Pet-squirting waterwall

waterwall

Sometimes, pets need to be trained to stay away from certain things. Over at sump.org, his cats needed to be kept out of his room. He used their natural fear of water by creating the waterwall, a motion-sensing device that sprays water. The project is incredibly simple and uses very few components. It is based around an IR intrusion … Read the rest

Greenhouse guard

pid

[Seth King] sent in his latest hack where he used an Arduino to regulate various aspects of a greenhouse. He has sensors for soil and air temperature as well as light and moisture. He built a custom circuit that uses relays to power fans, lights, and heaters. Using timers and the sensor data, the devices can be triggered to … Read the rest

NES workbench

[Miltron] dropped us a tip about his NES workbench.  Knowing that when you get frustrated with whatever project you are beating your head against, you need an outlet, [Miltron] decided to build some relaxing NES fun into his workbench.  He’s using a NES on a chip though any multi game-in-a-controller setup should work. He has gutted a PSone LCD … Read the rest

Adding RDS decoding to a vintage radio

c_670_rds4_sm2 (Custom)

[Edo] wrote in to show us how he added RDS decoding to a radio made in 1957. RDS or Radio Data System is a protocol for data transmission. This allows date, time, artist info, and more to be broadcast along with the music. Its a nice feature that many new cars come with from the factory. [Edo] wanted to … Read the rest