Output Devices
Group assignment
- Measure the power consumption of an output device
Power consumption
Power consumption refers to the electrical energy per unit time, supplied to operate something, such as a home appliance.
Is usually measured in units of watts (W) or kilowatts (kW).
We used Isma's Charlietree from last week to do this test. We used a multimeter set in mA (Ammeter), which will show us the consumption of a circuit or a component.
These are the values that it has thrown without animation:
As shown, it fluctuates from 13.18. to 14.36mA. Whith animation these are the values:
It fluctuates from 19.02 to 18.09mA.
Conclusions!
After we measure the CharlieTree (you can see more here ) current consumption, Without animation it took a max of 20mA, when the animation was On the value was variant but always lower than 20mA.
The idea is to power it from two AA batteries that have about 2000 to 3000 mAh of capacity, using two I will get a total capacity of 4000 mAh divided for the consumption of 20mA it will have 200 hours of constantly been On.
As I intended to program the animations to be active for 30 minutes and then enter sleep mode on the AtTiny45, until the next night it will give me a 400 night circles, more than a year of working! That's nice! We will see the real world data In a while...