Electronics Mini Projects - 2010

here are some electronics mini projects:


1 Pyroelectric Fire Alarm
2 Telephone Call Recorder
3 DuoPhone
4 Mini UPS System
5 Car-Reversing Horn With Flasher
6 Short-Circuit Protection in DC Low-Voltage Systems
7 Inverter for Soldering Iron
8 Transistorised Logic Probe for TTL
9 Constant-Current Battery Charger
10 Multitone Siren
11 Generator Room Light
12 Liquid Level Alarm
13 PC Power Manager
14 Skin Response Meter
15 Solar Panel based Charger and Small LED Lamp
16 Electronic Bicycle Lock
17 Remote-operated Master Switch
18 USB Power Socket
19 Triple Power Supply
20 Smart Hearing Aid
21 Midnight Security Light
22 Automated Alarm Circuits
23 Traffic Baton
24 Laser-guided Door Opener
25 Battery-level Indicator
26 PC Temperature Controller
27 Traffic Controller
28 Night Alert
29 Muscular Stimulator
30 Wireless Switch
31 Long-Range IR Transmitter
32 Electric Window Fence Charger
33 Three-Phase Appliance Protector
34 PC Multimedia Speakers
35 Aquarium Probe
36 Bicycle Indicator
37 Poor Man’s Hearing Aid
38 Portable Lamp Flasher
39 Staircase Light With Auto Switch-Off
40 Car Anti-theft Guard
41 USB Power Booster
42 Smart Vibration Sensor
43 Drinking Water alarm
44 GLOW PLuG CONTROLLER
45 Versatile CMOS TTL Logic And Clock Probe
46 Tester For Remote Control
47 Automatic Low-Power Emergency Light
48 Mobile Bug
49 LED Lighting for Christmas
50 Current Sensor
51 Seismic Sensor
52 Dice With 7-Segment Display
53 Motorbike Alarm
54 Laptop Protector
55 Shutter Guard
56 Desktop Power Supply
57 Mobile Shield
58 Infrared Firecracker Igniter
59 Automatic Phase Changer
60 Flying Saucer
61 Anti-Collision Rear Light
62 Light Fence
63 MAT Switch
64 5-Band Graphic Equaliser
65 Clock Timer
66 Fully Automatic Emergency Light
67 IR Music Transmitter and Receiver
68 Electronic Horn
69 Ultrasonic Proximity Detector
70 Secret Bell
71 Variable Power Supply Using a Fixed-Voltage Regulator IC
72 Appliance Timer-Cum-Clap Switch
73 Telephone-Operated Calling System
74 Front Door Guard
75 Bell-Cum Light Controller
76 Friendly Charger for Mobile Phones
77 Hearing Aid
78 Speed Control of DC Motor Using Pulse-Width Modulation
79 Remote-Controlled Fan Regulator
80 Low-Power Voltage Doubler
81 Parrot-Sounding AC Doorbell
82 Multi-Melody Generator With Instrumental Effect
83 School-College Quiz Buzzer
84 Visual AC Mains Voltage Indicator
85 Simple Short-Wave Transmitter
86 Solar Lighting System
87 Infrared Bug
88 Picnic Lamp
89 Versatile Power Supply
90 Ultrasonic Proximity Detector
91 Shadow Alarm
92 IR Burglar Deterrent
93 Versatile Water-Level Controller
94 Automatic-Off Timer For CD Players
95 Heat-Sensitive Switch
96 Sensitive Vibration Detector
97 Digital Dice
98 Remote-Controlled Power-Off Switch
99 Little Door Guard
100 Stress Meter
101 Teleconferencing System
102 Medium-Power FM Transmitter
103 Smart Cellphone Holder
104 Fuel Reserve Indicator For Vehicles
105 Brake Failure Indicator
106 Safety Guard
107 Mains Supply Failure Alarm
108 Remote Control For Home Appliances
109 Micromotor Controller
110 Solar Bug
111 Simple Digital Security System
112 Digital Audio/Video Input Selector
