Sketch- Test Amarino
Get the sketch: https://gist.github.com/buildcircuit/3939682
Arduino Sketch- RGB multicolor lamp
Link to this gist: https://gist.github.com/buildcircuit/3939423
Open source hardware association
I recently found a video explaining the open source hardware.
It’s good to see an association for the open source hardware community. You can be a member, support the association and keep yourself updated with the technologies coming up in the open source world.
Link: http://www.oshwa.org//a
How to use an electret microphone
An electret is a permanently charged dielectric. It is made by heating a ceramic material, placing it in a magnetic field then allowing it to cool while still in the magnetic field. It is the electrostatic equivalent of a permanent magnet. In the electret microphone a slice of this material is used as a part of the dielectric of a capacitor in which the diaphram of a microphone forms one plate. Sound pressure moves one of its plates. The movement of the plate changes the capacitance. The electret capacitor is connected to an FET amplifier. These microphones are small, have excellent sensitivity, a wide frequency response and a very low cost.
Flasher circuit using NE555 timer- Basic electronic project
This flasher circuit is bit different from other flasher circuits published on buildcircuit.com.
Sensor Alarm using thyristor- Basic electronic project
This is a simple RC circuit using thyristor. You might have done similar projects using transistors. Let me provide you some of my previous RC projects:
You can make several projects with this module, for example, Remote tester, object counter, etc. (more…)
Light dependent blinker using LDR and CD4093
Here’s a simple experiment with LDR and CD4093. This is just a modification of a previous project “dark sensor using 2 transistors”. In this project, the CD4093 is configured in such a way that whenever you block light falling on LDR, the circuit starts blinking the LED D1.
The flasher circuit does not get power till there is enough light on LDR. The CD4093 circuit gets power via emitter of Q2- BC547 when you block light falling on LDR. (more…)