Questions tagged [power]
This tag is for questions regarding powering and/or power consumption of Arduino systems.
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How to keep track of millis during sleep mode
In my application, I need to keep track of the time the application has been running as well as use sleep modes. However, when using the sleep modes, Timer0 is disabled, and therefore millis stop ...
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How to power Arduino pro mini and DFPlayer mini togather with 3.7 V LiPo battery?
I made a small box containing Arduino Pro Mini , DFPlayer Mini player and a 3.7V LiPo battery. Is it possible to power two devices with 3.7 V Battery?
What is the best way to save power for longer ...
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How to power 6 servo motors using battery to create a robotic arm?
I am trying to create a robotic arm. The problem is that I could not run all 6 servo motors -3 MG966r servo motors and 3 MG90S servo motors - simultaneously, using 12V and 3A AC to DC adaptor. Last ...
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Understanding the variation of Arduino's current consumption with respect to the voltage supply
Even though this is already a well-debated topic, I couldn't find an extensive discussion about what really is drawing so much power in Arduino's board.
Here is the preamble: I have an Arduino Mega ...
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NodeMCU Power Draw and charging Circuitry
I am planning to build a small wireless keyboard, around 5 buttons and 1 rotary encoder, that will connect via WiFi to my Spotify account. For this project, I was looking at the Node MCU for the board....
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Vin pin vs USB vs Barrel connector: Wemos D1 R2
@Majenko says in the leading (19 Upvote) answer here not to use VIN and USB socket at the same time.
You must never ever connect VIN to a power source and connect the USB socket. That can destroy ...
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Power save Sleep Mode Arduino
I'm trying to use this example link
source:
#include <avr/sleep.h>
/* Sleep Demo Serial
* -----------------
* Example code to demonstrate the sleep functions in an Arduino.
*
* use a ...
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Arduino nano getting powered through analog input?
I noticed something today. I am powering the Arduino Nano from a battery and a 5v step up converter. That works just fine and I'm getting a stable 5v output. I have a second cable coming out from the ...
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Inductive spikes upset Interrupts
I am using an Arduino Uno to create a kinetic sculpture with magnets and electromagnets (EMs). I have a setup with two externally debounced buttons using resistors,capacitor and CMOS 4584 hex inverter....
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ESP8266 light sleep - can't wake up
I am attempting to implement a light sleep mode on an esp8266 (feather huzzah) which, when a button is pressed, wakes the system up so that it can continue its normal task.
I cobbled together some ...
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WS2812B LED Stripe going crazy with Arduino and External Power Supply
I have a simple connection here:
A WS2812B 5m 300 leds strip 5V;
A Power Supply MS-150-5 150W 5V;
Arduino with a simple code to blink 10 first leds;
TEST:
If I connect my power supply to my LED ...
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Is it possible to overload the digital pins for an Arduino?
I worked on an Arduino project for school that was a self-driving security robot that also acted as a smart home system.
It was essentially a self-driving Roomba-like car that included several LED's(...
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Using RST pin as external power switch
I have Arduino Nano with powered over USB. I have the request for external (physical) slide switch acting as power on/off for Arduino even if USB is always connected.
Looking at documentation and ...
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External vs arduino power supply for servo motors?
I recently created a project that involves the control of three SG90 servo motors. I started off by controlling this through the 5V output pin of the Arduino Uno, with the Arduino powered through the ...
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How to achieve smooth motion with a servo motor?
I'm trying to control the MG995 servo motor with an Arduino Uno, but the motion achieved by the motor is kind of erratic. The servo motor is externally powered from a 2200mAh 7.4V 30C LiPo battery ...
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Rechargeable USB "AA" Batteries. Has anyone used them?
I have a cosplay project where I'm creating a "Megaman" aka Rockman type of arm cannon (it's actually based on DC's Cyborg). Anyhoo, I've been weighing options like using 3xAA alks or 4xAA nicd (or ...
