When you are on vacation your animals still need water. That’s the premise of this Automatic Pet Water Bowl Filler project by ihmech. It monitors the level of the water in the pet water bowl and opens the water valve to fill it whenever it detects that it’s low. There are lots of safety features to prevent the system from flooding the basement. The simple solution of installing a float
With Halloween right around the corner cutting foam to make things like fake tombstones is something some of us will be thinking about. There are lots of ways to get the job done, you could use the standard utility knife or make a wire cutting CNC machine. But with a bit of time and a few dollars of parts (or possible no cost in parts based on the size of
Are your hands cramping after playing your favorite game on your Game Boy Advance? Have a look at this Game Boy Advance Rapid Fire Hack by the Hackers Workbench to give your fingers a break. This circuit will simulate you tapping the B button for all you’re worth. The other nice thing about the design is since there only a few components you can just dead bug it right inside
Over at Karosium there is a DIY DS1821 based Thermostat project. The code is available and I am assuming if there are some requests that the schematic will also be posted. “After configuration for thermostat mode the center (1Wire DQ) pin becomes a thermostat output pin. Since it’s still an open collector pin it needs a pull up resistor, and since it’s still basically a 4mA GPIO a transistor at
Rustic Engineering has some good posts about the GUI Bot build, it’s a robot that is based on the PIC18F452 microcontroller. The robot looks great with two large drive wheels and one coaster wheel under the front. You can also find a large writeup of the project over at Lets Make Robots. “Feature List Move, turn and gyro with speed and agility; Speed up and Stop when you need; Generates
David from uC Hobby had a wireless doorbell but the remote was lost, instead of tossing it in the garbage he re-purposed it. By adding a few components to allow a small signal to activate the chime coil this can now be used by almost anything electronic as a cool indication. I would have used it to ding dong when I had a new email but David decided to hook
Keith Baxter from the The Milwaukee Servoelectric Guitar Project sent in the cool progress he is making on the Single String Servo Guitar project. You probably remember Keith from the original Servo Guitar that we featured last year. There is something haunting and pleasant sounding with this new single string guitar, I wonder if Keith could rig something up so that it could pick the string and control the servo
