This is an interesting project in which we explore the power of an Arduino and Android to create a Surveillance device which uses Arduino and Ultra Sonic Sensor to broadcast the information to a mobile application (Android) using Bluetooth. Safety and Security has been our primary concern since ages. Installing a security camera that has […]
Arduino Radar System using Processing Android App and Ultrasonic Sensor Read More »
Accelerating data rates, greater design complexity, standards requirements, and shorter cycle times put greater demand on design engineers to debug complex signal integrity issues as early as possible. Because today’s serial data links operate at gigahertz transmission frequencies, a host of variables can affect the integrity of signals, including transmission-line effects, impedance mismatches, signal routing,
Eye Diagram Basics: Reading and applying eye diagrams Read More »
This tiny Unipolar stepper motor driver has been designed around SLA7078MPR IC from Sanken, It is unipolar stepper Motor driver can handle current up to 3 Amps, micro-stepping up to 1/16 steps. On-board Jumpers to set the Micro-stepping, Preset (Potentiometer) to set the current. The SLA7070MPR series motor driver ICs features unipolar drivers. The clock-in
3A Unipolar Stepper Motor Driver Read More »
First Hello instructables. This is my first contact with : Instructables Arduino Programmable LED’s So please don’t trow rocks at me for noobish mistakes. Keeping that in mind I’m waiting to read your comments with grate interest and I’m open to any suggestion Features : big digits ( each digit is approximately the size of
Arduino LED Wall clock using WS2811 Read More »
REQUIREMENT: WiFi Access with SSID and password if necessary So this Lazy Old Geek (LOG) has a couple of clocks in my bedroom. One of them loses time when the power is lost. The other is semi smart and automatically adjusts for Daylight Savings Time. Unfortunately, it does this using the old standard so I
IP Time Clock using NTP protocol Read More »
Hey folks! After making an Arduino smartwatch just last week, I received many complaints,or tips, to use a RTC (real-time clock) module. That’s because the Arduino timer is not very precise, it can lose a couple a minutes along a full work day. Luckly, I had one of those modules at my home, I decided
Arduino Chess Clock – Multi-game Box Read More »
Arduino Master Wall Clock. Time displayed on large 1″ (26mm) 7 segment displays with secondary 4×20 LCD information display. The clock can be used stand alone or provides the following pulses to drive slave clocks 1 sec alternating, 30 sec, 1 min , 1 hour, 24 hr, 15 min chime of quarter hours, hourly chime
Arduino DCF77 Master Wall Clock Read More »
Do you (still) remember the display of your old CD player, HiFi system or car radio? Have you ever noticed the displays used at your local supermarket that shows you the scanned item and the price of it? These displays have a characteristic beautiful bright blue-green colored glow in common: These are so called vacuum
Arduino VFD Display Clock Tutorial – A Guide To VFD Displays 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 SketchUp. 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
Mini 7-Segment Clock V3 Read More »
I was extremely satisfied (and proud) of the way that the enclosure turned out for the rework of my 7490 Clock. The electronics on the other hand, is another story. Since it was one of the first things I ever built, I decided to put it in an enclosure of its own and consider it
Large 7-Segment Clock, Part I Read More »
