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

Pocket size Lux meter

Who are dealing with photography probably know what is Lux meter. Simply speaking Lux meter measures illumination what means light power falling on a surface area. There is whole physics about illumination and light energy. Simply speaking Lux  is well fit to light level from sense of human eye. Lux meter uses a photo diode to sense light power. Diodes current is then converted to voltage which is calibrated by opamp. Then voltage is read by ATtiny26 ADC converter. And then Lux value is displayed on 7 segment LED display. Due to ADC range device is capable to measure up to 30000lux. Firmware is available for download. Continue reading