Circuit Lake

PetInspect is a sophisticated data-logger and wireless communications device that lets you discover what environment your pet experiences and how they behave while you’re not around. The device consists of a 16-bit microcontroller with 256K of flash memory and sensors for pressure, temperature, activity, light and proximity. The digital transceiver provides communication with a range of up to 30m. All this comes in a package 28mm in diameter, including batteries. It’s small enough and light enough for a cat to wear comfortably.This animal tracker project comprises two circular PCBs. If ...

Weasure is M16C/62P-based system that can weigh and measure packages for shipment. Simply place the package on it and both the weight and dimensions are instantly displayed on LCD. If user connects the device to a PC’s serial port using RS232, then the data is uploaded directly to the PC, where a shipping application can send the measurements directly to the shipping company’s web site, further streamlining the process.The project uses modified existing postal scale, DigiWeigh DW-36XP. The measuring component of the scale is a strain gage. This is a ...

The project converts a stovetop pressure cooker/canner into a fully automated pressure processing system with the addition of a few inexpensive components. It can accurately monitors and controls the pressuring process.Using a Renesas M16C microcontroller, the system can control the entire process using an ordinary off-the-shelf pressure cooker/canner and portable electric coil burner. Once the process has been setup, this controller allows you to walk away from the burner and return when the jars have been sealed. The entire canning process has been simplified with the addition of this controller. ...

The project aim is to build a quadrotor helicopter flies with 4 spinning propellers on a + shaped frame. It uses four brushless motors. Each motor will be controlled by an ESC (Electronic Speed Controller). The ESCs will be controlled by the microcontroller. This microcontroller will also take input from a RC radio receiver, so you can control the helicopter from the ground using a RC radio transmitter. A lithium polymer battery is used to power the project.When one rotor spins faster than the rotor on the opposing side, the ...