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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION.
Click on a see also (sa) or tracing (xx) to view detailed entries about a related subject.
The entries are in alphabetical order by magazine name and then in chronological sequence.
To obtain a copy of any magazine article contact your local public library or the publisher.


Product review of low-cost moisture meters. A description of how they work, the performance of four brands of meters and editor recommendations.
AMERICAN WOODWORKER #34 Sep-Oct 1993 pg. 44

Advice on selecting a moisture meter for wood.
AMERICAN WOODWORKER #79 Apr 2000 pg. 14

Moisture meters. Selection and use of devices to check the moisture content of wood.
AMERICAN WOODWORKER #94 Jun 2002 pg. 85

Rainfall detector switch is used to shut off the power to another device via a relay whenever it begins to rain.
COMPUTERS & ELECTRONICS Dec 1982 (v.20#12) pg. 101

A water-leak detector. Circuit senses presence of water and sounds an alarm when probe resistance drops.
COMPUTERS & ELECTRONICS Jun 1983 (v.21#6) pg. 61

Rediscovering the transistor. Includes circuits for a mositure detector, metronome, electrometer, and power timers.
COMPUTERS & ELECTRONICS Jan 1984 (v.22#1) pg. 96

Flood alarm circuit. Audio alarm turns on if water is detected by a probe. Works from any 6 to 12 volt d.c. battery.
CQ. THE RADIO AMATEUR'S JOURNAL Feb 1979 (v.35#2) pg. 100

Electronic water switch closes when immersed in water.
ELECTRONICS ILLUSTRATED Jul 1964 (v.7#4) pg. 91

Windshield washer watcher. Liquid level probe warns you when your windshield washer fluid is low.
ELEMENTARY ELECTRONICS May-Jun 1979 (v.19#3) pg. 72

Tip on adapting a smoke detector to also sound if water is detected.
FAMILY HANDYMAN #270 Jul-Aug 1986 (v.36#6) pg. 96

A review of 18 moisture meters from nine manufacturers that are used to check wood being dried.
FINE WOODWORKING #105 Mar-Apr 1994 pg. 70
Added Info FINE WOODWORKING #108 Sep-Oct 1994 pg. 12

Water-level sensor and control circuit will turn an electric valve, pump, etc. on-or-off.
HANDS-ON ELECTRONICS Sep-Oct 1986 (v.3#5) pg. 24

Circuit for a sump pit water detector.
HANDS-ON ELECTRONICS Dec 1986 (v.3#7) pg. 24

Waterbugg alarm. Inexpensive circuit detects moisture on a floor. Housed in a plastic sandwich box. Powered by three 9-volt batteries which draw no current until the alarm goes off.
HANDS-ON ELECTRONICS Mar 1987 (v.4#3) pg. 71

Water switch detects the presence of moisture and sounds an alarm or trips a relay.
HANDS-ON ELECTRONICS Sep 1987 (v.4#9) pg. 99

Rain detector circuit detects water droplets.
HANDS-ON ELECTRONICS Jan 1989 (v.6#1) pg. 25

Detecting moisture problems in your home using simple tools and techniques.
HOME MECHANIX #748 Sep 1990 (v.86) pg. 17

How to build a soil moisture tester that can be used outside or to monitor houseplants.
MECHANIX ILLUSTRATED #540 May 1973 (v.69) pg. 62

Circuit for a moisture monitor for plants. It will sound a "click" every second or two when the soil moisture falls below a preset level.
MODERN ELECTRONICS [1] Mar 1978 (v.1#2) pg. 6

Circuit for a flood alarm. An audio alarm is sounded if water is detected by the probe. 9-volt battery will last about one year.
MODERN ELECTRONICS [1] Mar 1978 (v.1#2) pg. 68

Raindrop counter. Each time a drop of rain closes a touchswitch gap, an LED counter is incremented. An audible "click" accompanies the count.
MODERN ELECTRONICS [1] Mar 1978 (v.1#2) pg. 90
Correction MODERN ELECTRONICS [1] Jul 1978 (v.1#5) pg. 7

Circuit for a moisture detector powered by 6 to 9 volts.
MODERN ELECTRONICS [1] May 1978 (v.1#3) pg. 6

Circuit for a liquid level detector. Alarm signals when a liquid rises above the level of two probes fixed in place. Est. cost: under $9.
MODERN ELECTRONICS [1] Jul 1978 (v.1#5) pg. 55

This water activated switch is a virtually foolproof way to turn on sump pumps. Est. cost: $10.
MODERN ELECTRONICS [1] Dec 1978 (v.1#9) pg. 78

Circuit design from scratch. A hands-on approach to creating new circuits. Project #1. Controller to turn on a pump when the water reaches a certain level.
MODERN ELECTRONICS [2] Nov 1984 (v.1#2) pg. 57
Correction MODERN ELECTRONICS [2] Jan 1985 (v.1#4) pg. 5

Teleguard. Part 3. Solid-state sensing modules. Low-cost circuits you build to enhance the operation of the Teleguard security system. Includes light-activated sensors, temperature-sensing module, and fluid-detecting module.
MODERN ELECTRONICS [2] Aug 1985 (v.2#2) pg. 56

Build a water watcher, a remote sensor for a water system.
MOTHER EARTH NEWS #63 May-Jun 1980 pg. 134

Transistorized "rain alarm".
POPULAR ELECTRONICS [1] Jun 1964 (v.20#6) pg. 72

Liquid level indicator for the blind. A continuity checker rigged up with a liqid-sensing probe will give an audible signal when a cup, pan, etc. is full.
POPULAR ELECTRONICS [1] May 1967 (v.26#5) pg. 59

