Startup company Aquion Energy gave MIT Technology Review a behind-the-scenes look at their battery manufacturing process. The company’s goal is to make non-toxic, cheap batteries for storing off-grid energy. The batteries will first be sold in regions that don’t have access to an electrical grid, such as rural areas and villages in poor countries.
How to Make a Cheap Battery for Storing Solar Power - [Link]
Switching of three-phase motors or a realization of a sophisticated installation is a breeze with industrial relays Finder.
As we know, a relay is a very versatile component, able to realize also various “sequential” circuits, when for example by switching one relay we´ll switch on a target device and at the same time we´ll enable (or disable) switching of another relay. In these case, it´s an often demand for a relay to have a sufficient number of poles. Majority of such “logic” circuits can be realized even with a common 1-2 pole relays, but it´s not always economical and it also brings another costs for solution of supplying and protection of logic circuits.
- Finder 55 – miniature industrial relay for a PCB or for socket, 2-4 poles, 7-10A (switching current up to 20A), 250/400VAC,
- Finder 60 – a more robust industrial relay for a socket, 2-3 poles, 10A (switching current up to 20A), 250/400VAC,
In the series 55 can be found types which can be soldered directly into a PCB (without a socket) or to insert into some of many available sockets (for PCB, with soldering pins or on a DIN rail). Types from series 60 need to be inserted into a socket (for PCB, with soldering pins or on a DIN rail). Naturally, for eventual repair/maintanance, it´s much better to use a socket. Sockets can be equipped with metal or a plastic clip. Also exists a socket 94.94.3 with a safety separation of an input and output part. Similarly like at majority of Finder types, sockets can be equipped with optional protection and indication modules. Read the rest of this entry »
A website that overlaps a photo of the Arduino UNO board, with the name and the goal of a component when you move your mouse over this component.
ArduMap – Arduino mouse over map - [Link]
The Arachnoid Mobile Platform is an open source robotics development platform used to make small autonomous moving robots. It can be either configured as a four-legged robot, or as a two wheeled robot. The PCB board holds all the electronics and mechanical components, and also serves as the chassis of the robot.
AMP – Arachnoid Mobile Platform - [Link]
Heptagon Micro Optics Pte. Ltd. (Singapore) has announced that their 2 by 2 3D imaging system for use in smartphones, phablet and tablet computers is now ready for mass production. The TrueD H2 array camera is said to be the first in a series of 3D imaging and depth-sensing cameras that Heptagon will be introducing to the market.
Heptagon’s manufacturing processes enable the system aperture; stray light control and infrared cut filter to be integrated onto a single glass wafer. The assembly can withstand reflow temperatures and its no-focus lens eliminates the need to refocus after assembly. As well as grabbing the image the array camera captures short-range depth information that can be used for gesture and user recognition and allows background removal and image enhancement. Although this feature would typically be useful on a smart device’s front-facing camera, Heptagon state that it could also be used to complement the smart device’s primary high resolution image sensor. Applications include supporting 3D and immersive mobile video games as well as augmented reality overlays. [via]
Heptagon announce 3D Array Camera - [Link]
This soldering station controls a 24v 50W solder. Based on ATmega328p microcontroller, with combination of IRL3103 or IRFZ44 MOSFET, 5v 0.5A and 24v 3A power supplies,1500uF 35v capacitor, DS1307 – Real Time Clock, MAX7219 – 4 digit 7 segment LED driver, LEDs and other electronic components. Hakko 936 soldering iron handle with thermocouple control. A LM358 amplifies signal from thermocouple with gain 101.
DIY Soldering Station - [Link]
Lonnie Honeycutt writes:
This is the Nokia 5110 84X48 display that was used on millions of phones in the late 90′s. In this video, I show how to connect the Nokia 5110 LCD to an Arduino Uno, import the correct libraries to the Arduino IDE, and write code to generate text and graphics on the display.
How to use the Nokia 5110 84X48 LCD display with Arduino - [Link]
000Plasma000 @ youtube writes:
Working on a project where you need to display something (like data/debugging info)? Why not use an LCD! In this video, I go through various aspects of controlling the device with an Arduino, including setting different types of cursors, toggling the display and even creating custom characters!
How to Control LCD Displays – Arduino Tutorial - [Link]
svkatz80 @ fritzing.org build a nice LED clock. He writes:
This clock is based on ATmega328p microcontroller, with combination of DS1307 – Real Time Clock, MAX7219 – 64 LEDs drivers, 74HC595 – shift registers, DS18B20 – temperature sensor, GL5528 – photoresistor, LEDs and other electronic components.
- Clock with RGB seconds — Four 74HC595 control 10 RGB leds. But TLC5940 is a better choice.
- Ellipse clock — Three MAX7219 control all LEDs. No shift registers needed.
Each MAX7219 can control 64 LEDs. For ellipse clock I used tree of them. The first one controls 2 hour’s digits (2x7x4=56 green leds + 6 blue leds + 2 dots between hours and minutes ). The second one controls 2 minute’s digits (2x7x4=56 green leds + 6 blue leds). The third MAX7219 controls second’s 60 red leds .
For making a 7 segment digits, I used 5×7 cm prototype PCB circuit board. Before solder the LEDs, I wired the board for 4 digits and 7 segments each of four boards with copper wire. See circuit.
As a main board I used a coroplast (polygal) sheet. Just print the sketch and make on polygal holes with a needle for LEDs.
ATmega328p based LED wall clock - [Link]
Illuminated push-buttons represent a universal solution into every environment.
An answer to a question, whether it´s nicer to use a push-button with a backlight or not is perhaps a fully subjective matter. However besides an aesthetic point of view we know about at least two main reasons to use an illuminated push-button: easier orientation/ operation in a dark environment and an indication of a push-button status (activation of a given function).
So if we´ll decide for an illuminated push-button, it´s certainly beneficial to have a possibility to choose from a wide range of types and caps. In our offer can be found the best from this segment – components from a Danish MEC with over 70 years experience in production of push-buttons and switches.
Basic production portfolio of MEC switches can be divided into series „3“, „4“ and „5“. Seriesa „5“ i.e. for example 5G or 5E is the newest and the most perspective series, but also the “2” or “4” series are still popular. Types like 4FTH922 or 5GTH9358222 (4ATH98222) represent a ready-made solution with an LED. It´s also worth to mention a universal type 3FTL6, This type has besides a reliability, pleasant actuation and a crisp sound at switching yet one positive fature – it can be equipped with any 3mm LED. All that is necessary is to form leads into a required shape and apply a suitable cap. Perhaps the biggest advantage of this solution is a possibility to use a whatever LED according to your choice and this way to make a customized push-button (especially in smaller production batches). Naturally, at bigger production batches it´s possible to agree with a producer a production of various customized versions.
The most suitable type for your application can be easily chosen in the MEC catalogue (11MB).
MEC push-buttons can be found even in the dark - [Link]