Electronics for Makers: LED Resistors, Dividers, ADC Scaling, Thermistors, RC Timing & PWM
Calculate the parts for microcontroller projects: resistors, sensor readings, timing, PWM and a project power budget, with every cell checked as you go.
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About this course
In this course you calculate the parts for a fictional greenhouse monitor built around a microcontroller. You size LED series resistors, pick standard E12 values and check resistor power. You design voltage dividers for an analog input, convert ADC counts into volts and sensor values, and turn thermistor readings into temperatures with the Beta equation. You work out RC time constants, charge curves, debounce times and a blink frequency, map PWM values to average voltage, gamma-corrected brightness and servo pulses, build a power budget with regulator heat and battery runtime, and price a small run with price breaks.
Lessons
- LED Series Resistors: Ohm's Law, E12 Values & Resistor Power Pro
- Voltage Dividers for an Analog Input: Ratios and Resistor Pairs Pro
- ADC Resolution: Counts, Volts per Step and Sensor Values Pro
- Thermistors: From ADC Count to Temperature with the Beta Equation Pro
- RC Timing: Time Constants, Charge Curves, Debounce & Timer Frequency Pro
- PWM: Duty Cycle, Average Voltage, Gamma-Corrected Brightness & Servo Pulses Pro
- Power Budget: Average Current, Regulator Heat & Battery Runtime Pro
- Bill of Materials: Order Quantities, Price Breaks & Cost per Unit Pro