Bharadwaj's Projects

BHARADWAJ'S PROJECTS LIST

1.Temperature on/off controller using thermistor

2. Microcontroller based dc Motor speed controller

3. Microcontroller based solar switch

4. Microcontroller based conveyor belt counter

5. Microcontroller based tachometer

6. Dtmf operated robot

7. Dtmf based door lock

8. dtmf based home automation

9. dtmf based industrial control

10. microcontroller based touch operated industrial gate controller

11. microcontroller based fan speed controller

12. Automatic refilling plant

13. Sound operated robot manipulation

14. Object avoidance robot using proximity sensors

15. Pc based electronic charger

16. Microcontroller based fuse blown alarm

17. Microcontroller based water level controller

18. Microcontroller based intelligent solar charger

19. Microcontroller based density traffic light controller

20. Microcontroller based wireless dc motor control

21. Microcontroller based IR industrial automation

22. Automatic rain fall detector

23. Intelligent sensor based industrial fire detector

24. Microcontroller based high end smoke detection

25. Microcontroller based industrial abnormality indicator

26. Microcontroller based highly confidential industrial security alarm

27. Microcontroller based infrared proximity detector

28. Magnetic proximity detector

29. Microcontroller based motion switch

30. Microcontroller based industrial light brightness control

31. Pc based industrial loads control

32. Pc based 8 motor direction control

33. Microcontroller based stroboscope for frequency measurement

34. Pc based Automatic time scheduler for electrical loads

35. Pc based robot control

36. Pc based wireless home automation

37. Pc based wireless dc motor control

38. Pc based stepper motor controller

39. Microcontroller based elevator controller

40. Labview based industrial appliances control

41. Microcontroller based line follower robot

42. Gsm based robot control

43. Gsm based home appliance control

44. Microcontroller based motor angle movement control

45. Gsm based dc motor speed control

46. Gsm based elevator control

47. Microcontroller based Automatic railway gate control

48. Microcontroller based boiler level control using electrodes

49. Atmega8 based linear displacement control

50. Atmega8 based angular displacement control

51. Atmega8 based stepper motor control

52. Microcontroller based air pressure indicator

53. Atmega8 based DC motor conversion into a servo motor

54. Atmega8 based DC motor conversion into a stepper motor

55. PIC microcontroller based Automatic tank filling

56. PIC microcontroller based one rupee coin box

57. PIC Microcontroller based anti car crash system

58. PIC microcontroller based tank over flow preventer

59. PIC microcontroller based robot motion control through human hand

60. PIC microcontroller based light chasing robot

61. Pic microcontroller based ship loading and unloading robot

62. Advanced surveillance fire detecting and alarming robot

63. Smoke detecting robot based on PIC microcontrollers

64. Weather monitoring robot based on 8051 microcontrollers

65. Aqua robot based on Advanced PIC microcontrollers

66. PIC microcontroller based password locker for highly secured areas

67. 8051 microcontroller based bank token number display

68. 8051 microcontroller based electronic voting machine

69. 8051 microcontroller based wireless stepper motor control

70. 8051 microcontroller based walking robot

71. 8051 microcontroller based visitor counter

72. 8051 microcontroller based plant irrigation system

73. 8051 microcontroller based soil moisture detection and controller

74. 8051 microcontroller based turbine controller

75. 8051 microcontroller based security systems in restricted areas

76. 8051 microcontroller based solar energy saver using parallel processing

77. 8051 microcontroller based distributed control systems

78. 8051 microcontroller based wireless process control system

79. 8051 microcontroller based tank temperature control & position indication

80. 8051 microcontroller based two wire eight load controller

81. 8051 microcontroller based metal detection system

82. 8051 microcontroller based intruder detection and alarming system

83. 8051 microcontroller based medical wheel chair control system

84. 8051 microcontroller based industrial safety robot

85. 8051 microcontroller based robot navigation by distance locking technique and object avoidance

