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Questions tagged [power]

This tag is for questions regarding powering and/or power consumption of Arduino systems.

0
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0answers
24 views

Sleep function disrupts functions (I think) / Need to disable “sleep” while function is running

I have posted this problem on the Arduino Forum. I am at my wits-end trying to sort this problem out. I have tried to post the code etc here, but am a new member to this forum. The complete code etc ...
0
votes
0answers
30 views

Breadboard power supply voltage changes on restart

I bought this Arduino starter kit from Amazon. The problem I have now is that the voltage supplied by the breadboard adapter seems to change every time I turn it off and on. And not by small amounts ...
1
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0answers
36 views

LED strip with 12v power connected to ESP32

I'm looking at controlling a ws2811 strip and I have seen mention that you should share the same ground between the strip and the controller, which does make sense. I do not currently have a proper ...
1
vote
1answer
46 views

Arduino Power Consumption

I am pairing an Arduino Uno along with both a HC-05 bluetooth module and a sensor circuit. Show below is the circuit conditions as well as the circuit. As far as powering up the system, I am ...
0
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0answers
34 views

Why did I burn my buck converter?

I am (was) using an adafruit LM3671 buck converter to power a 3.3v pro mini. I set it up as follows: GND to ground 3v to the arduino. Vin to the positive of a 3x1.5v battery En directly bridged to ...
1
vote
1answer
52 views

Creation of multiple power cells to be controlled by Arduino [closed]

I'm fairly new to the Arduino world, but have a history of good working knowledge of computers and software (I'm a software engineer), but I've only had the opportunity so far to create a few simple ...
0
votes
1answer
33 views

How would I go about powering addressable RGB LED light strip? [Arduino Nano] [closed]

The addressable RGB LED I have is WS2812B. I plan on controlling the LEDs via an Arduino nano. I have a total of 188 LEDs to supply power to. Would I require anything between the addressable RGB LED ...
0
votes
3answers
57 views

How can I get my (Arduino) Pro Micro schematic to allow me to program it through GPIO instead of USB

I'm trying this project so far I've got the schematic of a Pro Micro, which is powered through GPIO from a Raspberry Pi Zero, and want to remove the micro usb connection and able to flash it using an ...
0
votes
1answer
15 views

Getting at the PS_ON pin on a RAMPS1.4 mounted to a Mega

Got it! Check end of post for solution. I'm running a Mega 2560 with a RAMPS 1.4 Shield which is usually used for 3D printing applications. For my use case I only want to get at the stepper motor ...
0
votes
1answer
32 views

Arduino clone woks only with USB - NOT with external power

I have an Arduino UNO ch430 clone. It works with USB power supply, I can upload a Sketch and it works just fine. With external power supply, doesn't work. What do I mean? No LED lights up, high pins ...
0
votes
1answer
16 views

Powering Adafruit motor shield

Making sure not to blow anything up before testing. I have an adafruit motor shield and an arduino Uno. The arduino uno has a power input and I was hoping to use it to power the motor shield, a nema-...
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0answers
14 views

Some SIM800L commands do not work

I'm working on a simple project using the SIM800L and the arduino nano. Since the SIM800L requires up to 2A, I've tried a variety of different power solutions in order to provide enough current (...
0
votes
2answers
28 views

How to upload a sketch to Arduino if it goes to deep sleep mode quickly

I have created sketch where Arduino goes to powerdown mode in about 1s after boot. Now I can not upload other sketch, because programmer does not get proper response. I tried to hold reset and release ...
-1
votes
1answer
37 views

Broken Arduino Uno, works over USB but cannot take DC in

My Arduino Uno (r3) board seems to be broken. It can still be powered over USB, and can store/run code properly, but the DC power in system appears to be crippled. I'm not entirely sure what happened, ...
1
vote
3answers
31 views

Do I need the Ground and 5 V pin connect to Led?