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Problems running Arduino project off a 9V battery
I have been working on an Arduin Uno Rev2 project for a while now. I have been developing using my MacBook, downloading code through the USB jack running it, monitoring the serial output on my MacBook,...
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Reading I2C data from SW6106 register
I am using the SW6106 powerbank IC as an I2C but no matter what I have tried I couldn't read something other than "FF".
Datasheet for the IC.
Timing diagram for reading data:
Timing diagram for ...
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Saving Power :: Reducing Power Consumption
For Arduino Nano 33 IoT, I want to turn off everything except Bluetooth and Wireless since I don't use them.
My question please: Can I switch off / deactivate the IMU sensors completely? If yes, How ...
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Servo motor troubles
The image is as clear as I can make it.
Here are the basics of my problem. My program is meant to make 6 red LED lights in sequence fade in and out, toggle 5 white LED's on and off with a button, and ...
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Arduino "Phantom Powering"
I am using an Arduino Uno in my project. I recently found that if I disconnect the power from my Arduino (I am powering it by USB port, from a 5V regulator - 7805), then it remains under power from ...
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Motor driver shield l239D should be giving enough power but it doesn't
I am doing a line follower robot using motor driver shield l239D stacked with an Arduino uno to run 2 DC motors and two infrared sensors. I am supplying 12V to the motor driver shield trough three ...
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Arduino Nano IoT Power Consumption
I am trying to reduce the power of my Arduino Nano IoT. I would like to run it using a battery over a longer time period. I thought this would be possible when putting it to sleep most of the time. ...
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how do i know what battery(how much ampere and voltage) my circuit needs to work perfectly?
i really love to make a lot of things but i always have this problem that i don't know how can i determine what battery(with how much voltage and amp)my circuit must have to work perfectly! please ...
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Cannot power up Arduino Uno + Ethernet Shield with other than computer USB
I have successfully wrote a sketch for Ethernet Shield and Arduino. If I plug it into computer's USB, it works.
But if I plug into any other power source, like USB power adapter from iPhone or ...
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Part identification [closed]
This may be a dumb question but i would like to know what this part is. Anyone who knows?
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5V on HIGH Digital Pins, Only While Using USB Power
So I have a small problem with my Arduino Pro Mini here. May be worth noting that it is a clone, but otherwise this is still some weird functionality. I have done some experimenting so I'll just set ...
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how can i conect a lipo charger to a teensy 4.0?
I have the battery charger product https://www.adafruit.com/product/2124
and a teensy 4.0, that I would like to use to power it.
what, if any pin would I connect from bat, to the teensy?
Its my ...
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LowPower.idle isn't waiting
I am trying to have my Arduino wait in a low power idle state given by the LowPower library made by rocketscream on an Uno. However, when I try to have it wait for 8 seconds, it seems to not pause at ...
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MB-102 BreadBoard Power Supply Limitation
Does the MB-102 can handle Arduino Uno, SIM900 and 3 other modules that requires 5v? If yes, does 9v battery is enough? If no, please suggest me what should I use that uses only 1 barrel jack(if ...
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powering Nodemcu using Vin
Forgive me for this really dumb question. I am an amateur in electronics, and im trying to wrap up my head around this question and im not able to do so. Need your help.
Im trying to power up a ...
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Alternative for IRF520 mosfet in Arduino shutdown schema
I’am using IRF520 mosfet according to this schema to shut down Arduino by low level on output to 10K ohms resistor
Schema of my device is
The issue is that IRF520 took too much place
Is it possible ...
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How can I power an Arduino Nano with a LiPo battery, preferably 3.7v
I am a newbie to Arduino, so please bear with me. I am trying to figure out how to power an Arduino Nano with a LiPo battery. I want to use a 3.7v if possible, as my project needs to be lightweight. ...
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How can I power an ESP8266 using a 9V 1A barrel connector power supply?
