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

Pet Water Surveillance Sytem

It’s a simple pet water system that senses the amount of water in the pet dish and automatically activate a pump to refill it from a reservoir when it gets low, or send a tweet when the reservoir runs out. It’s built around an Arduino and uses just two sensors. With the help of Arduino Ethernet shield, the user can add tweeting capabilities to it. If the pet bowl doesn’t fill up after a set time in the code, due to an empty reservoir or a sensor failure, it will automatically shut off and post an error tweet, so you can hurry home and top off your pet’s tank. For me it seems more fun than useful. There are plenty of self-filling bowls that work simply by water tension. However… Continue reading

Automatic plant watering device

This device may be useful for florists and other who like green environment at home but forget to water them regularly to water them. So why not to automate this process with simple embedded system which controls water pump. Device as design project was developed by student Gang Xie in Stanford University. Device not only waters plant regularly but has a real time clock for exact time counting, LCD which displays time and system states, speaker for alarming, push buttons for changing states and time. Microcontroller controls water pump through relay. Project software is written in AVRGCC C language. Design could be improved by adding humidity of soil reading through ADC channel. Continue reading