86. 8051 microcontroller based wheel less robot controller

87. PIC microcontroller based automatic window automation

88. PIC microcontroller based soccer robot control

89. PIC microcontroller based Huber craft system

90. PIC microcontroller based roller system for industrial heavy load lifting systems

91. PIC microcontroller based RF robot loads mover in packing section of industry

92. PIC microcontroller based advanced drilling machine controller

93. PIC microcontroller based highly intelligent water boat controller with automatic obstacle avoidance robot

94. PIC microcontroller based pick and place robot controller

95. PIC microcontroller based level and temperature control system

96. PIC microcontroller based level control using mirror image feed back system

97. PIC microcontroller based dead weight indicator system with three positions

98. PIC microcontroller based flow controller using propeller technique

99. PIC microcontroller based power electronic load control using SCR

100. PIC microcontroller based Green House controller of four temperature sensors and its control

MY LIST 2

1. Object recognition robot using image recognition

2. Arm Manipulator using labview

3. Artificial Intelligence Fire Fighter

4. Artificial Intelligence based Pressure Controller

5. Plant Humidity Controller

6. Cascaded Control System

7. Pattern Recognition System

8. Computer Controlled Vehicle

9. Airplane Speed Recorder

10. Automatic Vehicle Supervisor

11. Vehicle Guiding Through Remote

12. Auto Signaling For Train In Level Crossing

13. Vehicle Theft Alarm

14. Auto Power Window System For Cars

15. AI Based Automatic Traffic Light System

16. Solar Operated Vehicle

17. Digital Over Load Indicator For Vehicle

18. Power Steering Using Servo Actuators

19. Power Steering Using Servo Actuators

20. Automatic Porch Light

21. Voice Operated Vehicle

22. Brake Failure Indicator

23. Wheel Angle Indicator

24. Automatic Air Filler For Wheels

25. Measurement using Image Processing

26. Motor Shaft Positioning Indicator

27. Auto Shape Finder

28. Real Time Machine Control using Cell Phones

29. Real Time Machine Control With GSM Modem

30. Multi Channel Fire Sensing System

31. Isolated RS232 To TTL Converter

32. Crane Robot

33. Auto Target System

34. Attendance System for Industries

35. PC Controlled Transformer Winding M/C

36. PC BASED DUEL STEPPER MOTOR DRIVER

37. WIRELESS DEVICE CONTROLLER BY USING PC

38. Remote Operated Wireless Crane Control System

39. DC Motor Speed Control with Programmable Sequence

40. Traffic Light Controller using PC

41. 2 Axis Robot (Programmable)

