In the below table are listed various electronic projects that I have worked on over time. Each project has been tested to at least the breadboard stage, whereas, many have been fabricated on either PCB or veroboard. In all cases, full details of the working circuit (including schematic diagrams, circuit descriptions, component selection) and any difficulties encountered during construction (and fixes, alternatives or work-arounds discovered) are given in detail.
Details of the various projects are available by clicking the links in the following tables which list projects by either category, project title or ID number.
Where I encountered new components, circuit ideas and or concepts I have not previously used, often I produced small test circuits to focus on learning the new item. Details of such experiments and learnings can be found on the Component Testing pages.
Sometimes I developed software (using either Visual Basic, Microsoft Access, CSS C++, or Excel spreadsheets) to help with various projects. Such programs, modules and or source code can be found on the Downloads pages.
|DIY Tools||Guassmeter||A Guassmeter (magnetic field strength) is constructed using a Hall Sensor, as an attachment for a DMM.||Medium|
|DIY Tools||ATX PSU Conversion||A lab power supply constructed from a ATX PSU.||Easy|
|DIY Tools||LED Strip Lighting||LED strip lighting for the workbench||Easy|
|DIY Tools||Digital Counter||A digital event/voltage pulse counter is constructed.||Easy|
|DIY Tools||Electronic Dummy Load||An electronic dummy load is constructed from "junk box" parts (tested up to 30V 5A)||Medium|
|DIY Tools||PCB Drill||A variable speed drill is constructed with drill press, laser sight and LED spot light, variable speed motor control (PCB drilling etc).||Medium|
|DIY Tools||DIY PIC Development Board||A DIY PIC microcontroller development board is constructed (incorporates the components tested/listed on this site).||Medium|
|DIY Tools||UV Light Box||Ultraviolet light box for exposing PCBs||Medium|
|Miscellaneous||Bar Downlighting||High power white LED's are used to make downlighting for the Bar||Easy|
|Miscellaneous||LED Garden Light||Solar powered garden lights for paths and highlighting.||Medium|
|Miscellaneous||Fruit/Food Dehydrator||A Fruit/Food dehydrator constructed from a heating element and a Peltier device (PIC microcontroller controlled).||Medium||Miscellaneous||Hydroponics Pump Timer||Timer/Controller for a 12V pump for dispensing hydroponic nutrient solution. Powered from 12V battery and solar cell recharging.||Medium||Miscellaneous||Infinity Mirror||Various forms of infinity mirror are constructed, from simply LEDs to microcontroller RGB LED versions.||Medium||Miscellaneous||PID Controller||A PID Controller for a heater is developed (PIC microcontroller).||Medium||Miscellaneous||DC Motor Control PWM||DC motor speed control using pulse width modulation (PWM) via 555 Timer IC circuit.||Easy||Miscellaneous||Spectrophotometer||A visible wavelengths spectrophotometer is constructed from a LED light source, DVD "diffraction grating", PIC microcontroller and LDR/phototransistor as detector.||Difficult||Miscellaneous||Desklamp conversion to LED||A desklamp (incandescent bulb) is converted to LED using a transformerless AC to DC supply and 350mA white LED's.||Medium||Miscellaneous||Ultrasonic Night Light||A white LED night light, that is activated by an ultrasonic sensor, with battery backup based on a joule thief circuit.||Medium|
|PIC Projects||DIY Dev. Board||DIY development board for using various PIC parts||Medium|
|PIC Projects||In-Circuit Serial Programming (ICSP) - Flashing a LED||Demonstrate the minimum circuit for a PIC microcontroller - In-Circuit Serial Programming (ICSP) and flashing a LED.||Easy|
|PIC Projects||Interface LCD to PIC||Basic circuit for interfacing a LCD to a PIC microprocessor||Easy|
|PIC Projects||Matrix Keypad connection||Connect a matrix keypad to a PIC microprocessor.||Easy|
|PIC Projects||Bar Sign (matrix LED display)||A Matrix LED (5 x (8x8) ie 320 LED’s) Display - used for an animated Bar Sign.||Hard||PIC Projects||Digital Thermometer||A digital thermometer (0-100oC) with 1-3 inputs, capable of RS232 output, constructed from PIC microcontroller/DS18S20 sensors.||Hard||PIC Projects||Spectrophotometer||A visible wavelengths spectrophotometer is constructed from a LED light source, DVD "diffraction grating", PIC microcontroller and LDR/phototransistor as detector.||Hard||PIC Projects||Bluetooth Garden LED Lights||PIC based project that uses a HC-05 bluetooth module to control LED's for garden lighting (with associated Android phone app).||Medium|
|Power Supplies||1.2-25V 1.5A Power Supply||Power supply using linear voltage regulator||Easy|
|Power Supplies||4A Power Supply||Power supply for larger size projects||Medium||Power Supplies||Using Wall Warts||Simple circuit for using 'wall warts'as mains power supplies||Easy||Power Supplies||Transformerless AC to DC||A transformerless AC to DC supply is constructed (for <100mA)||Easy|
|Power Supplies||ATX PSU Conversion||A lab power supply constructed from a ATX PSU.||Easy|
|Power Supplies||LM2596 Buck SMPS (3A 1.23-37V)||DC-DC step-down SMPS voltage regulator (variable 3A 1.23-37V)||Medium|
|Test and Measurement||Guassmeter||A Guassmeter (magnetic field strength) is constructed using a Hall Sensor, as an attachment for a DMM.||Medium|
|Test and Measurement||Electronic Dummy Load||An electronic dummy load is constructed from "junk box" parts (tested up to 30V 5A)||Medium|
|Test and Measurement||Digital Thermometer||A digital thermometer (0-100oC) with 1-3 inputs, capable of RS232 output, constructed from PIC microcontroller/DS18S20 sensors.||Difficult||Test and Measurement||Spectrophotometer||A visible wavelengths spectrophotometer is constructed from a LED light source, DVD "diffraction grating", PIC microcontroller and LDR/phototransistor as detector.||Difficult||Test and Measurement||Solar Cell IV-Curve Tracer||A IV-curve tracer for solar cells based upon DAC control of a MOSFET, controlled via PIC microcontroller and PC interface via RS232, with ESP8266 WiFi connection for sending data to web server.||Difficult|
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