I have a Huzzah Feather ESP8266 (pinout) and due to the requirements of my project, I need to supply it with a 9V power adapter with a barrel connector, such as this one. I'm REALLY new to all of ...
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Power Source for Arduino
So I have SIM900 Shield and Arduino Uno and they have both power jack, is it possible to power one of them using one power jack and connect it's power with another? If it is possible, I sincerely need ...
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What is the maximum power consumption of the Arduino Nano 3.0?
What is the maximum power consumption (in mW) of the Arduino Nano 3.0, when it is running in its default state (at 16MHz, no LEDs removed) and powered by an external regulated 5V supply so it bypasses ...
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Powering an Arduino with more than 5 V
Last time, when I supplied 12 V from a power supply to the Arduino's 5V pin, it blew up. This time I'm going to use an adapter. Why does an adapter with a 12 V input not blow an Arduino up, ...
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How to power both arduino and 1 color led strip from single power source
I'm trying to understand and adapt this tutorial:
https://learn.adafruit.com/rgb-led-strips/current-draw
to my own use. I am doing essentially the same thing, except I have this single color LED ...
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Hook Arduino up with thermal printer and power both externally
Disclaimer: I have no connection to adafruit.
A friend and me want to build a little project. We want to connect an arduino to a thermal printer and then print out little fortune-cookie like messages,...
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Can I force Arduino not to be powered by USB?
I'm building a 3D printer and I'm using an ATmega2560 + RAMPS board.
The whole thing is powered by an ATX PSU (12v for motors and stuff, 5v for the Arduino), but when I plug in my USB cable, I can't ...
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DS3231 High Power Consumption
I plan to use my Arduino with a small battery all the time so I don't want it to use so much power. I was checking power consumption of DS3231 with a multimeter, at first it was fluttering around 1 mA ...
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Press On Hold Off Power Switch
Hi everyone I am hoping someone here can help me.
I am trying to make an arduino turn my project on and off.Using a relay.
I am looking for it to act like a computer power button.
A short press to ...
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Connecting arduino ground with battery powered remote control ground
I soldered a cable to the button of a remote control and I want to simulate that button press by setting the pin to input mode and back to output (LOW) again.
For this to work I connected the ground ...
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Measure current across shunt resistor (Power Analysis)
I am trying to reproduce the side-channel power analysis attack described in this paper: https://pdfs.semanticscholar.org/7946/a8ee82658e2ffb017270331f220a55f5ace6.pdf for educational purposes.
The ...
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Low power error with serial connection
So I want to create an application where I can send data with a SIM-Module, and when it's not needed it should fall into a "standby-mode" because it's battery powered. But I always get this exact ...
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Powering Multiple Servos From One Battery- What is my circuit missing?
I'm working on a robotics project right now and my limited DIYer knowledge of electrical circuits is failing me. I need to power 7 Rage Standard Metal Gear Servos (RGRS104-16-6vm) and 4 RadioShack ...
CommunityBot
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SD-Card-Module doesnt work with external power supply
Problem description
I am trying to build a datalogger with an Arduino UNO. I have connected a SD card module to the Arduino. I have planned to catch the measurement data from the analog input pins. ...
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Determine if Arduino is rapidly pulsed on and off several times
Greetings fellow humans!
I've set myself the task of ascertaining whether an Arduino has been rapidly power cycled to force it into a setup state, a feature common with many IoT devices. So I ...
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24v LED strip with common anode?
I have a 5m strip of 24v tunable white LEDs and I'm trying to figure out what I need set it up. There's a pad for V+ and then one for brightness and one for warmth. If I plug the V+ in V+ on a 24v ...
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Motor shield power from Arduino pro mini 5v RAW Pin 150mAh cannot run servo
linked to my old question, Pro Mini 5v with Adafruit motor shield v1 power sharing problems
I figured out and use one 7.2v battery (6 AA cells), and link it with RAW pin to Pro mini and join its 5v ...
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