Questions tagged [power]
This tag is for questions regarding powering and/or power consumption of Arduino systems.
907 questions
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ESP8266 Not Booting Properly on First Power On – Works After Restart
I'm working on an ESP8266-based water level monitoring system using an ultrasonic sensor and an I2C LCD. The problem I'm facing is that sometimes the ESP8266 does not boot properly when powered on for ...
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Communication vs Power Arduino
If I want to use an external power source to power up my Arduino through the raw pin and connect its ground to the ground of the Arduino (Arduino Pro Micro), but need to also have USB connected to my ...
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Using arduino to power another usb device
Can I configure an Arduino Uno as a power source to recharge a USB device while being powered by another external power device? I asked ChatGPT for input and it gave me this code:
#include <USBHost....
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Sleep and Wake Arduino Nano 33 BLE
I'm trying to figure out how to wake up and put to sleep the Arduino Nano 33 BLE. I have seen a few post about it but absolutely nothing I can understand or implement. I'm attaching a subset of the ...
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Powering SG90 Servo with 18650 battery
I want to power one SG90 servo with an 18650 3.7v battery. Since the working range for the servo is 4.8v-6v, I used XL6009 boost converter and got a 5.8v output. I have measured it with my multimeter. ...
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Arduino Nano max current from 5v pin if using 5v 1A wall adapter
I read several answers, but those can be confusing, because it depends on how you provide power to the Arduino.
What if I use a wall adapter with 5 V / 1 A and connect it directly to the Arduino Nano ...
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3
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91
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How can I improve the power supply for my Arduino-based sensor system?
I am working on an Arduino-based sensor system that includes a temperature sensor, a humidity sensor, and an LCD display. Everything works fine, but I am facing issues with power stability when I run ...
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354
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ATmega328PB Sleep Mode Current Consumption
I am using an ATmega328PB to run an RF module. When testing sleep mode current consumption, I noticed it was much higher than I expected. I took off all unnecessary components. The only things in the ...
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RS485 message edit on the fly between EV charger and energy meter
I am trying to connect Feyree smart EV charger with Dynamic Load Balancing to DTSU666 smart meter via RS485.
Dynamic Load Balancing is a function of EV charger that lets you dynamically change charger ...
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99
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Why can my computer not see my Arduino Uno?
I've plugged my ELEGOO Uno R3 into a USB port on my computer with a USB cable. However, neither Arduino IDE nor my computer can see the device. When the Uno is connected, it shows no connected devices....
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762
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How to power 2 MG996R towerpro servo
I am a beginner and tried powering MG996R Tower Pro (180 deg Metal Gear) Servo from Arduino UNO and ended up hibernating the host PC.
I want to power 2 such motors (in parallel configuration) for lets ...
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209
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Code review for timer using RTC and OLED screen
I am building a small art project to display my current age with an accuracy of 1/100th of a second. I am using a XIAO SAMD21, a DS3231 RTC, and a 128x32 OLED screen. Here is what it looks like right ...
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398
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Increase in power consumption after brown-out detection (BOD)
I'm working on a low-power energy harvesting project, where I'm considering using an ATtiny85 to perform some minor tasks. The ATtiny is put in Power Down mode most of the time and does not consume ...
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ATtiny25 - assembly - BOD disable for sleep mode - error [closed]
If I understood the AVR instruction manual correctly, the ATtiny 25 can disable the BODlevel2 fuse by software, but when compiling with Studio 7 (version 7.0.132), I get the error "Undefined ...
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6 V high-torque servo won't function with motor shield
I have only ever been able to get this servo to “somewhat” work when connected to the 5 V pin on the shield, the ground on the shield, and the signal line attached to whatever pin.
But 5 V is not ...
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