delabs Circuits

Showing posts with label Robotics. Show all posts
Showing posts with label Robotics. Show all posts

Tuesday, July 12, 2016

Ultra Sound Sender Detecter Diagram

I am a University Physics technical staff member and I am searching a Diagram and full detals about Ultra sound detecter (Sender & receiver & Detecter). It must be arround (Detecting range ) 1.2 MHz. This is for the student practical activities.

Pl help me if you have any information. This will be a gratefull help to the students for their studings.

Mail from PBG Sri Lanka

See an earlier post - Ultrasonic distance measurement if i find more it will be added here Ultrasound Have a look at all links below, that might help

Ultrasonic Sound

"Sounds in the range 20-100kHz are commonly used for communication and navigation by bats, dolphins, and some other species. Much higher frequencies, in the range 1-20 MHz, are used for medical ultrasound."

Ultra Sound Sensor

4QD-TEC: Ultrasonics: remote control and Intruder detector - These ultrasonic circuits are all quite old: my notes date them at mid-70s so ... The last circuit is an ultrasonic preamp with a twin T feedback to make it ...

Schematics Depot (tm) - ultrasonic switch circuit - The ultrasonic receiver circuit uses an ultrasonic receiver transducer to sense ultrasonic signals. It also uses a two-stage amplifier, a rectifier stage, ...

Silicon Chip Online - Circuit Notebook - Besides being used as a Bat Detector, the circuit could also be used as a simple tool to indicate frequency, to find tyre punctures (which emit ultrasound), ...

Ultrasonic (Ultrasound) Electronic Circuits - Ultrasonic (Ultrasound) Circuits

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Wednesday, May 04, 2016

Make an Encoder for your Bot

I want to build a cheap wheel encoder by myself. - Need some help here. I want to build a cheap wheel encoder by myself. Now, my idea was to use a photodiode and a LED. What i don't know is how to use the output from photodiode to put on a GPIO on my MCU board. Do i need some resistors or something. Aaaa, i need a high level of 5V for my GPIO. I - AV

Answer - Please study Links Below

Optical Encoder Project - "Many years ago, I competed in MASLab, an MIT competition to build an autonomous robot. A year or two after that, I was on the MASLab staff, helping prepare the hardware for the year's competition. One of the projects I worked on was an optical encoder."

About Encoders and How to Make an Encoder Wheel

"A typical encoder uses optical sensor(s), a moving mechanical component, and a special reflector to provide a series of electrical pulses to your microcontroller. These pulses can be used as part of a PID feedback control system to determine translation distance, rotational velocity, and/or angle of a moving robot or robot part."

Make your own rotary encoder

Make an Encoder for your Bot

"In the first and second post of this series you saw the basics of how to use photointerrupters. Now it’s time for practice. We make a rotary encoder. Here we take a single photointerrupter that gives us the pulses we can count."

Make Your Own Encoders chat - "I'm starting a·dedicated·thread on the specific encoders I used on my Homebuilt platform. I had great results. A word about the encoder disks: they must be mounted PERFECTLY to achieve consistency. Perfectly flat, true, and concentric.

Incremental Optical Encoders

Here is a method for making an encoder with two sensors for your application. If you only need speed sensing, you may want to skip down to the construction section. The important variables are the radius of the circle (r), the distance between the two optical sensors (s), and the number of divisions in the wheel (d). .....

Ananth -

Use a photointerrupters, even from an old wheel mouse if you want or build one. Then you need a Wheel with stripes and a Schmitt Trigger Gate or Comparator

A rotary encoder, also called a shaft encoder, is an electro-mechanical device that converts the angular position or motion of a shaft or axle to an analog or digital code.

Thursday, November 05, 2015

Electro tech online - Design Forum

Building an electronic project or want some assistance. Submit your electronic questions at Electro tech online - Design Forum. Experienced members can help find a solution.

Electro Tech has been around for nearly a decade; has a membership of practical and seasoned enthusiasts, engineers and students. Here you may find many interesting ideas for projects and repair/fixing tips.

Repairing Electronics - If you're trying to fix an electronics device like a TV, Stereo, etc you can discuss it here.

Robotics & Mechatronics - Specific to discussions about robots and the making of.


From Hobby Hound - DIY Electronics