Questions tagged [power]
This tag is for questions regarding powering and/or power consumption of Arduino systems.
0
votes
1answer
12 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
votes
0answers
10 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
vote
2answers
30 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
votes
2answers
37 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 ...
0
votes
1answer
41 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
votes
0answers
26 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
votes
1answer
20 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
0
votes
0answers
33 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
vote
0answers
60 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
51 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
votes
0answers
37 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
56 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
46 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
72 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
23 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
36 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
21 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
votes
2answers
38 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
39 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
35 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
37 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
50 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^...
-1
votes
1answer
146 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
91 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
47 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
91 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
49 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
58 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
302 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
116 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
votes
1answer
25 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
27 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
113 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
28 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
119 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
votes
2answers
47 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
67 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
votes
1answer
31 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
151 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
34 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
72 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
40 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
46 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
124 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
57 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
354 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
158 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
37 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 ...
