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

Controlling AC and blinds with Raspberry Pi

If anything can be automated then it should be. Chris has an AC which has to be turned ON and OFF with remote. Also he finds annoying task to roll the blinds by tugging a chord. So he found a better solution to get rid of those periodic tasks. Luckily AC and blinds are close to each other, so he put a Raspberry Pi which is connected wirelessly to network. In order to control blinds, he used a stepper motor attached to roller shaft. Motor is driven by using easystepper motor driver. Since Air Conditioner is controller with remote. He attached IR diode and IR receiver to Raspberry Pi. Receiver is used to record IR signal from original remote in raw format. Then signal is transmitter through IR diode when… Continue reading

Make deep focused macro images with Raspberry Pi

Deep focused macro image

If you ever tried to make macro photography you noticed that it is hard to focus 3D objects. Only at some depth you get clear view where other areas stay blurred. Of course there are expensive equipment available that helps expand field of depth, but who would want to spend money for non professional purposes. David found another solution to solve this problem. And this only cost a Raspberry Pi. His experiment consists of camera, old flatbed camera and Raspberry Pi. So he took scanner top and placed camera on a rail so it could move along. Connected RasPi to motor through stepper motor driver using four GPIO pins. Another pin he used to control camera shutter. The rest secret lies in Python script where wiringpi library is used to… Continue reading