Questions tagged [power]
This tag is for questions regarding powering and/or power consumption of Arduino systems.
817
questions
0
votes
1answer
15 views
Power supply for DIY Arduino CNC Router
I am making a CNC router from a dremel and 3-5 NEMA 17 steppers. I am really confused on how I can power all those motors. I am using a RAMPS 1.4 with Arduino Mega. I have a 2.4A USB power supply. Is ...
1
vote
0answers
20 views
Sim800L not working
I have been trying to set up the SIM800L. The LED is not blinking...
I am using the LM2596 to convert from 5V to 4.3V (I did try with 3.7 <= Vout <=4.3 V) to power the module. With a 5V/2A power ...
0
votes
1answer
29 views
Can I use and external power supply and USB at the same time on my Arduino?
Can I use the Arduino with an External wall-wart and the USB at the same time? I need to power more LEDs, and the USB on my computer can only supply so much. But, I didn't want to destroy my ...
2
votes
0answers
30 views
Low power USB C power supply
I am searching for a tiny board to that accepts an usb-c cable and outputs 5v.
To my understanding, for the few hundred milliamps two 5k1 resistors on the board would suffice. PD is not needed.
I ...
1
vote
1answer
26 views
Set control register to low in ds3231 rtc
I have been using ds3231 rtc module for keep tracking and make alarm along with backup battery. when I used it for first time it worked fine. but now it doesn't keep track my time when the power lose ...
0
votes
0answers
39 views
INT0_vect is slow?
I want to wake up my AtTiny45, but it looks like it needs a few nudges sometimes.
I have a pull down button connected to INT0. I made sure INT0 wakes up when the button is pressed, and as soon as the ...
1
vote
1answer
17 views
Servos jitter when powered by power module
I need 48 sg90 servos to move to a specific position each minute. Now I am using two arduino mega boards to power everything through 6 bread boards but it seems I need more power because some servos ...
8
votes
3answers
216 views
Measuring li-ion that arduino is running from
I am using a 5v Arduino pro mini (with regulator and power led removed).
I have been reading how to accurately measure Li-ion batteries when powering from the same battery you are trying to measure ...
1
vote
0answers
44 views
Arduino Uno cant be powered by VIN pin
Im trying to power an Arduino Uno from a pack of 8 AA batteries (so 12V) and it just doesn't turn on. When I connect the barrel jack, it works! Any idea why the VIN doesn't work? Thank you in advance.
2
votes
2answers
48 views
How can I increase the torque or speed of the stepper motor with Arduino
I run 28BYJ-48 12 Volt Motor with ULN 2003 Driver using Arduino UNO.
I am also using external 12 volt power outside.
I aim for the syringe pump to move back and forth with the rotation of the motor.
I'...
0
votes
2answers
37 views
TPIC6B595 Output Unable to Allow Supplied Power to 7-segment Display
We have an Arduino Nano connected to 4 small (0.5") common-anode 7-segment displays and 2 large (3") common-anode 7-segment displays. We are trying to multiplex the displays. The larger one ...
1
vote
0answers
35 views
Arduino IDE on Attiny45: What kind of power does a chip need?
I have this little AtTiny45 which I'm loading a program with Arduino as ISP.
My goal to use this chip along with a op amp, a piezo buzzer and a press button, and have it automatically sleep between ...
1
vote
1answer
32 views
How to fix HC05 burning even after while using voltage regulator?
I'm using two circuits for my wireless head mouse project, one of them is a transmitter circuit with Arduino Pro Micro, HC05 Bluetooth module, Elechouse Voice Recognition Module V3.1, GY-521 module ...
1
vote
0answers
28 views
Use Arduino Uno as 5V Power Source for Sensors Connected to ESP32 Microcontrollers
I am using an ESP32 WROVER B based microcontroller, which has 3.3V and 5V outputs. Due to poor soldering of the header and attempted removal of the solder (permanently damaged PCB etching electrical ...
1
vote
1answer
32 views
L293D motor shield
I have the L293D motor shield on top of my Arduino UNO.
The L293D has a servo attached of 5 volt and a motor of 12 volt there is an external power supply.
If I remove the jumper of the board and power ...
1
vote
0answers
37 views
Esp32 heating slowly
I made a small little IoT device to control my light chains from my phone, I'm using a MOSFET to turn the power on or off, using an esp32 connected to the MOSFET, both esp32 and light chain is ...
1
vote
0answers
20 views
GSM900A module is not connecting to the network
My GSM900A module is not connecting to the network. IT continuously blinks(1 sec). The power was given by the Arduino Uno board. Then I tried connecting an external battery(4.2V , 4200mAH). But it ...
0
votes
0answers
35 views
Arduino EMF doesn’t work!
https://youtu.be/y1Bke3750WE
I’ve been trying to make an Arduino emf because no brand makes a commercial one like a board/module. I’ve tried connecting ones that work (circuits from store bought ...
0
votes
1answer
39 views
How to calculating requirements of power supply for a project
I am starting with electronics and been working with Arduino for some time now. I did some basic LED and servo motor project and was hoping to jump into making an obstacle-avoidance car. I used 4 AA ...
