Buzzers - Revision history

Darth Wombat: capitals, capitals

2010-03-13T23:31:21Z

capitals, capitals

Darth Wombat: /* History */

2010-03-13T23:30:36Z

‎History

Stefanido at 03:49, 3 March 2010

2010-03-03T03:49:05Z

Stefanido: New page: When using a closed circuit telephone system, the voltage is often too low to drive the ringer in any phone. In this case, we can substitute '''Buzzers...

2010-03-03T03:43:06Z

New page: When using a closed circuit telephone system, the voltage is often too low to drive the ringer in any phone. In this case, we can substitute '''Buzzers...

New page

When using a [[Closed Circuit Telephone Systems|closed circuit telephone system]], the voltage is often too low to drive the ringer in any phone. In this case, we can substitute '''Buzzers,''' which are electromechanical noise makers running on direct current.

==History==

==New Buzzer System==
The Buzzer system envisioned to accompany the new telephone system had a buzz box in each room of the Habitat that contained a telephone. Each buzz box contained:
*9V Buzzer (25mA)
*2V Green LED (10mA)
*2V Yellow LED (10mA)
*single throw, single pole, momentary switch

Signals ran to and from each buzz box along the Green and Brown CAT5 components in the cables that were already running the Telephone system along their Purple and Orange components.

In the simulator loft a card sends resistor modulated voltage to the buzz box along the green solid and brown solid. Voltage returns along the green and brown stripe wires. The brown stripe wires are all connected to Pin 10 of a [[parallel port]], and the green stripes are individually connected to the collector of an NPN transistor. The base of each transistor is powered by Pins 2 thru 6 of the parallel port.

This setup allows the Habitat to Buzz Mission Control by throwing the switch in the buzz box, and Mission Control to buzz a single room in the Habitat by entering a command on the keyboard corresponding to the Pin 2 thru 6 on the parallel port (this is handled in software).

[[Category: Communications]]

@@ Line 2: / Line 2: @@
 ==History==
-The New Buzzer System was designed by [[Stefan de Young]] in preparation for [[Mission Daedalus]], and he and [[Nevin Hotson]] worked on it tirelessly leading up to launch.
+The New Buzzer System was designed by [[Stefan De Young]] in preparation for [[Mission Daedalus]], and he and [[Nevin Hotson]] worked on it tirelessly leading up to launch.
 ==New Buzzer System==

← Older revision		Revision as of 23:30, 13 March 2010
Line 2:		Line 2:

	==History==		==History==
		+	The New Buzzer System was designed by [[Stefan de Young]] in preparation for [[Mission Daedalus]], and he and [[Nevin Hotson]] worked on it tirelessly leading up to launch.

	==New Buzzer System==		==New Buzzer System==

← Older revision		Revision as of 03:49, 3 March 2010
Line 16:		Line 16:
	This setup allows the Habitat to Buzz Mission Control by throwing the switch in the buzz box, and Mission Control to buzz a single room in the Habitat by entering a command on the keyboard corresponding to the Pin 2 thru 6 on the parallel port (this is handled in software).		This setup allows the Habitat to Buzz Mission Control by throwing the switch in the buzz box, and Mission Control to buzz a single room in the Habitat by entering a command on the keyboard corresponding to the Pin 2 thru 6 on the parallel port (this is handled in software).

−	[[Category: ~~Communications~~]]	+	[[Category: Communication]]