Moisture sensor detects liquid of any kind in any location. Est. cost: $3.
POPULAR ELECTRONICS [1] Mar 1971 (v.34#3) pg. 67

Simple circuit to sound an alarm when it begins to rain.
POPULAR ELECTRONICS [1] Jun 1973 (v.3#6) pg. 94

Basement water alarm sounds off if water touches probes.
POPULAR ELECTRONICS [1] Jul 1974 (v.6#1) pg. 24

Alarm circuit to detect water in basement.
POPULAR ELECTRONICS [1] Sep 1974 (v.6#3) pg. 93

Circuit for a moisture sensor which will turn on a 117-volt pump if water gets into a basement.
POPULAR ELECTRONICS [1] Apr 1975 (v.7#4) pg. 87

Electronic Christmas gifts built around the TL489C analog level detector. It can be used to make (1) soil moisture detectors, (2) temperature range indicators, (3) controls and alarms for fish fanciers, chemists, chefs and photographers, (4) battery & continuity testers, (5) toys and games, (6) simple light organs, (7) humidity alarms,...etc.
POPULAR ELECTRONICS [1] Dec 1978 (v.14#6) pg. 78

Space-age electronic projects for boats. Part 1. Includes: voltage monitor, fluid-level indicator, sewage-tank level indicator, and rudder-position indicator.
POPULAR ELECTRONICS [1] Jul 1979 (v.16#1) pg. 39

Solid-state level-sensing switch for sump pumps.
POPULAR ELECTRONICS [1] Aug 1979 (v.16#2) pg. 31

Space-age electronic projects for boats. Part 2. Bilge-water alarm, a tachometer, and voltage-transient protection.
POPULAR ELECTRONICS [1] Aug 1979 (v.16#2) pg. 55

Circuit to detect high liquid levels will work with demineralized water.
POPULAR ELECTRONICS [1] Oct 1979 (v.16#4) pg. 8

Basement flood alarm is battery powered. Rising water trips a relay to start a pump or sound an alarm.
POPULAR ELECTRONICS [1] Jun 1981 (v.19#6) pg. 93

Remote sensing. Part 2.
POPULAR ELECTRONICS [1] Aug 1981 (v.19#8) pg. 76

Moisture detector circuit uses a general-purpose NPN transistor and a dot/bar display driver. Ideal for monitoring soil moisture.
POPULAR ELECTRONICS [2] Sep 1991 (v.8#9) pg. 76

Circuits for gardeners. (1) Soil-monitoring circuit tells the relative moisture of the soil. (2) Control turns an electric water valve off when the soil's moisture content reaches a preset level. (3) Moisture detector that uses AC voltage to reduce electrolysis and corrosion problems. (4) Circuit uses a homemade inductor (instead of probes) to sense soil moisture.
POPULAR ELECTRONICS [2] Jul 1996 (v.13#7) pg. 69

Sump hole alarm is battery powered. Rings bell if water climbs too high in hole.
POPULAR MECHANICS Dec 1972 (v.138#6) pg. 188

Basement water alarm will sound a buzzer in case of flooding. Powered with a 9-volt battery.
POPULAR MECHANICS Jul 1980 (v.154#1) pg. 56

Two basement water alarms you can make yourself. (1) Sump-pump alarm turns on if sump pump hole fills too full. (2) Basement drain alarm sounds if drain begins to back up.
POPULAR MECHANICS Apr 1982 (v.157#4) pg. 84

Moisture sensor sounds alarm warning of water overflow.
POPULAR SCIENCE Jan 1964 (v.184#1) pg. 121

Commercial and homemade alarm systems which can detect flooding in basements.
POPULAR SCIENCE Apr 1974 (v.204#4) pg. 132

Plant water gauge is constructed on a small piece of perforated construction board and powered by a 9-volt battery. Probes stuck into the soil of a potted plant tell you if it needs water.
RADIO-ELECTRONICS Jan 1981 (v.52#1) pg. 73
Correction RADIO-ELECTRONICS Apr 1981 (v.52#4) pg. 24

Circuit for a plant-water monitor. Moisture detector checks the soil at root level.
RADIO-ELECTRONICS Feb 1984 (v.55#2) pg. 97

Easy-to-build battery-powered flood alarm rings a buzzer whenever a sensor gets wet.
RADIO-ELECTRONICS Apr 1986 (v.57#4) pg. 100

Soil moisture meter features a digital readout. Est. cost: $30.
RADIO-ELECTRONICS Jun 1988 (v.59#6) pg. 49

Dew-sensor test circuit lights a red LED when the humidity exceeds 100% and a green LED in low humidity.
RADIO-ELECTRONICS Feb 1990 (v.61#2) pg. 71

How to determine the moisture content of lumber and tips on using a moisture meter.
SHOPNOTES #30 Nov 1996 (v.5) pg. 30

A look at automatic watering devices that include moisture sensors to turn on in-the-ground watering systems only when soil moisture falls below normal.
SUNSET Jun 1977 (v.158#6) pg. 226D

How to read your soil's mind. Using moisture sensors to tell you exactly when to water. What is available and tips on installation.
SUNSET May 1988 (v.180#5) pg. 270

A low-tech yet effective way to find the source of basement moisture.
TODAY'S HOMEOWNER #820 Nov 1997 (v.93) pg. 22

Dampness detectives. A test of ten different moisture meters used to check the dryness of woodworking stock.
WOOD MAGAZINE #127 Oct 2000 (v.17#7) pg. 70

Simple drain alarm will ring a bell if a basement drain should back up and overflow.
WORKBENCH Nov-Dec 1968 (v.24#6) pg. 36