In this post we ll get to know the different power supply options for your project and how you can optimize your power consumption.
Measure power consumption arduino.
The first difficulty is to insert the shunt between the battery s positive power point and the raspberry s vin.
Comparing this values to the battery voltage i should get an idea of how much power consumption i have.
I was walking through the hardware store the other day and i walked past an energy meter which clips onto your home s electricity mains and then provides you with information on your power consumption and cost estimates for the month.
Power 5v 46 5ma 232 5mw.
Let s put arduino put to sleep.
Let s take the same arduino uno and run the sleep code.
Step 3 next using the adapter we connect the red probe from your multimeter to the plus terminal of your power supply.
It is pretty amazing to measure a raspberry with an arduino.
Arduino power supply is not always the first thing on your mind when you re planning a new project but it s definitely something you ll want to consider in the early stages of your project.
Using the formula power voltage x current.
Now that we have a good understanding of the hardware let us open the arduino and start programming.
The main objective of this project is power measurement to reduce peak on generation by providing customers with their instantaneous power consumption.
There is need for accurate and economic methods of voltage and current measurement using arduino.
We chose a less intrusive possibility by integrating it in the power cable.
Finally connect the gnd on your arduino uno to your power supply minus terminal.
The purpose of the code is to read the analog voltage on pin a3 and a4 and calculate the voltage current and power value and finally display it on the lcd screen.
The level of accuracy is enough.
The code i have wake up every few seconds upon watchdog timer timeout and toggle the onboard l led.
You integrate it directly on the raspberry board by cutting the circuit.
In a future implementation as an extension to this project i will design a new circuit based on voltage and current sensors for more accurate results.
Simple arduino home energy meter.
Arduino uno at 16mhz 5v 3.
Connect the black probe to the vin on your arduino uno.
Usually i measure the consumption using an arduino and its analogical pin.
In this case my idea is to attach to every component a relatively small resistor and see which is the voltage of this resistors.
