Os, just like the Nano and equipped with PCB-integrated, direct-insertion USB connector: it is basically an Arduino Pen Drive.
More details on Open Electronics project page.
An open source battery switch project from Open Electronics:
Given two batteries, it chooses the one to connect to the load based on the voltage measured at their poles. It can also be used to switch DC power supplies.
More details at open-electronics.org.
Bdring published a new build:
I have done several pen and laser machines lately, so I decided to create a custom PCB for Grbl_ESP32 for these types of machines. This is a small (70mm x 60mm) PCB with all the features a pen plotter or laser cutter/engraver would need.
These typically use stepper motors for the X and Y axes. On pen plotters, the Z axis is controlled by a servo or solenoid. On lasers you need an accurate PWM for laser power control.
Project info at Buildlog.Net blog and the library GitHub repository here. It’s also up on Tindie.
Jean-Marc Valin has been working on Neural Network (NN) based speech synthesis in his project called LPCNet:
This new demo presents LPCNet, an architecture that combines signal processing and deep learning to improve the efficiency of neural speech synthesis. Neural speech synthesis models like WaveNet have recently demonstrated impressive speech synthesis quality. Unfortunately, their computational complexity has made them hard to use in real-time, especially on phones. As was the case in the RNNoise project, one solution is to use a combination of deep learning and digital signal processing (DSP) techniques. This demo explains the motivations for LPCNet, shows what it can achieve, and explores its possible applications
A simple VOR receiver for Airspy and RTL-SDR called Vortrack by Thierry Leconte, that is available on GitHub:
In the past we’ve seen several other posts about RTL-SDRs being used to decode VOR signals, but Thierry’s implementation appears to be the easiest way to get a bearing straight away. You’ll get the most use out of the software if you install it on a portable device like a Raspberry Pi and take it out for a drive as you’ll be able to see the VOR angle changing then.
A board to control your CNC machine with Grbl_ESP32 designed by Bart Dring, that is available on GitHub:
This is a Grbl_ESP32 CNC Development board. This is a quick and easy way to use and test CNC on the ESP32 controller.
Grbl is a great CNC firmware that has been around for nearly a decade. It was originally designed for the Arduino UNO and basic 3 axis CNC routers, but it has been ported to other CPUs and was the basis for many other CNC and 3D printer firmwares.
The firmware was written using the Arduino IDE to make it as user friendly as possible. If you have experience with Arduinos, this will not be much different.
Project info at Buildlog.Net Blog. It’s also up on Tindie.
Jason has designed a development board for USB-C and Power Delivery, that is available on GitHub:
The USB-C Explorer is a development board with everything needed to start working with USB Type-C. It contains a USB-C port controller and Power Delivery PHY chip, a microcontroller, and several options for user interaction.
Project info on Reclaimer Labs blog. It’s also up on Tindie.