Hobby Projects - Insulation tester, LED Circuits, Meters.

Saturday, September 28, 2013

Bluetooth Multimeter - Seeed Studio

"Bluetooth Multimeter is an intelligent peripheral of android phones, specially designed for engineers. Not only can it easily collect data such as voltage, current and resistance etc., this multimeter can also communicate with phones via bluetooth. Thus, the data gathered will be displayed on your phones."

Bluetooth Multimeter - Seeed Studio

Totally open source, including hardware, software & Android API. Learn how to create a Platform to connect smartphones with the real life.

Bluetooth Multimeter - Seeed Studio

The Bluetooth Multimeter is based on Atmega328 - Arduino Pro. It measures the voltage and resistance and current input from the headphone jack, and then sent these data via the Bluetooth frame.

Android UI for Bluetooth DMM

This Bluetooth Multimeter is a portable multimeter, a device that gathers the voltage, resistance and current. and then sent these data to other device via Bluetooth, so, we could display the data through other devices, such as Android, PC and so on.

Thursday, September 26, 2013

Read Humidity and Temperature on PC

Would you like to view the Relative Humidity RH or The Temperature of your Room, This project will enable you to get these values into the PC on the Serial Port or what you may know as the RS232 port. This project is designed by Peter H. Anderson.

Read Humidity and Temperature on PC

A High humidity like 90% is seen after a Rainfall, A low Humidity like 25% means dry days. A humidity of around 50% is healthy, above that Bugs and Fungus trouble. Less that 40% cause skin and breathing irritations. 60% is comfortable for us and  most equipment. High humidity can cause trouble to unprotected electronics.    

Read Humidity and Temperature on PC

This device has a serial interface, that means you could use a Serial to USB circuit and even interface with your Android tablet.

"This is an assembled unit which interfaces with a PC COM port and provides the capability of measuring the relative humidity and temperature using a Sensirion SHT-71 sensor. It includes an assembled printed circuit board, a 12 VDC wall power unit, and a six foot serial cable (DB9) . The unit interfaces with a COM port or similar at 9600 baud. (A USB to RS232 converter may be used)."

SHT71 - Digital Humidity and Temperature Sensor

Replaceable relative humidity sensor, The internal calibration allows for simple and easy replacement in demanding environments. The capacitive humidity sensor SHT71 is fully calibrated and provides a digital output.

Friday, September 20, 2013

The DMM or Digital Multi Meter

Digital Multi Meter - New Year Resolutions Fluke Electronics - DMM
  1. I will not drop the DMM from a height of 4 feet.
  2. I will not Test Live Powered equipment in the Ohms Mode.
  3. I shall not Measure Mains Voltage in The Current Mode.
  4. I shall get it calibrated once a year or at least once a decade.
  5. I shall not use it in High Energy Measurements.
  6. I will try my best not to give it to my best friend.
  7. I can remember Red is Positive and Black is negative.
  8. I will wear shoes and stand on a block of wood while i test.
  9. I shall not operate the rotary range switch at high speeds.
  10. I shall replace the probes-cables-connectors on wear-tear.
  11. I shall not accidentally keep the hot-iron near the DMM or leads.
  12. I shall not keep DMM on tall table and pull it with the leads.
DMM - How it Looks ... shown right is from Fluke Electronics
 
How To Learn Electronics :

Theory must be studied once and referred to, again and again as you do practicals. One is by building DIY projects and then modifying them. Also Repair of equipment, troubleshooting, testing and calibrating. Then you know how components behave and real life limitations. Now design and engineer a product and test it at customer site. do a pilot production and test with more clients. Now you will learn to think based on practical applications.

"with hard work and innovation you can do it ! "  Solderman Talks 1702 AD

- Solderman Talks 1702 AD

Tutorials on Basics and Instrumentation Electronics 


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