42. Street Light Control Through Computer

43. Remote Controlled Switch Board

44. Multi Tank Level Monitoring & Controlling

45. 2-Way Remote Control

46. Computer Oscilloscope

47. Stepper Motor control Via Parallel Port

48. Computer Controlled Fluid Level Controller for Chemical Plants

49. Railway Accident Monitoring System

50. Security System Based on PC

51. Security System Based on PC

52. PC Operated Drilling Machine

53. PC based Multimeter

54. MICROCONTROLLER BASED 16 x 2 LCD DISPLAY.

55. MICROCONTROLLER BASED PULSE COUNTER.

56. MICROCONTROLLER BASED 6 CHANNEL ON/OFF BY REMOTE

57. MICROCONTROLLER BASED TEMPERATURE AND BATTERY VOLTAGE IN A PC

58. MICROCONTROLLER BASED TIME SWITCH ON/OFF ELECTRICAL APPLIANCES WITH REAL TIME.

59. MICROCONTROLLER BASED 24 CHANNEL ON/OFF BY REMOTE.

60. MICROCONTROLLER BASED FAN SPEED CONTROLLER BY PWM USING REMOTE

61. MICROCONTROLLER BASED PROGRAMMABLE EXAM TIMING ALARM.

62. MICROCONTROLLER BASED INDOOR AMBITION ROOM LIGHT CONTROLLER.

63. MICROCONTROLLER BASED MONITORING SYSTEM.

64. MICROCONTROLLER BASED DIGITAL COUNTING MACHINE

65. MICROCONTROLLER BASED SCHOOL BELL

66. MICROCONTROLLER BASED TIME LOCK FOR BANK PURPOSE.

67. MICROCONTROLLER BASED SAFETY GUARD FOR BLIND.

68. MICROCONTROLLER BASED FIRST ANSWERING TEAM CAPTURING STUDIO AID.

69. AN INTELLIGENT MOBILE ROBOT NAVIGATION TECHNIQUE

70. CAN BASED DC MOTOR CONTROL

71. MICROCONTROLLER BASED NON CONTACT SENSOR FOR PETROLEUM LEVEL MEASUREMENT AT PROCESS PLANTS

72. PREVENTION SYSTEM FOR AUTOMOBILES

73. MICROCONTROLLER BASED SHOPPING TROLLEY IN SUPERMARKETS

74. SINGLE PHASE INDUCTION MOTOR CONTROL

75. SURVEILLANCE SYSTEM FOR RAILWAYS

76. TOUCH SCREEN CONTROLLER BASED DRIVING SYSTEM

77. TRAFFIC VIOLATION SYSTEM USING EMBEDDED SYSTEM

78. VOTERS IDENTIFICATION SYSTEM USING LABVIEW

79. WIRELESS BASED METAL TRACKING ROBOT

80. WALKING STICK WITH HEART ATTACK DETECTOR

81. Contact-less Transmission of Signal Between Sensors and Conditioning Circuit

82. Design of pulse Oximetry Monitor System

83. Digital Blood Pressure Monitor

84. Solar Panel battery charger

85. MICROCONTROLLER BASED CENTRAL HEATING CONTROLLER

86. CURRENT MONITOR AND ALARM

87. REMOTE CONTROL FOR LIGHT SWITCH 2

88. THERMOSTAT CONTROLLED SOIL HEATING

89. FAST VOLTAGE CONTROLLED PULSE GENERATOR

90. MICROCONTROLLER BASED CANTEEN AUTOMATION

91. POWER DISTRIBUTION OPTIMIZATION BY FINDING MAXIMUM DEMAND

92. RF CONTROL ROBOT

93. 4 CHANNEL PETROCHEMICAL FIRE MONITORING AND CONTROL STATION

94. HOTEL POWER MANAGEMENT THROUGH PC

95. 8 CHANNEL LOGIC ANALYSER

96. POWER HOUSE MONITORING THROUGH RADIO FREQUENCY

97. RF CONTROL OF INDUCTION MOTOR

98. HEART BEAT MONITOR

99. 8 ZONE INTRUDER ALARM SYSTEM

100. CONTACTLESS TECHO GENERATORS

101. ANNUCIATION SYSTEM FOR 8 FAULTY CONDITIONS

102. MICROCONTROLLER BASED 12 CHANNEL INFRARED REMOTE CONTROL SYSTEM

103. MICROCONTROLLER BASED Foot Acceleration Sensor

104. MICROCONTROLLER BASED Accelerometer Mouse

105. MICROCONTROLLER BASED Digital Stethoscope

106. MICROCONTROLLER BASED PATIENT MONITORING SYSTEM

107. MICROCONTROLLER BASED Blind Stick Using Infrared

108. MICROCONTROLLER BASED Vibration Sensor

109. MICROCONTROLLER BASED Precision Temperature Sensing Using RTD

110. Train Anti-Collision Detection and Prevention System

111. Pipe-Length Measurement for HDPE Plants Digital Based

112. MICROCONTROLLER BASED Drilling Machine Speed Controller

113. MICROCONTROLLER BASED Object Counter for Industries

114. Wire Less Communication From PC To µC

115. HYDRO ELECTRICITY

116. Power Monitoring System for Motors

117. Pc to Microcontroller communication Through USART

