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Questions tagged [power]

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

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0answers
11 views

Powering 2 servo motors [on hold]

I am new to electronics and can't figure out how to power 2 servos. I know that each one needs 5V and around 700mA. I guess I must use a 5V and 1.4 A power supply. Is that correct? What would ...
1
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0answers
36 views

How to filter the power supply for an Arduino in a vehicle (car, motorcycle)?

I want to use an Arduino (maybe Nano, maybe MEGA) in my motorcycle (a new KTM with lots of electronics). I checked my test circuit (with the MEGA) and it uses about 100mA (with 5V connected to the 5V ...
0
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2answers
42 views

How can I discard power from a device I want to read from?

I want to read the data line from a device that normally interfaces with a controller. It has 3 pins, 3.3v power, gnd, and data. I don't need the power line since the Arduino will be USB powered and I ...
0
votes
1answer
16 views

H Bridge for microcontroller power management?

Is it fine to use L298 N Dual H Bridge Stepper Motor Driver Module to control power of other ICs in a multiple microcontroller setup? I intend to reduce power consumption in by powering communication ...
0
votes
1answer
31 views

I'm getting NaN for readings on my DHT22 sensor when using 3v3 pin, but not 5v pin

I have a DHT22 temperature sensor and DS1302 RTC module connected to the 3v3 pins on an Arduino Nano. Both the sensor and the RTC module are rated to work on either 3.3V or 5V, but the recommendation ...
0
votes
0answers
21 views

DOIT Dev Kit V1 (esp32) as PCA9685 power supply [closed]

I'm attempting to connect 8 servo motors to my esp32 Dev Kit and control them with the PCA9685. The problem is the Dev Kit doesn't have a 5v output to power the pca9685 but I'm wondering if it's ...
0
votes
1answer
21 views

Powering an Arduino directly from a motor driver (DRV8825) or external power source?

Hello people from StackExchange, I'm new to Arduino and driving stepper motors in general; please excuse me for my limited knowledge on the subject. I've been doing research for a few hours already, ...
1
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3answers
53 views

Arduino Uno with 6x 5V solenoids + 9V battery - Not enough power?

I have 6 5V solenoids connected to an Arduino Uno, each of them with a TIP120 transistor, diode and resistor. Exactly like https://core-electronics.com.au/tutorials/solenoid-control-with-arduino.html ...
2
votes
5answers
2k views

Why is Arduino resetting while driving motors?

I am driving motors for my line-follower project . The circuit schematic is given below The power source is a 11.1V 2200mAh 25C Lipo . Practically the cells give 11.5-12V. I used a switching buck ...
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0answers
24 views

Arduino Due Atmel IC heats up

When i tried powering the board the Atmel IC heats up and led goes of after a second .the board does not get detected on my IDE software . 1) I have tried out finding the issues with the board and ...
1
vote
1answer
27 views

How do I supply either (1) dual voltage or (2) negative voltage? [closed]

Sorry in advance if this question already exists--I tried to search but my keyword knowledge is shaky. I have created a Colpitts oscillator on breadboard using AA batteries as the power supplies. I ...
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0answers
18 views

Arduino powering to control sensors

I would like to know if it's possible to power up arduino by VIN pin (say 9v) and use 5v output pin to connect to a sensor. Many thanks
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2answers
36 views

Will a 12 VDC 1A Power Supply Adapter supply too much power and damage an Arduino Mega 2560?

The specs shown here: show that it has 54 digital pins with each outputting a DC current of 20mA which makes it 54 * 20 = 1080 mA Plus the DC current of the 3.3V Pin of 30mA we get a total of 1110mA....
0
votes
1answer
53 views

NodeMCU ESP32s can't get Vin to work?

Trying to power the board with a 9V battery through VIN. As the documentation says, it can take input voltage of 6-12 Volts, but when I connect the 9V battery, all it does is power the board on and ...
0
votes
1answer
37 views

Will this buck converter power my arduino? [closed]

I'm thinking of using something like this: https://www.amazon.ca/Dolity-Converter-Isolated-Switching-Transformer/dp/B07CSZ1174?SubscriptionId=AKIAILSHYYTFIVPWUY6Q&tag=duc12-20&linkCode=xm2&...
-1
votes
1answer
36 views

Power external daughter board from Arduino only powered by USB?

Been searching for an answer, but I see lots of talk about it, but not clear answers. Can somebody clarify this? If I power the Arduino only via USB, can I put a small daughter board? and power it ...
1
vote
1answer
35 views

Can you use an Arduino to control the output current and voltage of a DC/DC converter?

I am using an arduino to create a device that outputs a specific current and voltage. I was wondering if there are any devices out there such as dc/dc buck boost converters that can be controlled by ...
1
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0answers
27 views

3 phase 3 wire/3 phase 4 wire [closed]

I am looking for a circuit where I would be able to use a common circuit for 3 phase 3 wire and 3 phase 4 wire. Is there any conversion IC available? I have attached image for reference used in some ...
1
vote
0answers
16 views

Having trouble with motor shield running off external power source

I apologize if I don't immediately give important info, I'm very new to arduino's/circuity of any kind. I'll try to include as much info as possible. Some preface: I'm currently working on a project ...
-1
votes
2answers
44 views

Powering L298N drivers from mains power supply [closed]

I am powering 2 stepper motors with an L298N driver each (from a 9V 2A external power supply powered from the mains: https://www.amazon.co.uk/BERLS-Power-Adapter-Elegoo-Connectors/dp/B07GSM6YLX/ref=...
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votes
3answers
66 views

Arduino max power supply limit

What is the maximum current that can be supplied to an Arduino Mega board before frying/breaking? Basically i have several components connected to my board which draw a total current of 1.6A (which i ...
1
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1answer
45 views

How to subtract the current analog value from previous one [closed]

I pretty new to the Arduino. I am working on project that find the power by reading your
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0answers
39 views

Is successively toggling power on and off bad for microcontrollers

Does successively turning power on and off damage an Arduino or Adafruit Audio FX Sound Board in long or short term? I build a "fairy phone" out of an old rotary phone, an Arduino Pro Mini 3v3/8Mhz, ...
0
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0answers
16 views

Will this power supply work with a MG-996R Servo?