113 Auto Turn-Off Battery Charger
114 Atmel AVR ISP Dongle
115 Audio Amplifier for Personal Stereo
116 Musical Light Chaser
117 Water-Level Controller
118 Hit Switch
119 Fire Alarm Using Thermistor
120 Electronic Watchdog
121 Automatic School Bell
122 Anti-Theft Alarm For Bikes
123 DC Motor Control Using A Single Switch
124 Solidstate Remote Control Switch
125 Flashing-Cum-Running Light
126 Quality FM Transmitter
127 Stabilised Power Supply With Short-Circuit Indication
128 Digital Stop Watch
129 Cell-Phone-Controlled Audio/Video Mute Switch
130 PC-Based DC Motor Speed Controller
131 Child's Lamp
132 Watchman Watcher
133 Highway Alert Signal Lamp
134 Low-Cost Electronic Quiz Table
135 Mobile Cellphone Charger
136 Smart Foot Switch
137 Programmable Timer for Appliances
138 Anti-Bag-Snatching Alarm
139 LED-Based Message Display
140 Multiband CW Transmitter
141 Automatic Night Lamp With Morning Alarm
142 Touch Dimmer
143 Mosfet-Based Preamplifier for FM Radio DXing
144 Non-Contact Power Monitor
145 Remote-Operated Musical Bell
146 Electronic Motor Starter
147 Telephone Receiver
148 Washing Machine Motor Controller
149 Low-Cost Hearing Aid
150 Over-Under-Voltage Protection of Electrical Appliances
151 Parallel Telephone With Secrecy and Call Prevention
152 Voltage-Based Controller For Switches
153 DTMF Receiver IC MT8870 Tester
154 Pulse Generator
155 Infrared Remote Control Timer
156 Clap Switch
157 Multi-Switch Doorbell With Indicators
158 Song Number Display
159 Lead-Acid Battery Charger With Voltage Analyser
160 Electronic Security System
161 Three-Colour Display Using Bicolour LEDs
162 Ultra-Bright LED Lamp
163 Computerised Universal Timer
164 Number Guessing Game
165 PC-Based Oscilloscope
166 Intruder Radio Alert System
167 Flashing Beacon
168 Knock Alarm
169 Automated Traffic Signal Controller
170 Infrared Toy Car Motor Controller
171 Mains Manager
172 Crystal-Controlled Time-Base Generator
173 Mains Operated Christmas Star
174 Music On-Hold For Telephones
175 Solidstate Switch For DC-Operated Gadgets
176 Ding-Dong Bell
177 IR Remote Switch
178 Shortwave Transmitter
179 FM Booster
180 Laser Torch-Based Voice Transmitter And Receiver
181 Mobile Phone Battery Charger
182 Fastest Finger First Indicator
183 Condenser Mic Audio Amplifier
184 DarkRoom Timer
185 Speller Effect Sign Display
186 Stereo Tape Head Preamplifier For PC Sound Card
187 A Hierarchical Priority Encoder
188 Digital Mains Voltage Indicator
189 Water-Level Controller
190 Invisible Broken Wire Detector
191 Anti-Theft Security For Car Audios
192 Simple Telephone Ring Tone Generator
193 Versatile Zener Diode Tester
194 DTMF Proximity Detector
195 Under-/Over-Voltage Beep for Manual Stabiliser
196 15-Step Digital Power Supply
197 Auto Shut-off For Cassette Players And Amplifiers
198 House Security System
199 Generation Of 1-Sec. Pulses Spaced 5-Sec. Apart
200 9-Line Telephone Sharer
201 Musical ‘Touch’ Bell
202 Automatic Heat Detector
203 Single Phase Electronic Starter
204 Precision Amplifier With Digital Control
205 Precision Attenuator With Digital Control
206 Infrared Electronic Shooting Game

Have fun with them!!!