118. Input Water Sensing And Overhead Tank Filling System

119. Wire Position Sensor Encoder and Distance Measurement

120. MICROCONTROLLER BASED Paint Spraying Robot

121. MICROCONTROLLER BASED Lift control System

122. Priority for Emergency Vehicles in Traffic Signals

123. MICROCONTROLLER BASED 8 - Channel Water Level Controller

124. Color Detection using Image Processing

125. DC MOTOR SPEED CONTROL FROM PC COM PORT(8051)

126. MICROCONTROLLER BASED Temperature Monitoring using Thermocouple

127. MICROCONTROLLER BASED Wireless Home security System

128. MICROCONTROLLER BASED Battery Level Monitor

129. MICROCONTROLLER BASED Oil-Tank Level Indicator

130. MICROCONTROLLER BASED Conveyer Controller

131. Induction motor speed monitoring & control using PWM Technique

132. MICROCONTROLLER BASED Heat exchange controller

133. Centralized wireless monitoring in textile industries

134. Intilligent car parking controller using AI

135. Automatic shutter control system with intelligent security system

136. MICROCONTROLLER BASED Sound Level Meter

137. MICROCONTROLLER BASED Load Sharing using DC Motors

138. MICROCONTROLLER BASED LIGHT FOLLOWER ROBOT

139. MICRO PROCESSOR BASED REVERSIBLE D.C. MOTOR CONTROL

140. MICRO CONTROLLER BASED RELAY SWITCHING

141. ANOLOG TO DIGITAL CONERTER USING AT89C51 MCU

142. AN INTELLIGENT AMBULANCE CAR WHICH CONTROL TO TRAFFIC LIGHT

143. MICRO CONTROLLER BASED OPTICAL REMOT SWITCH

144. MICRO CONTROLLER BASED HEAT SENSITIVE SWITCH

145. P.C. BASED VISITOR COUNTER

146. P.C. BASED DIGITAL CLOCK

147. P.C. BASED FUNCTION GENERATOR

148. MICRO CONTROLLER BASED ULTRASONIC MOVEMENT DETECTOR

149. HYDRAULIC LIFT ROBOT

150. LINE FOLLOWER OR TRACING ROBOT

151. AUTOMATED WALKING ROBOT

152. PATH FINDER MOBILE ROBOT

153. ELECTRICITY FROM SPEED BRAKER

154. WIND ELECTRICITY

155. ROBOTIC CRANE WITH UP/DOWN & CIRCULAR MOTION

156. MICRO CONTROLLER BASED Pneumatic Punching Machine

157. Foot Step Pressure Electrical Power Generator

158. Frictionless Electromagnetic Breaking System

159. Automatic PNEUMATIC DOOR OPENER

160. MICRO CONTROLLER BASED Rain activated wiper

161. MICRO CONTROLLER BASED Hopper Filling system

162. MICRO CONTROLLER BASED Automatic Pressing system

163. Wire Router Robot For Panel Wiring

164. Auto Leveling Robot for Ground Level Applications.

165. DESIGN OF pneumatic Pick and place Robot

166. Online Inspection Robot

167. Robot to robot Message Transmission

168. Seed Sprayer Robot

169. Robot for Thread Mills Application

170. Supervisory Robot

171. Slave Robot

172. Color Identifier Robot

173. Automatic Bowling Robot

174. Robot For Filling Machine

175. Crack Detector Robot

176. House Cleaning Robot

177. Paint Spraying robot

178. Crane Operating Robot through PC

179. Automatic Path Finding Robot

180. Glass Cutting Robot

181. Advanced welding Robot

182. Robot For Garden Maintenance

183. Humanoids

184. Prosthetic Arms

185. Prosthetic Legs

186. Security Robot for Banks

187. Robot For Agriculture Purpose

188. MICROCONTROLLER AT-89C51 BASED METRO TRAIN PROTOTYPE USING pc

189. MICROCONTROLLER AT-89C51 BASED AUTO SPEED LIMITER WITH AUTO BREAKING

190. MICROCONTROLLER AT-89C51 BASED OVER CURRENT RELAY

191. MICROCONTROLLER AT-89C51 BASED RACE RANKING DISPLAY

192. MICROCONTROLLER AT-89C2051 BASED COUNT DOWN TIMER

193. MICROCONTROLLER AT-89C2051 BASED AUTOMATIC FLUSHING SYSTEM

194. MICROCONTROLLER BASED TEMPERATURE INDICATOR

195. MICROCONTROLLER AT-89C2051 BASED AUTO FISH FOOD FEEDER FOR AQARIUM

196. MICROCONTROLLER BASED CONDUCTIVITY METER

197. MICROCONTROLLER BASED SMOKE DETECTOR FOR POLLUTION CHECKING