I'm trying to power a tower MG-996R servo with this universal AC power adapter for an arduino uno project. The adapter can output: 3V/4.5V/5V/6V/7.5V/9V/12V.Output current:1.2A, also has a USB port:5V ...
0
votes
1answer
55 views

Using Sleep AND LowPower.h

I am trying to set up the low power module for an instance case, I have installed the low power library but when I am using the line LowPower.powerDown (SlEEP_5S, ADC_OFF, BOD_OFF) ; It is ...
0
votes
1answer
41 views

Replace 6 pin on/off switch on Power Bank with 3pin or 2pin?

I'm looking to finish up my project in a box and i'm using a battery bank to power the Leonardo micro pro and other components. The bank has a little on/off which on it which has 6 pins underneath. ...
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votes
2answers
93 views

Recommendations for 24V to 5V AC/DC converter [closed]

I'm working on an ESP8266 thermostat that should be powered by the 24V AC from the furnace. I'm looking for a converter to 5V DC that would be small enough to fit in a smaller enclosure and not ...
1
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1answer
85 views

Powering a Tiny Arduino Project

I'm trying to build a tiny project. After I program the board, to power the dev board - how can I power it to run the code? Question: I was curious as to how I would be able to power the ATtiny85 ...
2
votes
1answer
41 views

Mega 2560 pin output power and control question

I am trying to determine the total pin power requirements for my Mega 2560 project; it will connect to 3 1m Neopixel strips and 5 RGB laser fiberoptic lights, and control them via PWM. Each strip and ...
0
votes
1answer
58 views

Arduino Power project question?

I saw a project on the Internet (the one in the photo), and I wonder, would it be a problem for me to connect the Vin and GND of the Arduino to the same place where the Servo Motors are being powered? ...
-1
votes
1answer
98 views

Can I power a Wemos D1 R2 via the VIN and GND pins?

Can I power a Wemos D1 R2 via the VIN and GND pins? If so, at what voltage?
0
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1answer
45 views

How to properly run 4 DC motors with an Arduino?

I am working on a project where I have 4 DC motors that is controlled by 2 L293D motor drivers. 2 of the motors act as the wheels of the robot, and the other 2 act as a mop. The Arduino board is ...
2
votes
0answers
101 views

TRIAC Pulse driver for Spot Welder (help needed with programming)

I have designed and built a transformer driver board for my spot welder. It is powered from mains electricity (230 V) and consists of the following segments: triac drive and protection, zero cross ...
0
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2answers
58 views

Arduino Micro draws too much power from iPhone. How can I change that?

I'm building a USB keyboard that has two buttons - space and enter. The plan is to use this USB keyboard (with an Apple Lightning connector to USB) with the built in iOS switch control. I bought the ...
0
votes
1answer
23 views

How to drive N channel gate correctly from Adafruit Feather pinout?

I am learning how to create a soft latch power switch, using an N channel mosfet. Currently, I have this: simulate this circuit – Schematic created using CircuitLab The idea is (so far) that ...
0
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0answers
18 views

Teensy 2.0 “device descriptor failed” with I²C sck+sda cable connected

I'm currently making a split keyboard, using a Teensy 2.0. I decided to make my two halves communicate over I²C, connected through a 4-cable audio cable. For that I got the following jacks: I used ...
1
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2answers
44 views

Leonardo - always on power, status remains between computer reboots?

I'm looking for two answer here. Is it possible to power a Leonardo to be always on, separate from the power from the USB host - I've tried with a full size Leonardo and a power adapter but for some ...
0
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2answers
117 views

ESP8266 Supply Voltage dropping below 3.3V

I am trying to power an ESP8266 with a 3.3V regulator (this one, can supply ~ 1A). I've been struggling for days to get the ESP to work – it will occasionally boot, occasionally connect, but then not ...
-1
votes
2answers
68 views

let Arduino limit it's own input power

My current project will be sitting next to a 12VDC power line. It seems a waste no to tap it to power into the Arduino board too. Now I read everywhere that with 12V input quite a lot power gets ...
0
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0answers
30 views

Differing behaviour from Arduino Nano when plugged into laptop vs power source

Well here's a weird one. I'm monitoring a mic on an analog pin of an Arduino Nano and using the variation in voltage to control and LED. When plugged in to my Laptop (USB 3, 500ma available, the ...
0
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1answer
22 views

Is there a relationship between RSSI and Power? If so, how are they connected and does it have a formula to extract one from the other? [closed]

I have searched on Google but to no avail. Perhaps you guys can help. -Aj
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0answers
171 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
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1answer
95 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 ...
1
vote
1answer
61 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
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1answer
58 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
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3answers
189 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
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1answer
46 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
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1answer
37 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 ...
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1answer
34 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-...
0
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2answers
67 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 ...