I am building an ambilight. So I bought a 3 pin LED Strip which I power with the USB hub from my TV. Next step is to connect it to the Arduino Nano. Is it OK when I only use the dataport from the ...
0
votes
1answer
32 views

Arduino Pro Micro TX and RX leds flash quikly while power drawn from VCC pin

I just got a 5V Arduino Pro Micro, which I connected to an RC RX powered from the VCC and GND pins of the board. However, whenever I do so and power on the board from a computer USB connection or a ...
1
vote
2answers
49 views

Arduino pow() making 9's

I am having a temporary lapse of judgement, or not understanding how the power method works, but when I put 10 to the power of a number, it is that value -1. So: 10*10 = 100 Then I would assume, 10^...
0
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0answers
41 views

Powering issues causing reset

I am making a project with a few leds, a water pump, and a few stepper motors. The board seems to reset when a few of the elements are on at the same time indicating a significant voltage drop. ...
-1
votes
1answer
98 views

ESP32 Dimmable LED Panel with MOSFET [closed]

I want to use ESP32 to control and use a dimmer for 6 LED panels in my bedroom. The specification of each panel is mentioned in the diagram. Although in the diagram it shows ONLY 1 MOSFET and 1 LED ...
0
votes
1answer
61 views

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 ...
0
votes
0answers
39 views

powering Feather with 5vdc into battery connector

I'm incorporating a HUZZAH32 (part of Adafruit's Feather line) into a small system, where it will be powered from a 5vdc power source. The obvious way to connect the 5vdc is to the USB pin (the 5v pin ...
0
votes
1answer
69 views

RGB LED strip 100m [closed]

Hello all, I'm working on RGB LED strip SMD 5050 5m This all setup is working on 12v 2A with about diagram. I want to use same connection with 100m of LED strip using Arduino. Please support ...
0
votes
1answer
41 views

Solenoid “vibrates” instead of pushing

I'm using my Arduino Uno to control a 5V 1A solenoid. I'm using an N-Channel MOSFET linked to the Uno's 0 pin to switch the solenoid on and off. It is protected by a Schottky diode. Initially, I ...
2
votes
2answers
57 views

Arduino UNO socket

As I learnt so far is that Arduino UNO board has a socket for power input. The available power input range is between 7V - 20V, but the optimal usage range is 7V-12V. Here I am wondering: ---> if ...
0
votes
2answers
134 views

Wake up ESP8266 from deepSleep with a button

I have a button with two isolated tracks. I want to be able to wake up esp from deepSleep with this button, and also detect that it was clicked. So i can't connect it to reset, because esp won't work ...
0
votes
1answer
48 views

reduce power consumption for esp8266 in access point mode

esp8266 acting as a access point , question is how to reduce power consumption in this case? I don't think i can use sleep modes here in this case.
0
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0answers
20 views

Powering the adafruit motor shield externally

I have an adafruit motor shield v2.3 that needs to be powered externally without plugging it in the arduino UNO. For example, I program the shield with the UNO, plug it out and put it on a custom ...
0
votes
1answer
20 views

Interfacing 4 ESCs and an Arduino with a single LiPo battery

I have 4 BLDC motors, and 4 ESCs, one for each motor. But I have one LiPo battery from which I want to power one Arduino Mega and all the 4 ESCs. Can I remove the connectors from the ESCs and put them ...
0
votes
1answer
22 views

SIM808 return the same AT command

I am using atmega 2560 and SIM808. When I send an AT command to SIM808 it returns correctly. But sometimes I have seen that SIM808 returns the same AT command. Sometimes it occurs due to lack of power ...
0
votes
1answer
78 views

Battery voltage monitor right after deep sleep

i have my esp32 module in deep sleep and i use it with a couple of buttons using a wake up that detect the button pressed now i'd like to have a battery level to send to a server right before going ...
1
vote
1answer
27 views

Powering arduino and node mcu [closed]

I want to power up my Arduino and my Nodemcu via 12 V , 1 A power adapter (it's an AC to DC power Adapter). Recently I have two voltages regulators: a 5 V for nodemcu and 9 V for Arduino Uno. The ...
0
votes
1answer
76 views

Arduino YUN Rev. 2 power supply

I want to connect my YUN Rev. 2 to 7.4V. I read that the older version only provides exactly 5 V at the Vin Pin. Is the Rev. 2 similar to it? I read that the power supply should be improved, but what ...
0
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0answers
18 views

USB OTG to arduino using another power source [duplicate]

First off: I know some similar questions have been asked, but I think my question has not been answered yet. I am working on a way to controll my LEDs via my Android phone, which works, by connecting ...
0
votes
2answers
42 views

Choosing a proper power source for for basic RC car with 4 motors [closed]

Help me to choose a power source for the below project: 4x DC Motors (3V~6V DC each with ~170mA), 1x Micro Servo Motor (4.8V~6V), 1x Ultrasonic sensor 1x Bluetooth sensor It is basically an RC car. ...
0
votes
1answer
64 views

Are these relays connected correctly?