198. MICROCONTROLLER BASED BIDIRECTIONALVISITOR COUNTER (ENTRY/EXIT)

199. MICROCONTROLLER BASED WEIGHING SCALE

200. MicroController Interfaced to four relay

201. MicroController Interfaced to ADC and LCD

202. MicroController Interfaced to eight LED's and eight switches

203. Mobile Phone Operated Robot

204. MicroController based Office Automation for Saving Electricity

205. Mobile Phone based Device Control

206. PC Operated Device Control

207. Digital Security Lock

208. DC Motor Speed Control using PC serial port

209. Mobile Phone Operated Surveillance Robot

210. Wireless PC Controlled Robot

211. Exam Timing Automation with Voice Indication

212. MicroController based XY Positioning System

213. Automatic Paper Evaluation System

214. Electronic Score Board for Basket Ball

215. Computerized Drilling Machine

216. Prediction and Prevention System to Avoid Train Collision

217. 3 element boiler drum level controller

218. Automatic college bell

219. Automatic Railway Signaling System

220. Automation of Poultry Farm Using Micro Controller

221. Autonomous Robot for Military Applications

222. Baby Incubator Parameters Monitoring and Control System

223. BUS IDENTIFICATION SYSTEM FOR BLIND

224. Categorized Alarm Annunciator

225. Intelligent Steam bath Control System

226. Irrigation Robot

227. Level Measurement Using Ultrasonic

228. Mcs-5 Based Street Light Control

229. Micro controller based Dam control system for power Generation

230. Micro Controller based data logger for restaurants and canteens

231. Micro Controller Based Energy saver and auto switching using IR sensors

232. Micro Controller Based Energy Saver Using GSM Technique

233. Micro Controller based gas plant monitoring system

234. Micro Controller based Library Management System

235. Micro Controller based milk collection system for dairies

236. Micro Controller Based Office Automation Using GSM Techniques

237. Micro Controller based robotics arm control using GSM

238. Micro Controller based wireless automation of Power Substation using GSM techniques

239. Microcontroller Based Automated Guided Vehicle (AGV)

240. Microcontroller Based Automatic Door Opening With Password Protection

241. Microcontroller Based Fuel Injection System for Automobiles

242. Microcontroller based maximum demand controller for industry

243. Microcontroller Based Process Control System

244. Motion Sensing System (IR Sensor)

245. MOVEMENT TRACKING USING SHAPE DETECTION

246. Pacemaker Demonstration -Non-Microcontroller Based

247. Pc Based Automation Of Chemical Plant For Chemical Mixing Using Solenoid Valves

248. Pc Based Remote Batch Counting And Control System.

249. Remote Process Controlling Using GSM Techniques

250. RF Control of Motors

251. Robot for Defense Applications

252. Robotics arm for drilling application with PC interface

253. Robotics arm for test tube filling application with PC interface

254. Sensor-Actuator Interfaces For Microcontroller - -Channel

255. Six Channel Petrochemical Fire Monitoring & Control Station

256. GSM Based Air Conditioner Controlling System

257. Speed Control of AC Motors using 8051

258. Syringe Filling Robot

259. Weight Integrator for conveyor belts

260. Wireless Controlled Robotic Vehicle with Mine (Magnetic) Detection

261. Wireless Stepper / Dc Motor Control

262. Wireless Weather Monitoring Robot Interfaced To PC

263. Micro Controller based washing machine

264. Micro Controller based autonomous cleaning robot

Bharadwaj MINI PROJECT LIST

