Theory & general info
- Wikipedia, the free encyclopedia (ask any question)
- How Infrared motion detector components work (with schematic)
- A good tutorial on NE555 timer
- RMS power explained
- How a transistor astable flip-flop works
- Electronics Tutorial
- Free Online Dictionary for Computing
-
How
transistor astable circuit works --- (1)
How transistor astable circuit works --- (2) - How transistor astable circuit works --- (3)
Hobby Projects & Circuit Sites
- Infrared PIR Motion Detector using KC778B IC (pdf)
- Sensors / Detectors: Temperature Sensors
- INFRARED REMOTE CONTROL TESTER (pdf)
- Electronics Circuits Reference Archive
-
Circuits Library
PIC courses
- Good tuturial on 16F84 – (1)
- Good tuturial on 16F84 – (2)
- Yet Another PIC Programming Tutorial
- Guide to use the PIC (with projects)
- PIC Instruction Set Summary
- PIC 16/17 questions & answers
- PIC Projects for Students and hobbyists
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How to control a HD44780-based Character-LCD
Datasheet & application note search
Electronic Calculators
- Capacitance-Frequency-Inductance CALCULATOR - for filter calculations
- dbm-Voltage-Impedance CALCULATOR
- Resistance-Frequency-Capacitance CALCULATOR - for filter calculations
- The Electronics Calculator Website - calculations for basic electronics calculations like resitors, inductors, capacitance and RC constant time
- Voltage-Current-Resistance-Power CALCULATOR
- Zener Voltage Regulator CALCULATOR