Ashraf Minhaj

PIR sensor When I was working on a project "controlling home appliances using just a wave of hand" I had used a PIR sensor and found some issues: PIR doesn't work properly when starts. PIR output value is always 1. It some times doesn't read motions. Now those are three Common and Unavoidable problems of a PIR sensor. So what would we do? I assume you know what a PIR sensor is and I'll just try to give a solution to the problems so that you can use PIR in your project efficiently, also I've added a code below on how to solve that problem. As I have mentioned earlier those are Common and Unavoidable,  keep 3 issues in mind: After powering - PIR sensor needs 1 minute to function For that 1 minute the OUTPUT is always HIGH. When a motion is detected it'll take 5 to 7 seconds to detect motion again. SOLUTION: After powering - PIR sensor needs 1 minute to function:  which means when you'll power a PIR sensor it wi...

An automated Medicine Reminder that reminds you to take your medicine in time. For any query please mail at ashraf_minhaj@yahoo.com PARTS YOU'LL NEED: 1. Arduino pro mini -5v 16mHz 2. Buzzer 3.  330r/220 /1k resistor 4.  Vero board 5.  Female pin COD E: After restarting the Arduino it waits for 24 hours and then keeps on buzzing. Change the delay as your requirement. It won't stop untill you press the restart button, which means you have to get to your medicine box in order to stop the alarm. And after you press the button it'll again alarm after 24 hours.  24 hours = 24 * 60 minutes                = 24 * 60 * 60 seconds                = 24 * 60 * 60 * 1000 mili seconds (1sec = 1000 mili second)                = 86400000 ms /* MeDuino: Automatic Medicine reminder. * By Ashraf Minhaj www.ashrafminha...

Introduction I've been trying to make a humanoid robot  MOFIZA -Arduino Talking Humanoid Robot.  recently- which means dealing with Servo motors. Everything worked just as fine just before I tried to make the robot TALK. When I needed to use the TMRpcm library. But there's some libraries like #TMRpcm .h #VirtualWire .h are libraries that use the Timer1 of Arduino. It appears that you can't use two devices simultaneously where both use the same timer...So, if my robot talks- the servos don't work. Because The Servo.h and the TMRpcm both works on Arduino TImer1. Which is a mess. If you want to make both of them work you have to use another library for servos. Which is ServoTimer2 library? This uses the Timer2 on Arduino...Unfortunately on internet I haven't found any tutorials to understand how this ServoTimer2 library actually works, and how to use it in code. So, I've decided to make a tutorial so that people like me can understand better. We'll be u...

This Robot - Mofiza - (weird name) Can SEE , TALK and REACT to her surroundings. Before I proceed watch the video: Ever since I've seen making talking robots I saw that people actually use other development boards rather than Arduino to make talking robots. But it's completely possible to make a Humanoid robot with Arduino who can talk and add a lot of servos to make it move. So lets begin: Step 1: Parts You'll Need Arduino Pro mini (5v 16 Mhz) [any board is good but i've used this to make it small) Female header pins for connecting on pcb Male header pins Vero Board to make the circuit Sd card TF module (to make it talk) micro sd card (not more than 2GB) 3x IR proximity sensor 3x servo motor (I've used micro servo sg90) Cardboard to make the body Step 2: Connecting IR Sensor and the Body Make a...