I currently have limited electronics experience. I am planning to use mains power through relays for climate control, so considering the risk, I would like to check to see if these relays are ...
0
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1answer
30 views

Connecting 2 arduino on same ground

I'm working project which consist of 2 arduino running a 2 different sketch, However, can i make these 2 ic to run on same power +ve and same ground?
-3
votes
2answers
117 views

1-10 volt analog signal

I have an Arduino project where I am using an ESP8266 (Wemos D1 mini) powered via USB. I want/need to output an analog voltage from 0 to 10V. Goal: A solution that is pre-made (eg a shield or ...
0
votes
1answer
50 views

Are any Arduino boards especially suited for low-power operation?

The Arduino project has done an excellent job in providing a portable software interface to a number of different hardware systems. Are there any Arduino-compatible systems which are especially ...
0
votes
1answer
32 views

MAX232 chip fails to initialize properly with arduino

I have connected a MAX232 chip for RS232 communication with my Arduino. The chip input is connected to Arduino Tx and it is getting power from external 3.3 volt dc power source. My Arduino is also ...
5
votes
1answer
70 views

Converting a standard setup/loop sketch to a low power application?

Suppose I have a typical setup/loop style sketch, such as this one which turns on an LED when a button is pressed. How do I modify this so that it enters low power mode, awakes on the button press, ...
-1
votes
1answer
38 views

H bridge with transistors not enough power [closed]

I am making an autonomous car from an old RC car. For the steering I made my own H-bridge, consisting of 2 PNP and 2 NPN transistors. When I connect everything, the motor works fine. But it hasn't got ...
2
votes
1answer
47 views

Sending data over two independently powered arduinos

I have multiple arduinos that are each powered by a 12v battery through a 5v regulator. All arduinos share a common ground. Can I simply connect the digital output from one arduino into the digital ...
-2
votes
1answer
43 views

How to power an arduino nano [closed]

I am trying to power an Arduino nano connected to an LCD screen. I want it to work without connecting it to a computer. Please let me know if the connections aren't clear in the photos. I have a 5&...
0
votes
2answers
84 views

Use 5V SD-Adapter on 3.3V System

I want to use a Catalex Micro SD Card Adapter in Combination with my Arduino MKR GSM 1400. The problem is, that the Arduino uses 3.3V to operate but the SD Adapter needs 5V (or at least 4.5V) to ...
0
votes
1answer
44 views

The need to use logic level converter

Why do we need level logic converter to have 5V or 3.3V? Because in Arduino Uno/Mega (don't know about other boards), they already provide 5V and 3.3V for us to use.
0
votes
1answer
352 views

Trying to power 100 Arduino's from single power line [closed]

I'm trying to power up to 100 Arduinos that will be spread across a 25m wall using a single power line. The idea is each Arduino will have a few a few buttons, leds & an oled screen and will all ...
1
vote
2answers
119 views

Connecting Arduino Arduino to MOSFET

I want to use my Arduino Nano to control a 12V peristaltic pump via a BDX33c N-Channel MOSFET. The pump has a maximum current draw of 1,4 A. The Arduino (via VIN) and the pump are powered by a 12V ...
-1
votes
1answer
36 views

Repair Arduino with too much voltage exposure

I have used the 5V pin instead of the Vcc pin to operate some sensors on the Arduino MKR GSM 1400. Altough the operating voltage is 3.3V.Because of that it doesn't work properly anymore, some analog ...
1
vote
2answers
57 views

How should you predict the battery size required for a project?

I am using an Arduino nano along with an ESP8266. The nano is connected to an OLED display and a keypad. The ESP8266 uploads the data entered from the keypad onto a server. I wish to make the device ...
0
votes
1answer
46 views

Is SRAM erased when putting Arduino into sleep_mode_pwr_down?

Question In the interest of reducing power consumption, I am putting the Arduino into sleep mode between taking sensor readings. However, the data from readings are stored in arrays, and must not be ...