Tag Archives: Water

Automatic plant watering system using AVR(Atmega16) Microcontroller


Here’s an automatic watering system using AVR from Gadgetronicx:

Primitive irrigation systems possess many drawbacks as it fails to conserve water and human energy. So introducing Automation in it can help us to overcome these drawbacks and pave way to conserve water. This can be done with a simple Soil moisture sensor and a Microcontroller, AVR in our case. You can try out this system to automate watering the plants in your home at affordable cost.


Automatic plant watering system using AVR(Atmega16) Microcontroller – [Link]

Water Softener LED Display


by robotroom.com:

Many homes in the United States have water that contains higher concentrations of dissolved minerals, which is called hard water. Although there is nothing toxic about hard water, it is less desirable for cleaning, it leaves mineral deposits, and it can shorten the lifetime or efficiency of equipment such as water heaters.

A water softener is a household appliance that commonly exchanges salt for some of the dissolved minerals, resulting in softer water. The salt supply is stored in a brine tank and must be refilled every month or so. If you forget to refill the tank, the water softener is rendered temporarily ineffective.

Water Softener LED Display – [Link]

Water level controller using arduino


praveen @ circuitstoday.com writes:

This article is a about a fully functional water level controller using Arduino. The circuit displays the level of water in the tank and switches the motor ON when the water level goes below a predetermined level. The circuit automatically switches the motor OFF when the tank is full. The water level and other important data are displayed on a 16×2 LCD display. The circuit also monitors the level of water in the sump tank (source tank). If the level in side the sump tank is low, the motor will not be switched ON and this protects the motor from dry running. A beep sound is generated when the level in the sump tank is low or if there is any fault with the sensors.

Water level controller using arduino – [Link]

DIY automatic water timer


Kyle wrote an article detailing his DIY automatic water timer:

Now that I have power and output figured out, I need to work on the control aspect. 555 timers are great for simple applications requiring up to a few minutes of delay. At 10 minutes, the RC values needed would boarder the danger zone of the timer not functioning correctly due to the leakage current of the capacitor and the small charge current of the resistor. I could have cascaded two or more timers together but that would be sloppy so I fell back on my trusty friend – the ATtiny micro controller. This would allow me to make changes as I want without redesigning the board.


DIY automatic water timer – [Link]

Water Level Alarm


Water Level Alarm is a simple project to detect and alarm once the water level in tank or Aquarium reaches at certain level. Circuit is based on popular NPN transistor BC547 which act as switch, Sensor also made on PCB, when the water reaches the sensor PCB, base of transistor connected to positive supply, in consequence transistor act as switch and activate the buzzer.

Water Level Alarm – [Link]

Shower Monitor Arduino with LCD display


singingshark @ instructables.com writes:

Welcome! For our Environmental Capstone class (senior thesis) for St. Olaf College we built a monitor that would effectively monitor how much water a shower uses. For our project we made four different monitors using the same process. This instructable is written as if you were to make a single water monitor. […]

Shower Monitor Arduino with LCD display – [Link]

SousVide-O-Mator Schematic and Discussion

Stian wrote up a great post on his own blog explaining how his project works and how you can build your own control hardware. He writes: [via]

A professional sous vide setup costs at least >$1000, so it’s a bit out of reach for the normal home cook – except for the DIYers.. It’s not that hard to build yourself if you put your mind to it. What you need is the following components: Water bath with a electric heater.

  1. Some method of circulating the water.
  2. A way of accurately regulate the heater based on water temperature
  3. Some way of plastic bag packing you meat.

Water bath with heater is easy enough, there are tons of items out there that does this – slow cookers and rice cookers for example. I use a simple rice cooker, the cheaper/simpler the better (we’re going to cycle it’s power on/off, a dumb cooker will behave better facing a power loss). To circulate the water I use a simple ebay aquarium pump (payed $9.90 for mine). To pack the meat in airtight bags you can either buy a cheap vacuum-packer or simply use zip-lock bags (fill your sink with water, add meat to bag, submerge bag in water but keep the opening above waterlevel – pressure from the water will press out all the air, seal the bag..)

SousVide-O-Mator Schematic and Discussion – [Link]

Smarter Water Heater Timer

In Los Angeles, we have the “Time-of-Use Program” option from the power company. From their FAQ:

The prices are based on the time of day when the electricity is actually used, unlike the standard rate when the price for electricity is always the same.
A higher price is charged during “high peak