Johan @ johan.kanflo.com build his own Wifi webcam combining an Arducam Mini and a ESP8266 Wifi module. The result is the Esparducam board!
Sometime ago I came across the Arducam Mini which is quite a nice camera module from UCTronics. It is a small PCB with a two megapixel OmniVision OV2640 sensor, an interchangeable lens and an FPGA to do the heavy lifting of image processing and JPEG encoding.
Building a low cost wifi camera – [Link]
MichielD99, a 16 year old Belgian teenage maker build this amazing laser engraver using Arduino UNO, two NEMA-17 stepper motors and stepper motor drivers.
This laser engraver uses a 1.8W 445nm laser module, of course, this is nothing compared to the industrial laser cutters who use lasers of (a lot) more than 50W. But this laser will do well for us. It can cut through paper and cardboard and it can engrave all kinds of wood. I haven’t tested other materials yet, but I’m sure it can engrave many other materials. l will let you know! It has a large engraving surface of about 500x380mm.
Arduino-Powered Laser Engraver – [Link]
KF5OBS @ jaunty-electronics.com shows us how to build a minimalistic GPS datalogger. The GPS logger is based on the Arduino platform and stores raw NMEA sentences from pretty much any GPS module to a SD card.
For a project I needed to log GPS information. I had various GPS modules and plenty of Arduinos laying around the lab. At first I intended for the Arduino to capture data from the GPS module, process it and then store it onto a SD card. However, I discarded that idea in favor of more flexibility and now use the arduino merely as pass-thru device for the raw GPS data.
Simple Arduino SD-Card GPS/NMEA Datalogger – [Link]
Mike @ jaxcoder.com has published a Beta version of his Electronics Parts Inventory System for Windows OS:
The Windows Hobbyist Electronic Inventory System or WinHesit is an electronics component organizer on steroids that was developed with the electronic hobbyist in mind. Designed to be light weight, responsive and most of all easy to use it also allows a lot of information to be optionally entered for those that need to store more data that is to be associated with the component.
WinHeist can be used right out of the box or customized to work the way you work. A database of common parts is provided to get you started but configuring the application to your specifications is easy and once configured the settings can be saved so that all future DBs can use the same settings.
Hobbyist Electronic Inventory SysTem – [Link]
TSalwach @ github.com build a 3-phase home power meter system. A STM32F072RB MCU on Nucleo evaluation board make measurements and Raspberry Pi 1 collects data and share via web interface.
I want to have real time power measurement of my home in my smartphone. I’ve got one some long time ago, it was counting time between pulses on energy meter. It was sufficient, but when I upgraded my home to three phase AC I thought it would be nice to have some new gadget, so I’ve built one.
Home energy monitoring using Nucleo and Raspberry Pi – [Link]
555 DC Motor Speed Controller project will control the speed of a DC motor connected to it. This project is built using the popular 555 timer IC.
- Power supply input 5-12V DC
- Motor Load Up to 1 to 2Amps
- Onboard preset to vary Duty Cycle from 10% to 95% @ 120 Hz
- Ideal for mini drill and robotics application
- Transistor based output drive with heat-sink
- Diode protection for motor surge
- Power-On LED indicator
- Screw terminal connector for easy power supply input and output-Motor connection
- Four mounting holes of 3.2 mm each
- PCB dimensions 47 mm x 56 mm
555 Based DC Motor Speed Controller – [Link]
Jimb0 @ sparkfun.com takes a first look on the new ESP32 WiFi board by Espressif that’s an improvement of the ESP8266 board.
The ESP32 doesn’t replace the ESP8266, but it does improve on it in every aspect. Not only does it have WiFi support, but it also features a Bluetooth 4.2 radio, making it even more versatile. The CPU is similar to the ESP8266 – it’s a 32-bit Xtensa® LX6, but the ESP32 has two cores! There’s also 128KB of ROM and 416KB SRAM, but Flash memory (for program and data storage) is still left up to an external chip (up to 64MB).
Sparkfun: First Impressions of the ESP32 – [Link]
A new board that aims to fill an education gap for programmable boards is on kickstarter. SCIO enables anyone, without the need of previous experience, to experiment with electronics and coding and build various projects based on onboard sensors, work on the cloud, make light shows and even more.
Within an hour of opening the box, someone who previously knew nothing about computers, programming and “boards,” can write programs that explore, educate, and entertain.
When someone buys a Raspberry Pi or Arduino without any prior programming experience, this person often reports being lost because they do not have the technical skills to use it. The information available for programming and using these devices is often difficult to understand for beginners.
SCIO: The Fun New Way To Learn Coding, Computers and STEM – [Link]
A team of scientists at Oxford Eye Hospital aim to create a bionic eye, that will make people who lost their sight to see again. A special chip is placed behind the retina and a small processor sends signal to the optic nerve and brain process it thus enabling the person in treatment to see.
In Lewis’ case, after just two days of tests, she was able to make out basic shapes and see outside for the first time in over a decade.
It helped that in her case, Lewis’ optic nerve was still intact. But it still took some time for her brain to adjust to actually seeing for the first time in years. The first test was to see blinking lights on a computer screen, which she passed with ease. But when it came to discerning a white plate on a black table cloth, not so much. Trying to not feel overly defeated, Lewis came back the next day and was able to make out the shape, and more.
A new form of retina implant returns sight to the blind – [Link]