Forum: Electronics

guys i am completely new to 8051, i want yu to help me out with th power supply circuitary.

Hi I am a newbbie and got a simple stupid questions for u experts out there. How to interface L293D with PIC16F84. Which pins of PIC are used to...

Hello everybody ! Do you have 'overhead tank' at your home , and have to check it every morning to see how full it is ? Well, I do. Being sick of...

hey,i need an A to D, and then a D to A converter. Has anyone done that before? I need it for communication. What chip would be nice? I want the...

wen a robot moves on a uneven path(platform) tell me a way to measure the angle at each instant

ok.. the tutorial doesn't really explain how to set multiple pins to high and low... so lets say for example i expand it to 2 leds... i have pin 2,...

PLZ help me guys.....im building a robot with L293D... but i dont have the circuit diagram for it.. does anyone has it?? and what other components...

Hi guys, i am working on a small project and have to make a simple automatic battery charger circuit for charging Two AAA Ni-Cd/Ni-MH batteries, 1.5V...

i m working on bot which can put a table tennis balls in the hole im think of something like a electric piston to hit the ball this is going to be...

I read some articles on Active Bandpass Filter on the net. And I come across Switched Capacitor Bandpass Filter which seems very accurate. Has...

Providing power to my robot is really getting on my nerves , I have been searching far and wide for the battery i need but so far all i have found...

I want a cost effective camera trap ciircuit.

hi friends, my objective is to supply max 5V DC power supply to my Stepper motor driver chip UCN5804B ,so can i use UPS output for it. But my...

Hello All, I had been thinking of making a heartbeat frequency counter(heart rate monitor) which is mostly seen in Gym treadmills. I made one with...

Hello ppl, Just wanted to know if anyone has used cell phone batteries (Li-ion) for their robots. The batteries for NOKIA 3210 are 3.2V and 850...

I have bought a 12 V lead acid battery, current rating 1.2 Ah !!! Now, the real problem is how to charge it, i have found plenty of circuits to...

i have a robot which needs to climb a hinged 90 degree grid plz telll me how to do it?

Hello! Im looking for CMPS Module Shematic... Can anyone help me ? :cry:

Hi everybody Im working on a microphone amplifier to be used in a sound tracking robot. I've completed with the amplifier part, using two sections...

hi friend, i have faced a similar problem with my p4 during summers what i did was to put up a 12v dc fan 6inch wing span, this is of...