A time has come for me to say ‘hello’ to the mid-XX century technology of Neon numerical displays, also known as Nixie tubes. Despite being quite hard to obtain and utilize I’ve decided to make a nice looking clock which (hopefully) would make a perfect Christmas present, and since the Christmas is all about sharing …
In this instructable you’ll learn how to use a rotary encoder (see http://en.wikipedia.org/wiki/Rotary_encoder ) with a microcontroller and how to display the numeric value as a bar and a numeric value on an OLED display. See the video below for the project …
Using a Quadrature Encoder With an ATtiny 2313 and an OLED Display Read More »
While I waited for the Mini 7-Segment Clock v3 PCBs to arrive, I got to work on designing an enclosure. First, I exported the PCB from EAGLE to Sketch Up. I then assembled a complete 3D model with all the necessary components. With the 3D model complete, I could then design an enclosure to house …
The time keeping is provided by DS3231 RTC chip with an integrated high accuracy (± 5ppm) MEMS crystal. This makes PCB design very simple, as one does not need to take care on special traces design around the crystal. The chip is powered via the VBAT pin with VCC pin being grounded. This way its …
Based on the Atmel ATtiny12L-4PI microcontroller -A real Time Clock/Calendar for less than US$1.50 in moderate quantity. This is the timekeeping test circuit. It includes a one-transistor circuit to switch in the 5V power supply when present and drop back to the 3v battery the rest of the time. That loop of blue wire-wrapping wire …
There is no need for a wordy introduction to I2C protocol. We all know it’s main parts – 2 wires, multiple slaves, sometimes multiple masters, up to 5MHz of speed. Often so have we all implemented an I2C connection. Still, every now and then, there’s that module that just won’t work. This time, we will do …
ESP8266 LED Matrix Clock Simple LED matrix Clock based on the popular ESP8266 with Real Time Clock module and time synchronization over Wi-Fi from an NTP server. Step 1: Parts and Tools First let’s see what we need. Parts: 6 x 8×8 MAX7219 LED Matrix 1 x RTC DS3231 1 x ESP12 Board 1 …
Unipolar stepper motor driver can drive unipolar motor up to 3.5A and supply range 10 To 50V DC. The board has been designed using STK672-442AEN IC. The STK672-442AN is a hybrid IC for use as a unipolar, 2-phase stepper motor driver with PWM current control and Micro-stepping. Features Supply Up to 50V DC Input …
First, let me introduce you my project. I made an Alarm clock with extended functionality & thermometer and humidity meter. Everything started when my friend (who used to bring me some old electronic rubbish and I used to check if there’s not something useful) brought me some cashing register display similar like that. When I …
With a controller and a seven segment display, showing the time is not a so special feature, but when this clock can listen to the user and do what they want, that’s what worth highlighting a “Time Machine”. Analyzing human voice and take action based on that is not so simple. That’s why using a …
Time Machine – A Smart Clock That Does What You Say Using Alexa Voice Service Read More »
