There are 91 circuit schematics available in this category. Click here for all circuit diagrams. Last circuit added on Thursday, 30 July 2015.

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CircuitCategoryDate AddedOK?Votes 
Autopilot: Do it yourself UAVModelsSep 10, 20060
AVR Line Following RobotModelsMar 25, 2009-2
Simple RC car for beginners (Android control via Bluetooth)ModelsJun 14, 20150
STM32 RC car (Android control via Bluetooth)ModelsJun 14, 20150
Android controlled RC Vehicle with real-time video (Bluetooth & Wi-Fi)ModelsJun 14, 2015-1
Build A Roomba Bluetooth AdapterModels 0
Traffic light controller with 20-output sequencingModelsSep 10, 20060
5 Times Around CircuitModelsSep 10, 20061
Fast Electronic Circuit Breaker for Model RailwaysModelsNov 13, 20100
Automatic - Railway Grade Crossing Circuit (2008 design)Models 0
Audible Train Approach Warning CircuitModelsSep 10, 20060
Across The Track Infrared DetectorsModelsSep 10, 20060
Automatic Reversing Circuit for Model TrainsModelsNov 13, 20100
Block Occupancy Detector For DCCModels 0
Rail Crossing Diamond Protection CircuitModelsSep 10, 20060
Automatic Railway Grade Crossing FlashersModelsSep 10, 20060
Incline Railway Control CircuitModelsJan 01, 20030
Model Railroad Odometer CarModelsSep 10, 20060
Turnout Anti-Derail Protection CircuitsModelsSep 10, 20060
Single Traffic Light Driver CircuitModelsNov 13, 20100
Various Transistor Throttles Cicuit SchematicsModelsSep 10, 20060
Three Terminal Regulator Type Throttle (LM350K)ModelsSep 10, 20060
5 Second Ramp Generator for Locomotive Sound Card DemonstrationModels 0
Adding External Meters to DC ThrottlesModels 0
Grade Crossing Bell Ringer (LM555)Models 0
Train Mounted Camera Battery ChargerModels 1
Timed Uncoupling Ramp Driver (LM555)ModelsSep 10, 20060
DCC To DC - Accessory Power SuppliesModels 0
Grouped DCC Block Occupancy DetectorsModelsSep 10, 20060
Model Railroad - Infrared Proximity SwitchModels 0
First Across The Line Race Scorer CircuitsModelsSep 10, 20060
School Bus Signals CircuitModelsSep 10, 20060
LED Out Circuit For Tortoise Switch MachinesModels 0
Timed DC ThrottleModelsSep 10, 20060
DCC - Zero Stretching Simulator (LM555)ModelsSep 10, 20060
A Receive Signal DecoderModelsOct 30, 20020
27MHz toy car receiver L4=9 turns, .15mm wire on 4.5mm diameter tunable ferrite coil formerModelsApr 12, 20140
Model Train Diesel & Horn Sound ModuleModelsMar 30, 20100
Hexbot robot based on a PIC including source code and circuit diagramModelsMay 16, 20100
Beam robot / insect based on a PIC16F818 microcontrollerModelsMay 24, 20100
Toy car hack to turn it into a synthetic rodentModelsMay 24, 20100
Relay interface to R/C receiversModelsMay 25, 20120
Various radio control schematicsModels 0
PIC-Bot II using Microchip PIC16LF84Models 0
A selection of robotics projectsModelsJun 09, 20020
Collection of BEAM robot circuitsModelsSep 01, 20090
Walking robotModelsAug 14, 20020
Locomotive signal braking moduleModels 0
Simple Traffic Light ControllerModels 0
Electronic millipede robotModelsFeb 21, 20050
Circuit for three axis robot arm based on stepper motors out of 5 1/4" drivesModelsNov 10, 20090
0-10V control for RC servosModelsJan 26, 20010
PC Controlled RC car construction projectModels 0
Robotic microcontroller boardModelsJan 31, 20030
AVR Line Following RobotModelsMay 19, 20150
Java Bot - Simple line follower robotModelsJun 19, 20110
Acceleration Sensing - gesture controllers for robotic musical instrumentsModelsJan 09, 20100
Distance Sensing - devices for wireless distance and position determinationModelsJan 09, 20100
Doppler radar based gesture measurement system capable of delivering positional informationModelsJan 09, 20100
FailureBot 5 - A Line Following RobotModelsNov 16, 20100
Pad launch controller for model rocketsModelsJun 17, 20030
Simple flashing light circuitModelsJan 26, 20010
Simple flashing light circuitModelsJan 26, 20010
A dual alternating flashing light circuitModelsJan 26, 20010
Simple flashing light circuitModelsJan 26, 20010
A dual tandem flashing light circuit powered by a 9 volt batteryModelsJan 26, 20010
Simulate the Gyralite (dual flashing headlights).ModelsJan 26, 20010
Moderately complex train detector using an infrared LED and an infrared detectorModels 0
Simple train detector using ambient light and a photocellModelsJan 26, 20010
Deriving power from Lego NXT motor port AModels 0
External power supply for Lego NXTModels 0
Wire guidance sensorModels 0
GP2D12 distance sensorModels 0
Lego compatible, compact rotation sensorModels 0
R/C digital camera controllerModelsMar 01, 20030
R/C helicopter cameraModelsOct 30, 20020
Slot car TV cronograph displays the lap times of your model cars on a regular TVModels 0
Circuit diagram for connecting the SRF08/10/235 sonar modules to the BS2p Basic StampModels 0
Model rocket launch controllerModelsNov 02, 20100
Making a FRED photopopperModels 0
RF Modem Robotics ProjectModelsJan 06, 20020
Simplest R/C circuitModels 0
Glowplug driver for radio control modelsModels 0
Two tone train hornModelsJan 26, 20010
Motor walker circuitModelsNov 16, 20020
R/C Emergency locator alarmModelsJul 24, 20020
Angelfire rocket GPS payloadModelsSep 10, 20060
Multi Rocket LauncherModelsNov 27, 20020
Model rocket launch controllerModelsNov 27, 20020
Model Railway Short-Circuit BeeperModelsJul 15, 20150
Model Railway Turnout ControlModelsJul 22, 20150