S No. Circuit Name 1 Antisleep Alarm for Students 2 Four-Stage FM Transmitter 3 Numeric Water-level Indicator 4 Versatile Probe 5 Security System Switcher 6 Electronic Candles 7 Pyroelectric Fire Alarm 8 Telephone Call Recorder 9 DuoPhone 10 Mini UPS System 11 Car-Reversing Horn With Flasher 12 Short-Circuit Protection in DC Low-Voltage Systems 13 Inverter for Soldering Iron 14 Transistorised Logic Probe for TTL 15 Constant-Current Battery Charger 16 Multitone Siren 17 Generator Room Light 18 Liquid Level Alarm 19 PC Power Manager 20 Skin Response Meter 21 Solar Panel based Charger and Small LED Lamp 22 Electronic Bicycle Lock 23 Remote-operated Master Switch 24 USB Power Socket 25 Triple Power Supply 26 Smart Hearing Aid 27 Midnight Security Light 28 Automated Alarm Circuits 29 Traffic Baton 30 Laser-guided Door Opener 31 Battery-level Indicator 32 PC Temperature Controller 33 Traffic Controller 34 Night Alert 35 Muscular Stimulator 36 Wireless Switch 37 Long-Range IR Transmitter 38 Electric Window Fence Charger 39 Three-Phase Appliance Protector 40 PC Multimedia Speakers 41 Aquarium Probe 42 Bicycle Indicator 43 Poor Man’s Hearing Aid 44 Portable Lamp Flasher 45 Staircase Light With Auto Switch-Off 46 Car Anti-theft Guard 47 USB Power Booster 48 Smart Vibration Sensor 49 Drinking Water alarm 50 GLOW PLuG CONTROLLER 51 Versatile CMOS TTL Logic And Clock Probe 52 Tester For Remote Control 53 Automatic Low-Power Emergency Light 54 Mobile Bug 55 LED Lighting for Christmas 56 Current Sensor 57 Seismic Sensor 58 Dice With 7-Segment Display 59 Motorbike Alarm 60 Laptop Protector 61 Shutter Guard 62 Desktop Power Supply 63 Mobile Shield 64 Infrared Firecracker Igniter 65 Automatic Phase Changer 66 Flying Saucer 67 Anti-Collision Rear Light 68 Light Fence 69 MAT Switch 70 5-Band Graphic Equaliser 71 Clock Timer 72 Fully Automatic Emergency Light 73 IR Music Transmitter and Receiver 74 Electronic Horn 75 Ultrasonic Proximity Detector 76 Secret Bell 77 Variable Power Supply Using a Fixed-Voltage Regulator IC 78 Appliance Timer-Cum-Clap Switch 79 Telephone-Operated Calling System 80 Front Door Guard 81 Bell-Cum Light Controller 82 Friendly Charger for Mobile Phones 83 Hearing Aid 84 Speed Control of DC Motor Using Pulse-Width Modulation 85 Remote-Controlled Fan Regulator 86 Low-Power Voltage Doubler 87 Parrot-Sounding AC Doorbell 88 Multi-Melody Generator With Instrumental Effect 89 School-College Quiz Buzzer 90 Visual AC Mains Voltage Indicator 91 Simple Short-Wave Transmitter 92 Solar Lighting System 93 Infrared Bug 94 Picnic Lamp 95 Versatile Power Supply 96 Ultrasonic Proximity Detector 97 Shadow Alarm 98 IR Burglar Deterrent 99 Versatile Water-Level Controller 100 Automatic-Off Timer For CD Players 101 Heat-Sensitive Switch 102 Sensitive Vibration Detector 103 Digital Dice 104 Remote-Controlled Power-Off Switch 105 Little Door Guard 106 Stress Meter 107 Teleconferencing System 108 Medium-Power FM Transmitter 109 Smart Cellphone Holder 110 Fuel Reserve Indicator For Vehicles 111 Brake Failure Indicator 112 Safety Guard 113 Mains Supply Failure Alarm 114 Remote Control For Home Appliances 115 Micromotor Controller 116 Solar Bug 117 Simple Digital Security System 118 Digital Audio/Video Input Selector 119 Auto Turn-Off Battery Charger 120 Atmel AVR ISP Dongle 121 Audio Amplifier for Personal Stereo 122 Musical Light Chaser 123 Hit Switch 124 Water-Level Controller 125 Fire Alarm Using Thermistor 126 Electronic Watchdog 127 Automatic School Bell 128 Anti-Theft Alarm For Bikes 129 DC Motor Control Using A Single Switch 130 Solidstate Remote Control Switch 131 Flashing-Cum-Running Light 132 Quality FM Transmitter 133 Stabilised Power Supply With Short-Circuit Indication 134 Digital Stop Watch 135 Cell-Phone-Controlled Audio/Video Mute