There are 32 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 
Snore alarm electronic deviceMedicalAug 14, 2024Status5 vote up vote down
TENS Circuit diagram for muscle stimulationMedicalSep 23, 2024Status5 vote up vote down
Heartbeat Sensor (Tranduscer)MedicalJan 08, 2025Status1 vote up vote down
Tiny EEG interface schematicMedical Status-1 vote up vote down
OpenEEG open hardware EEG projectMedical Status-2 vote up vote down
Electronic StethoscopeMedicalSep 01, 2024Status2 vote up vote down
Digital pedometer circuit diagramMedicalFeb 21, 2025Status-1 vote up vote down
Heartbeat transducer using infrared LED / detectorMedical Status0 vote up vote down
ECG amplifier with right leg driveMedical Status1 vote up vote down
Optical Heart Rate MonitorMedicalSep 10, 2024Status-2 vote up vote down
Model 2030 XRAY monitor instruction manual including schematics (PDF)MedicalSep 13, 2024Status3 vote up vote down
Brain-Wave MachineMedicalNov 27, 2024Status2 vote up vote down
Cranial Electrotherapy Stimulation (CES) circuit diagramMedical Status-1 vote up vote down
Lie detectorMedicalOct 30, 2024Status4 vote up vote down
Simple lie detectorMedicalOct 30, 2024Status0 vote up vote down
Positive Feedback Circuit for Isometric Muscle ExperimentsMedicalNov 05, 2024Status1 vote up vote down
PC based biofeedback monitorMedical Status3 vote up vote down
Heart rate sensorMedicalOct 06, 2024Status-2 vote up vote down
Wireless Electrocardiogram MonitorMedicalOct 06, 2024Status0 vote up vote down
Galvanic Skin Response (GSR) CircuitMedical Status1 vote up vote down
Heart Rate Monitor based on a dual op-amp ICMedicalJul 22, 2024Status2 vote up vote down
Transcutaneous Electrical Nerve Stimulator (TENS)MedicalJul 22, 2024Status0 vote up vote down
Tablet Reminder That Uses Watch ModuleMedicalJul 22, 2024Status1 vote up vote down
Cranial Electrotherapy Stimulator Circuit DiagramMedicalJul 22, 2024Status7 vote up vote down
Sleeping aid circuit diagramMedicalJul 22, 2024Status-1 vote up vote down
Digital Step-Km Counter Circuit SchematicMedicalJul 22, 2024Status1 vote up vote down
ECG Amplifier using TLC274 opampMedicalOct 22, 2024Status0 vote up vote down
Pulse rate monitor using TLC274 opampMedicalOct 22, 2024Status-1 vote up vote down
Pills reminder alarm using CMOS logic gatesMedicalOct 22, 2024Status3 vote up vote down
PC-based heart rate monitor using Arduino and Easy Pulse sensorMedicalApr 30, 2024Status-1 vote up vote down
Electronic Stethescope Amplifier CircuitMedicalSep 14, 2024Status-1 vote up vote down
DIY ECG Patient Simulator / ECG TesterMedicalOct 29, 2024Status-5 vote up vote down