Because it is the same MCU, the speed and memory size are the same. When you turn on the circuit, it starts with LED test, where the LEDs glow up sequentially with some delay. How many posts have there been discussing power down sleep mode, turning off unused components, P-channel FETs to turn off power to components, etc. After removing the voltage regulator, the power consumption is only 4.5 μA for the 3.3 V version and 5.8 μA for the 5 V version, in power-down sleep. Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.I realize this isn't exactly a direct answer to your question but how about attaching a small solar panel to a lithium battery so that the battery's self-discharge and daily power consumption are partly or entirely offset by the panel. Jan 28, 2018 - If you found this article after doing a search on Google, welcome! Using an Arduino Pro Mini, with a simple modification, the power consumption goes down to 54 μA (0.054 mA) with the 3.3 V version or 23 μA (0.023 mA) with the 5 V version, in power-down sleep.
You can find articles that bring the power consumption of the ATmega328P down to 100 nano ampere as Low Power Library - A Layer Above sleep.h, power.h, auto-disables Burn-out Detection (BOD) avr/power.h Library to Enable/Disable On-Board Peripherals Arduino Pro Mini Sugested USB-to-TTL Serial Convertor MCP1700 - Low Quiescent Current (about 2 μA @ 4 V input) / Low Dropout Voltage (LDO), 250 mA output, linear regulator, input 2.3 - 6.0 V, output 1.2 - 5.0 V datasheet MCP1703 - Low Quiescent Current (about 2 μA @ 4 V input) / Low Dropout Voltage (LDO), 250 mA output, linear regulator, input 2.7 - 16.0 V, output 1.2 - 5.5 V datasheet Arduino Pro Mini Regulator MIC5205 - KB50 / KB33 / KBAA Datasheet Atmega328P Power Reduction Down to 100 nano-amps (100 nA) How to automate your home and make it a Smart Home by letting Sensors and Actors communicate with single-board computers as Raspberry Pi, Arduino and others. Jan 09, 2015, 09:51 pm. (Read 8359 times) previous topic - next topic. The concept of using a stepper motor seems quite pointless unless the precise position can be maintained at all times.Two or three hours spent thinking and reading documentation solves most programming problems.Two or three hours spent thinking and reading documentation solves most programming problems.So if you re-read Nick's advice on low power, you should see how to time 24 hours: set a timer to wake up your Arduino at the longest period possible (8 seconds) and then use your own counter to count however many 8-second units you need. An Arduino Uno runs less than one day on a 9 V battery because it uses about 45 mA current.

And if they are not continuously powered they have no ability to hold position.

This will run for a few microseconds every 8 seconds, so it's a good power-saving multiplier. Even in dim light, 16 hours worth of it should trickle charge the battery enough to give you what you're looking for and it wouldn't exceed your "fit in the hand" footprint requirement.https://turbofuture.com/misc/The-Ultimate-Arduino-TutorialStepper motors are extraordinarily inefficient. R-Marked Guest; Arduino to last years on battery.

Topic: Arduino to last years on battery. If you want to depower them to save energy you will need some form of brake. So, to disable the LED, you need to make a small hardware modification by cutting one of the two tiny traces which connect to the power LED. ?Designing & building electrical circuits for over 25 years.
The calibration for this Arduino 6 LED battery level indicator circuit must be done carefully, if you did not calibrate correctly, the circuit will show incorrect voltage level of the battery. The Pro Mini also has the same I/O pins as the Uno. Hi, I've been looking at Arduino and this forum for a solution to a problem. That is 4 years on a 9 V battery with 1,200 mAh capacity or 2,000 times more efficient than the Arduino Uno. Without the power LED, the 3.3 V Arduino Pro Mini uses about 0.85 mA less, the 5 V version even 3 mA less. Typical current consumption of the Arduino Uno is 45mA, so if you have (say) 3 x AA cells (each with 2500mAH capacity) to give 4.5V to run the board then 2500 x 3 / 45 = 167 hours, or less than 7 days. Using an Arduino Pro Mini, with a simple modification, the power consumption goes down to 54 μA (0.054 mA) with the 3.3 V version or 23 μA (0.023 mA) with the 5 V version, in power-down sleep. ATTinyCore for x4/x5/x61/x7/x8/x41/1634/828/x313 megaTinyCore for the megaavr ATtinies - Board Manager:I would say yes, raschemmel. For some time I have been fascinated by the possibilities of the ESP8266, but I never really considered it good for a life on batteries.

I got an idea of making an outdoor weather station that would send … The ultra low power weather station. However the ATmega328P cannot control the power LED.

That is 4 years on a 9 V battery with 1,200 mAh capacity or 2,000 times more efficient than the Arduino Uno. All Arduino Pro Mini clones, that I came across, use the same voltage regulator, the A regulator that is very efficient at micro amp currents is the Microchip With the new regulator, you should be able to power the Pro Mini from one or two coin cells for a year or more. So you need this to last years on batteries without recharging?