Circuit Lake » Monitoring

High Performance Remote Terminal Unit

admin — Fri, 06 Jan 2012 01:36:24 +0000

This project shows how to create a Renesas M16C62P-based small Remote Terminal Unit (RTU) that implements a Host communication protocol (MODBUS RTU), a smart instrumentation communication protocol Highway Addressable Remote Transducer (HART) and few digital and analog inputs and outputs. Remote Terminal Units (RTU) are frequently used for process control and monitoring. The market for [...]

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Soil Moisture and Temperature Alarm for Gardener

admin — Sat, 31 Dec 2011 01:38:10 +0000

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 [...]

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PetInspect, Wearable Data Logger for Pet

admin — Sun, 25 Dec 2011 01:17:15 +0000

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 [...]

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Pressure Canning Process Controller

admin — Mon, 19 Dec 2011 00:40:04 +0000

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 [...]

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Infinity Bug Device

admin — Sat, 03 Dec 2011 02:08:14 +0000

The infinity bug is connected across the phone-line of a distant phone in parallel mode. It uses surface-mount resistors, capacitors, transistors and diodes. It gets operating current from the phone line (leech device), no external power supply is required.To use the Bug, the distant phone is rung. After having a conversation with the person at [...]

Simple Automatic Battery Discharge Analyzer

admin — Sat, 29 Oct 2011 01:10:27 +0000

The project allows you to analyze characteristics of unknown/junk battery especially the capacity and variation of the voltage on discharge. It is controlled with a PC via a serial port. No external power supply is required because it is powered by RS-232C signals. It uses ATmega48 as main controller for dummy load and constant current [...]

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Arduino Project: Send Data from Website to LCD

admin — Wed, 07 Sep 2011 22:01:35 +0000

This project turns Arduino into basic web server which is hooked up to the LCD. You can enter text strings via web page and display them on LCD attached to Arduino. On the simple HTML web page, you will also see what text is currently displayed on the LCD. For further project, you can develop [...]

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