Turn-key PCB assembly services in prototype quantities or low-volume to mid-volume production runs

Bringing emotions from outside with LUZ ring-light

Color and light can have a significant effect on human emotion. They can be used to set romantic feel with warm reddish light, or refresh when blue light is used. Following project seems to be really interesting and very useful in some areas. It is called Global Emotional Lighting. The idea was to build a lighting ring, that would bring emotions from outside weather conditions. One good use for this is in areas, where people lack of sunlight. For instance who are sick, or simply must work indoors all day. Technically speaking, this project is built around Arduino which takes measurements from outside with light and temperature color sensor (Adafruit TCS34725). Then this captured data is reflected on RGB LED stripe ring. The ring and sensors can be located in different places, because they communicate through RF interface. As you can see in video this work is really scientific and really well polished so everyone could enjoy the result. Continue reading

Simple technique of sensing colors using Arduino

Color sensing may seem pretty complex task, but in reality you can experiment with this using three LEDs and LDR. ZXLee built a simple sensor for Arduino which allows him to detect colors. The idea lies behind using red, green, blue LEDs and Light Dependent Resistor (LDR). He shines with each led on measured surface and then captures LDR values. With some calculus he was able to recreate color with another RGB LED. You can think, where suck color picker could be used. One of fun devices could be real world color picker. Designers should find it useful where color can be simple picked from surface and added to sketch if needed. This is great example that not everything has to be complex and expensive. Anyway if you are looking for precise measurements you should look for professional grade tools. From my point of view sensor could be improved a little bit. Sensor could have cover to avoid ambient light on measured surface. But there is always something to improve. Continue reading

Smart AVR based color sensor

avr based rgb color sensor

If you ever used image editing software, you probably tried color picker tool. It allows pointing to any place (pixel) of image or digital photo and it returns its RGB value. This is handy way of determining digital color value. Well this is easy when you have image stored in computer. But what about real world objects. How can we pick the color? You can get RGB values by taking photos and then using software packages like GIMP to find its RGB value. Or you can try building a color sensor circuit that would allow pick colors by putting it close to color object and pick its color. Sounds cool, isn’t it? As matter of fact the science behind such device is simple, and everyone can build it with few cheap components. It won’t guarantee very accurate results, but they should be close enough. So janw decided to build a standalone color sensor that would output its RGB value via serial interface. So his device was intended to be universal and compact solution which could be integrated in to any… Continue reading