Switch 136 PC-Based DC Motor Speed Controller 137 Child's Lamp 138 Watchman Watcher 139 Highway Alert Signal Lamp 140 Low-Cost Electronic Quiz Table 141 Mobile Cellphone Charger 142 Smart Foot Switch 143 Programmable Timer for Appliances 144 Anti-Bag-Snatching Alarm 145 LED-Based Message Display 146 Multiband CW Transmitter 147 Automatic Night Lamp With Morning Alarm 148 Touch Dimmer 149 Mosfet-Based Preamplifier for FM Radio DXing 150 Non-Contact Power Monitor 151 Remote-Operated Musical Bell 152 Electronic Motor Starter 153 Telephone Receiver 154 Washing Machine Motor Controller 155 Low-Cost Hearing Aid 156 Over-Under-Voltage Protection of Electrical Appliances 157 Parallel Telephone With Secrecy and Call Prevention 158 Voltage-Based Controller For Switches 159 DTMF Receiver IC MT8870 Tester 160 Pulse Generator 161 Infrared Remote Control Timer 162 Clap Switch 163 Multi-Switch Doorbell With Indicators 164 Song Number Display 165 Lead-Acid Battery Charger With Voltage Analyser 166 Electronic Security System 167 Three-Colour Display Using Bicolour LEDs 168 Ultra-Bright LED Lamp 169 Computerised Universal Timer 170 Number Guessing Game 171 PC-Based Oscilloscope 172 Intruder Radio Alert System 173 Flashing Beacon 174 Knock Alarm 175 Automated Traffic Signal Controller 176 Infrared Toy Car Motor Controller 177 Mains Manager 178 Crystal-Controlled Time-Base Generator 179 Mains Operated Christmas Star 180 Music On-Hold For Telephones 181 Solidstate Switch For DC-Operated Gadgets 182 Ding-Dong Bell 183 IR Remote Switch 184 Shortwave Transmitter 185 FM Booster 186 Laser Torch-Based Voice Transmitter And Receiver 187 Mobile Phone Battery Charger 188 Fastest Finger First Indicator 189 Condenser Mic Audio Amplifier 190 DarkRoom Timer 191 Speller Effect Sign Display 192 Stereo Tape Head Preamplifier For PC Sound Card 193 A Hierarchical Priority Encoder 194 Digital Mains Voltage Indicator 195 Water-Level Controller 196 Invisible Broken Wire Detector 197 Anti-Theft Security For Car Audios 198 Simple Telephone Ring Tone Generator 199 Versatile Zener Diode Tester 200 DTMF Proximity Detector 201 Under-/Over-Voltage Beep for Manual Stabiliser 202 15-Step Digital Power Supply 203 Auto Shut-off For Cassette Players And Amplifiers 204 House Security System 205 Generation Of 1-Sec. Pulses Spaced 5-Sec. Apart 206 9-Line Telephone Sharer 207 Musical ‘Touch’ Bell 208 Automatic Heat Detector 209 Single Phase Electronic Starter 210 Precision Amplifier With Digital Control 211 Precision Attenuator With Digital Control 212 Infrared Electronic Shooting Game 213 Telephone Ringer Using Timer ICs 214 Blown Fuse Indicator 215 Automatic Speed-Controller For Fans and Coolers 216 2-Line Intercom-Cum-Telephone Line Changeover Circuit 217 Low-Cost PCO Billing Meter 218 Telephone Line Based Audio Muting And Light-On Circuit 219 Power-Supply Failure Alarm 220 Add-On Stereo Channel Selector 221 Parallel Telephones With Secrecy 222 Telephone Number Display 223 Luggage Security System 224 Precision Digital AC Power Controller 225 Phone BroadCaster 226 Telephone Call Meter Using Calculator And COB 227 Telephone Conversation Recorder 228 Universal High-Resistance Voltmeter 229 Protection For Your Electrical Appliances 230 Simple Code Lock 231 Time Switch 232 Digital Speedometer 233 Long-Range FM Transmitter 234 Self-Switching Power Supply 235 Electrical Equipment Control Using PC 236 Teleremote Control 237 Low-Cost Transistorised Intercom 238 Charge Monitor For 12V Rechargeable Lead-Acid Battery 239 Cordless Phone Backup 240 Sleep-Switch Cum Wake-up Timer 241 Simple Analogue To Digital Converter 242 Dual-Channel Digital Volume Control