Circuit Lake

SmartProbe is simple low cost moisture and temperature alarm system for plants. Insert it in the plant's root system and it measures the moisture and temperature. It sounds an alarm if the moisture or temperature goes out of preset limits. Shut it off with a gentle tap or knock on it to ask it the current status. Temperature, moisture and battery status is indicated by tone sequences. It won't disturb your sleep at night for it monitors light. It also warns you when the battery is getting low.This R8C/13-based device ...

Mobile phones have become an ubiquitous gadget used worldwide. Despite this, there are a number of different communication technologies and the GSM (Global System for Mobile Communications) standard has emerged as a rising star. Used mainly in Europe, it is also gaining ground in different Asian and American countries.A differentiation feature of the GSM phones is the built-in socket for a smart card called SIM. SIM stands for Subscriber Identity Module and is used mainly for authenticating the user to the network during phone startup.Due to the security features of ...

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 ...