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This recently posted instructable describes a home electricity monitor with Cloud support that saves the measurements into a Google Drive spreadsheet. The project uses Arduino Yun microcontroller board along with a current transformer for sensing current in the mains live wire. The power monitoring is wireless through Wifi, allowing continuous monitoring from a PC or phone and permanent storage on the Cloud.
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Sulphation is a common problem in lead-acid batteries which usually happens when the battery remains idle for a long period. The sulphuric acid inside the battery react with the electrodes to form sulphate crystals that eventually deposit on the electrodes resulting into sufficient reduction in the efficiency. It has been found from research that the deposited layer of sulphate crystals may be broken down by applying high current pulses to the terminals of the battery. This instructabledescribes a desulfator circuit using 555 timer IC to reverse this process and rejuvenate the battery to like new condition.
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Home automation is getting increasingly popular these days mainly due to reduced cost and simplicity through web or smartphone connectivity. Here’s a DIY version of web-based home automation controller that allows you to have a set of six relays connected to the end of a piece of Ethernet cable that can be accessed from a web browser anywhere from your house. You can use it to control or program the operation of lights, water pumps, or any other electrical appliances at home. The project uses Arduino (Atmega328) microcontroller and the ENC28J60 ethernet controller chipset.
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Forgetting to take a medication is a common problem in older people. This instructable describes how to make a pill reminder, dispenser, and logger to ensure that your dear ones are taking their medications on time. It uses a Parallax Propeller micro-controller at its heart and keep track of when a patient should take their medications. It displays a count down timer one hour before dosage time and then when the time arrives, it generates audible messages, LED 7 Segment messages and lights an LED under the correct compartment to be opened. When the patient opens a compartment, a sensor
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A couple years ago I posted a very simple IR remote control switch for an electrical appliance, that can be turned on and off through any TV remote. Here’s a more advanced one that offers four relay switch control through NEC IR protocol using PIC12F675 microcontroller.
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