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Dual Comparators Stabilize Proximity Detector - 02/16/98 EDN-Design Ideas: (design
idea added 3/03) |
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Electric field disturbance monitor - designed by David A. Johnson, P.E.
(electronic design added 11/06) |
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Wireless Temperature & Humidity Sensor with USB - this project is based on obdev's
RemoteSensor example and their firmware-only USB implementation; the main change is
the replacement of the analog sensors with a Sensirion SHT11 digital temperature and
humidity sensor…(added 07/07/07) |
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Wireless Temperature & Humidity Sensor with USB Interface - This project is based
on obdev's RemoteSensor example and their firmware-only USB implementation; the main
change is the replacement of the analog sensors with a Sensirion SHT11 digital
temperature and humidity sensor. ….(electronic schematic added 11/08) |
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Electric Field Disturbance Monitor-1 - This schematic is the power supply and
front-end sections of the field monitor that is discussed in more detail at Electric
Field Disturbance Monitor. The system can detect human and animal motion by the
electric fields they disturb. ….(designed by David A. Johnson) |
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Electric Field Disturbance Monitor-2 - This schematic is the motion discriminator
alarm and battery monitor sections of the field monitor that is discussed in more
detail a Electric Field Disturbance Monitor. (link is off-site) ….(designed by David
A. Johnson) |
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741 Based Light Sensor - CdS photocell used for light/dark controlled relay (Tony
van Roon's electronic design added 4/02) |
