There are 91 circuit schematics available in this category. Click here for all circuit diagrams. The Last circuit was added on Saturday, January 28, 2023.Please note some adblockers will suppress the schematics as well as the advertisement so please disable if the schematic list is empty.

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CircuitCategoryDate AddedOK?Votes 
Autopilot: Do it yourself UAVModelsSep 10, 2024Status7 vote up vote down
Simple RC car for beginners (Android control via Bluetooth)ModelsJun 14, 2024Status0 vote up vote down
STM32 RC car (Android control via Bluetooth)ModelsJun 14, 2024Status2 vote up vote down
Android controlled RC Vehicle with real-time video (Bluetooth & Wi-Fi)ModelsJun 14, 2024Status-2 vote up vote down
Build A Roomba Bluetooth AdapterModels Status-2 vote up vote down
Traffic light controller with 20-output sequencingModelsSep 10, 2024Status0 vote up vote down
5 Times Around CircuitModelsSep 10, 2024Status2 vote up vote down
Fast Electronic Circuit Breaker for Model RailwaysModelsNov 13, 2024Status0 vote up vote down
Automatic - Railway Grade Crossing Circuit (2008 design)Models Status0 vote up vote down
Audible Train Approach Warning CircuitModelsSep 10, 2024Status1 vote up vote down
Across The Track Infrared DetectorsModelsSep 10, 2024Status0 vote up vote down
Automatic Reversing Circuit for Model TrainsModelsNov 13, 2024Status-1 vote up vote down
Block Occupancy Detector For DCCModels Status1 vote up vote down
Rail Crossing Diamond Protection CircuitModelsSep 10, 2024Status1 vote up vote down
Automatic Railway Grade Crossing FlashersModelsSep 10, 2024Status1 vote up vote down
Incline Railway Control CircuitModelsJan 01, 2025Status-1 vote up vote down
Model Railroad Odometer CarModelsSep 10, 2024Status0 vote up vote down
Turnout Anti-Derail Protection CircuitsModelsSep 10, 2024Status-1 vote up vote down
Single Traffic Light Driver CircuitModelsNov 13, 2024Status0 vote up vote down
Various Transistor Throttles Cicuit SchematicsModelsSep 10, 2024Status-1 vote up vote down
Three Terminal Regulator Type Throttle (LM350K)ModelsSep 10, 2024Status0 vote up vote down
5 Second Ramp Generator for Locomotive Sound Card DemonstrationModels Status1 vote up vote down
Adding External Meters to DC ThrottlesModels Status1 vote up vote down
Grade Crossing Bell Ringer (LM555)Models Status0 vote up vote down
Train Mounted Camera Battery ChargerModels Status2 vote up vote down
Timed Uncoupling Ramp Driver (LM555)ModelsSep 10, 2024Status0 vote up vote down
DCC To DC - Accessory Power SuppliesModels Status0 vote up vote down
Grouped DCC Block Occupancy DetectorsModelsSep 10, 2024Status1 vote up vote down
Model Railroad - Infrared Proximity SwitchModels Status2 vote up vote down
First Across The Line Race Scorer CircuitsModelsSep 10, 2024Status-1 vote up vote down
School Bus Signals CircuitModelsSep 10, 2024Status-1 vote up vote down
LED Out Circuit For Tortoise Switch MachinesModels Status0 vote up vote down
Timed DC ThrottleModelsSep 10, 2024Status0 vote up vote down
DCC - Zero Stretching Simulator (LM555)ModelsSep 10, 2024Status0 vote up vote down
A Receive Signal DecoderModelsOct 30, 2024Status1 vote up vote down
27MHz toy car receiver L4=9 turns, .15mm wire on 4.5mm diameter tunable ferrite coil formerModelsApr 12, 2024Status-1 vote up vote down
Model Train Diesel & Horn Sound ModuleModelsMar 30, 2024Status0 vote up vote down
Hexbot robot based on a PIC including source code and circuit diagramModelsMay 16, 2024Status-3 vote up vote down
Beam robot / insect based on a PIC16F818 microcontrollerModelsMay 24, 2024Status0 vote up vote down
Toy car hack to turn it into a synthetic rodentModelsMay 24, 2024Status0 vote up vote down
Relay interface to R/C receiversModelsMay 25, 2024Status-1 vote up vote down
Various radio control schematicsModels Status-3 vote up vote down
PIC-Bot II using Microchip PIC16LF84Models Status0 vote up vote down
