====== Electronics ======

[[https://www.digikey.com/en/resources/online-conversion-calculators|Online Conversion Calculators by Digi-Key]]

===== NTC =====

Links found on page: [[https://thecavepearlproject.org/2016/06/09/better-thermistor-readings-with-an-arduino-series-resistors-aref/|Tutorial: Better Thermistor Measurement on Arduino via Series Resistors & Aref]]
  * [[https://edwardmallon.files.wordpress.com/2017/04/ntc-steinhart_and_hart_calculator.xls|Steinhart and Hart Calculator]]
  * [[https://www.thinksrs.com/downloads/programs/Therm%20Calc/NTCCalibrator/NTCcalculator.htm|Thermistor Calculator]]

[[https://electronics.stackexchange.com/questions/51908/selecting-bias-resistor-for-thermistor|Selecting bias resistor for thermistor]]

===== Transistors =====

[[https://kaizerpowerelectronics.dk/calculators/transistor-base-resistor-calculator/|Transistor Base Resistor Calculator]]

===== Capacitors =====
  * [[https://sparks.gogo.co.nz/capacitor-formulae.html|Multiple capacitance calcs]
  * [[http://mustcalculate.com/electronics/capacitorchargeanddischarge.php|Capacitor charge and discharge calculator]]
  * [[https://www.digikey.com/en/resources/conversion-calculators/conversion-calculator-capacitor-safety-discharge|Capacitor Safety Discharge Calculator]]
  * [[http://www.learningaboutelectronics.com/Articles/Capacitor-charge-calculator.php|Capacitor Charge (Charging) Calculator]]


====== Energy ======

===== RMS =====
[[https://www.allaboutcircuits.com/tools/rms-voltage-calculator/|RMS Voltage Calculator]]



===== Energy =====

  * [[http://hyperphysics.phy-astr.gsu.edu/hbase/electric/capeng.html|Energy Stored on a Capacitor]]
  * [[http://www.calctool.org/CALC/eng/electronics/capacitor_energy|http://www.calctool.org/CALC/eng/electronics/capacitor_energy]]

====== Photovoltanic / Solar ======
[[https://www.timeanddate.com/sun/poland/wroclaw|Sunrise, Sunset, and Daylength]]

[[https://photovoltaic-software.com/solar-tools/dc-ac-drop-voltage-calculator|AC and DC electrical wire voltage drop and energy losses]]

====== Battery ======

[[https://www.digikey.com/en/resources/conversion-calculators/conversion-calculator-battery-life|Battery Life Calculator]]