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Sunday, November 01, 2020

Linear Regulated Dual Polarity Power Supply

"This document describes how to construct a dual polarity linear power supply which can be configured for any positive or negative voltage between 1.2-35V. A power supply is the fundamental building block of all but the simplest of electronic devices. It converts the alternating current (AC) from our wall outlets into direct current (DC) at some specified voltage. Because so many electronic devices need DC to function properly, a versatile power supply is the perfect addition to a hobbyist's collection of test equipment. "   from Wayback Machine

 Linear Regulated Dual Polarity Power Supply

Linear Regulated Dual Polarity Power Supply

"There are two versions of the power supply which are fundamentally very similar. The first is a compact fixed-voltage supply measuring 2.9" x 2.2", which is well suited for applications requiring small size and modest current capacity like TTL logic circuits or op-amp based projects such as active crossover networks. The second is a larger (4.6" x 2.25") variable supply sporting more robust heatsinking, and the regulators are positioned such that they may be mounted to a large chassis heatsink for even greater heat dissipation. And since this version of the supply is variable, it is ideal for experimenting. See the photographs near the bottom where I built one into an ATX power supply chassis."

Wireless Phone and your Arduino

We all have phones and we can create apps too. This makes a Arduino a bit isolated without connectivity.

Using some of these Shields you can gift Smartphone Power to your Arduino. Create a Home Automation System with a Smartphone App control. An interactive Robot with SMS. Create a Process Automation System with SMS Alerts too.

3G + GPS shield for Arduino - https://www.cooking-hacks.com/

3G GPS shield for Arduino
Connect to high speed WCDMA and HSPA cellular networks. Make web interactive project like the "Internet of Things". The module counts also with an internal GPS what enables the location of the device outdoors and indoors.
  • HTTP and HTTPS (secure mode) navigation, download, upload to web server.
  • FTP and FTPS (secure mode) protocols are also available.
  • Send and receive mails  from Arduino using the SMTP and POP3 clients. 

Wide Skill Spectrum by Building a Robot

These valuable learning materials are partly derived from Robot Builder's Guide of Fred Martin, the course notes at the Massachusetts Institute of Technology.

Wide Skill Spectrum by Building a Robot

Basic Mechanics— Describes basic mechanics, friction, and the simple machines that comprise the building blocks of more complex machines, like robots.

Sensor Design -  Without sensors, a robot is just a machine. Robots need sensors to deduce what is happening in their world and to be able to react to changing situations. This chapter introduces a variety of robotic sensors and explains their electrical use and practical application.

Wide Skill Spectrum by Building a Robot

Robot Control - The most common kind of robot failure is not mechanical or electronic failure but rather failure of the software that controls the robot. For example, if a robot were to run into a wall, and its front touch sensor did not trigger, the robot would become stuck (unless the robot is a tank), trying to drive through the wall. This robot is not physically stuck, but it is "mentally stuck"

delabs Notes

When you build a robot, you are dealing with Mechanical, Electrical, Electronic and Computer Technologies with the Interfacing.

The improvement in the Wireless Communication, Low Power Hi-Speed Semiconductors coupled with compact gigabytes of Flash/HDD may help build a Creative Robot with a smart brain.