Search found 3 matches

by KROLRADIO
Wed Oct 24, 2007 5:07 pm
Forum: General Discussion
Topic: POSITIVE GROUND?
Replies: 4
Views: 1331

POSITIVE GROUND?

My son is always bringing home something new for me to try to get working.The latest was a set of rotating lights from an old fire truck. I told him I would clean up & get it working again.There were only two wires coming from each light. Taking the lights apart was one wire from motor to rotate lig...
by KROLRADIO
Fri Jul 21, 2006 4:17 pm
Forum: General Discussion
Topic: Humidity Sensor?
Replies: 1
Views: 1018

Humidity Sensor?

I got new book today-Electronic Sensors For The Evil Genius-I am trying to find direct source for humidity monitor project (General Eastern Instruments Part#G-CAP2 Humidity Sensor) I get pdf brochures on searches.

Any help?
by KROLRADIO
Sat Jun 10, 2006 11:20 am
Forum: General Discussion
Topic: 7-Segment LED Display Hookup
Replies: 5
Views: 1565

7-Segment LED Display Hookup

I am building the Digital Tachometer in May 2006 issue of N&V.I never hooked up these 7 segment displays before.Pins 3,5,11,6 are listed as common anodes on data-sheet. Do ALL of these pins (3,5,11,6) go to the 220ohm resistor & 5 volts in schematic? What are pin 6-cathode LHDP & pin 9-cathode RHDP ...