A selection of robotics projectsModelsJun 09, 2024Status0 vote up vote down
Collection of BEAM robot circuitsModelsSep 01, 2024Status-2 vote up vote down
Locomotive signal braking moduleModels Status1 vote up vote down
Simple Traffic Light ControllerModels Status0 vote up vote down
Electronic millipede robotModelsFeb 21, 2025Status0 vote up vote down
Circuit for three axis robot arm based on stepper motors out of 5 1/4" drivesModelsNov 10, 2024Status-1 vote up vote down
0-10V control for RC servosModelsJan 26, 2025Status0 vote up vote down
PC Controlled RC car construction projectModels Status0 vote up vote down
Robotic microcontroller boardModelsJan 31, 2025Status0 vote up vote down
Acceleration Sensing - gesture controllers for robotic musical instrumentsModelsJan 09, 2025Status1 vote up vote down
Distance Sensing - devices for wireless distance and position determinationModelsJan 09, 2025Status0 vote up vote down
Doppler radar based gesture measurement system capable of delivering positional informationModelsJan 09, 2025Status0 vote up vote down
Pad launch controller for model rocketsModelsJun 17, 2024Status0 vote up vote down
Simple flashing light circuitModelsJan 26, 2025Status0 vote up vote down
Simple flashing light circuitModelsJan 26, 2025Status0 vote up vote down
A dual alternating flashing light circuitModelsJan 26, 2025Status-1 vote up vote down
Simple flashing light circuitModelsJan 26, 2025Status0 vote up vote down
A dual tandem flashing light circuit powered by a 9 volt batteryModelsJan 26, 2025Status0 vote up vote down
Simulate the Gyralite (dual flashing headlights).ModelsJan 26, 2025Status0 vote up vote down
Moderately complex train detector using an infrared LED and an infrared detectorModels Status0 vote up vote down
Simple train detector using ambient light and a photocellModelsJan 26, 2025Status0 vote up vote down
Deriving power from Lego NXT motor port AModels Status0 vote up vote down
External power supply for Lego NXTModels Status0 vote up vote down
Wire guidance sensorModels Status1 vote up vote down
GP2D12 distance sensorModels Status0 vote up vote down
Lego compatible, compact rotation sensorModels Status0 vote up vote down
R/C digital camera controllerModelsMar 01, 2025Status1 vote up vote down
R/C helicopter cameraModelsOct 30, 2024Status0 vote up vote down
Circuit diagram for connecting the SRF08/10/235 sonar modules to the BS2p Basic StampModels Status0 vote up vote down
Model rocket launch controllerModelsNov 02, 2024Status0 vote up vote down
Making a FRED photopopperModels Status0 vote up vote down
RF Modem Robotics ProjectModelsJan 06, 2025Status-1 vote up vote down
Simplest R/C circuitModels Status-2 vote up vote down
Glowplug driver for radio control modelsModels Status0 vote up vote down
Two tone train hornModelsJan 26, 2025Status0 vote up vote down
Motor walker circuitModelsNov 16, 2024Status0 vote up vote down
R/C Emergency locator alarmModelsJul 24, 2024Status0 vote up vote down
Angelfire rocket GPS payloadModelsSep 10, 2024Status0 vote up vote down
Multi Rocket LauncherModelsNov 27, 2024Status0 vote up vote down
Model rocket launch controllerModelsNov 27, 2024Status-1 vote up vote down
Model Railway Short-Circuit BeeperModelsJul 15, 2024Status0 vote up vote down
Model Railway Turnout ControlModelsJul 22, 2024Status0 vote up vote down
Railway Points SequencerModelsOct 22, 2024Status0 vote up vote down
555 Based Switch for R/C receivers can be used without loss of R/C channelsModelsMay 01, 2024Status0 vote up vote down
Build a High Speed NiCd Charger for Electric R/CModelsOct 15, 2024Status0 vote up vote down
Build a Miniature High-Rate Speed Control with Battery Eliminator Circuit (BEC)ModelsOct 15, 2024Status0 vote up vote down
Build a Miniature High-Rate Speed Control with BrakeModelsOct 15, 2024Status2 vote up vote down
Home built glow plug ignitor and remote controlModelsOct 16, 2024Status0 vote up vote down