Pi-Ener-lite: Compact UPS with Fuel Gauge and RTC for Raspberry Pi Zero
Pi-Ener-lite is a compact UPS for Raspberry Pi Zero with a CW2015 fuel gauge, DS1307 RTC, and 18650 battery support, all connected via spring-loaded pogo pins.
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Hydroponic greenhouse with ESP8266
With hydroponic cultivation we mean a different method of plant growth, in fact instead of the earth there is water with dissolved mineral salts that flows between the roots. In this project we will see how a hydroponic greenhouse controlled by an ESP8266 was built. The system consists of pumps and temperature sensors controlled by…
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Build an alarm clock that asks questions!
Do you usually have trouble getting up? You set a dozen alarms in the morning, but still can’t wake up? In this project we will try to solve the problem in an alternative and quite creative way by building an alarm clock that will ask random questions. It will stop making noise only if the…
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A Smart chicken coop with Arduino Nano alarm system
After losing the chicken due to wildlife intruders, Elbie decides to create a Smart chicken coop with several functions: Opening and closing the door at sunrise and sunset according to local geographic coordinates; Intrusion detectors with flashing LEDs in two positions; LEDs visible from the outside to show the status of the door; Two buttons…
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“REMIND-INO” Vintage Alarm to Remind Stuff for the Elderly
We all know at least one elderly person. Maybe a family member or friend. As they get older, many of them begin to forget things, some as important as taking their medicines. We could be reminding them or we could delegate this task to “Remind-ino”. The project is based on an Arduino Nano which thanks…
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A Nixie style clock but RGB
Nixie valve display watches will have their vintage appeal but we know how delicate they are due to the glass and the high voltage needed to make them turn on. This project makes the Nixie watches more resistant, with a more modern look thanks to the RGB LEDs used to display the digits and which…
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RFID based Attendance system using Arduino and External EEPROM
In this post we are going to learn how to build a RFID based attendance system using Arduino development board, RC522 RFID reader module and external EEPROM. We will take a brief look at RC522 RFID module, external EEPROM and other circuit modules that makes this proposed RFID attendance system work. RFID card based…
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A mechanical clock that tells time using 114 steel balls
Eric Nguyen has come up with a rather unique way of showing hours and minutes: steel balls arranged as seven-segment displays. Every minute, the face rotates down and a series of 28 servos capture and release the balls using magnet and linkage systems. The device is powered by an Arduino Nano along with an RTC…
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DIY Digital Clock Using ATmega328p, RTC DS3231 and Seven Segment Displays
This is an user friendly tiny digital table clock where user can access all basic functions of clocks including setting alarms, viewing temperature, viewing date, setting date and time, etc. It has a buzzer for alarm and four push buttons (Menu, Left, Right, Cancel) for user interaction. It can be powered by a standard…
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Mesmerizing Magnetic Wall Clock
Mechanical clocks have always fascinated me. The way all of the internal gears, springs, and escapements work together to result in a constant reliable timepiece has always seemed out of reach for my limited skill set. Thankfully modern electronics like Arduino and 3D printed parts can bridge the gap to create something simple that…
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Make Your Own Retro Nixie Clock With an RTC!
In this project I will show you how to create a retro nixie clock. That means I will show you how you can control nixie tubes with a high voltage DC power supply and then I will combine 4 nixie tubes with an Arduino, a Real Time Clock (RTC) and a custom 3D printed enclosure…
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Getting Date & Time From NTP Server With ESP8266 NodeMCU
Every once in a while you’ll come across an idea where keeping time a prime concern. For example, imagine a relay that has to be activated at a certain time or a data logger that has to store values at precise intervals. The first thing that comes in your mind is to use…