1
vote
0answers
28 views
Powering up small motor board without motor [closed]
Looking to supply power to the middle rings of this board on the back. It takes 3v to power it up. I’ve tried soldering but it’s for a motor so I’m not sure if it can stay permanently. Is there any ...
1
vote
1answer
41 views
Grounding Arduino UNO with external voltage source
I was experimenting with external power supplies and noticed that the only way the Arduino can communicate with an externally powered sensor (through SPI) is when the GND pin under power AND the GND ...
1
vote
0answers
18 views
I have three load cells can I sum all the three into Arduino to be one output? If yes how?
I am doing stand thrust and I have three load cells to measure the force. I would like to know if I can sum them to gather into the Arduino or I should use a junction box.
1
vote
1answer
26 views
Can you power the ESP8266E-12 with any of the 3.3V pins?
If I want to operate the NodeMCU on the 3.3V input with 2.5V to 3.6V; can I use any of the 3.3V pins to do so?
1
vote
0answers
20 views
Issue with different ways of powering
I have a project to make where I have to read tags out of 5 RFID Readers and when every tag is in correct reader to open a relay. The schematic is the same with Annaane's with the difference I have 5 ...
0
votes
1answer
30 views
Arduino MKR GSM 1400: Can I tell from code if the power has tripped
Is there a way to tell if an Arduino MKR GSM 1400 has lost power and has to rely on the connected battery?
Ideally, I'd like to do this without adding additional circuitry. Alternatively, can I ...
3
votes
1answer
97 views
Arduino nano 33 ble vs ble sense. Power consumption, etc
After working with an Arduino Uno at work, I am looking to buy myself a board for some projects/experiments at home. The nano size seems like a great option, especially the one without soldered ...
0
votes
0answers
33 views
What component do I need (power)
I want to power my board using a 9v battery. I also want to power a component in my circuit from the same power source (9v battery) but ONLY when my board sends a signal (say from D1 pin).
What ...
0
votes
0answers
15 views
What's the pinout of the Gravity MOSFET power controller board?
I found https://wiki.dfrobot.com/Gravity__MOSFET_Power_Controller_SKU__DFR0457 this board for a non-Arduino project and it does not list the pinout of the JST-PH 2.0 header but it does show it ...
1
vote
1answer
71 views
How do powering arduino both barrel jack and lipo battery together?
I have arduino mega and Lipo batterry such this and Lipo battery charger 5V USB Boost. I am powering arduino normally from barrel Jack with an 9 Volt adaptor. But if there is power cut occur, I dont ...
0
votes
1answer
79 views
Can I use an internal clock on Wemos D1 Mini?
I have a working Wemos D1 Mini setup measuring temperature and sending it over wifi to my server. Now I'm using a battery powered unit, and playing around with power consumption optimization and how ...
1
vote
1answer
43 views
Extremely unstable analogRead() on Arduino Nano when powered from an external source
I'm doing a really simple project with an Arduino Nano and found a problem.
The circuit is a simple temperature sensor and a tension read from an analog pin everything showed on a Nokia 5110 LCD.
When ...
0
votes
1answer
44 views
Relay + Arduino uses too much power for battery to handle. Which solution is best?
You can see in my crumby schematic that I am using a Non-latching relay to turn on a 3A circuit (one of them arc lighters), which is powered by a 25C (supposedly) lipo battery. That same battery also ...
2
votes
3answers
74 views
Using Two Arduino to Lower Power Consumption
I am planning to build a water quality sensor with ph, temperature, and dissolved oxygen, conductivity. The power consumption looks like it will be very high especially due to the signal isolator, I'm ...
1
vote
1answer
67 views
Wemos D1 mini and JSN-SR04T-2.0: Type of power supply affects the sensor readings
Pretty similar to what is described here I have the strange problem that my sensor readings are affected by the type of power supply I use.
Whenever I connect my D1 mini through USB with laptop ...
0
votes
1answer
48 views
Powering Arduino and L293D with the same Power Supply
I am relatively new to Arduino and plan to power an Arduino and an L293D Motor Driver with the same 9V power supply as in the diagram below.
I tried to simulate this with Tinkercad, but it seems like ...
0
votes
0answers
36 views
Power up Arduino using AC/DC Adapter
Wanna get your advice regarding powering up Arduino Uno using AC/DC Adapter to the barrel jack.
The first adapter I use couldn't work and the shop which I bought it from said the adapter was short ...
0
votes
0answers
26 views
Arduino sleep mode problem while sending data with gsm module
i am trying to send gps data via sim800l gsm module. Working fine without the power down code but when i add the power down code it stops working (not sending the gps data. code execution stops in ...
0
votes
2answers
79 views
Power Arduino and LED strip
I saw this question about powering Arduino and LED strip. So, I searched for a 5v 4a power supply and foud this one.
How does that adapter provide power for both Arduino and LED strip? I thought I ...
0
votes
1answer
45 views
Arduino Uno with HC-SR04 Power saving
My Arduino Uno is powered by 9v battery to run 2 ultrasonic sensors (HC-SR04) and a buzzer.
I intend let the circuit run for at least a week.
Is there a solution to reduce power consumption / increase ...
0
votes
1answer
53 views
Circuit not working with 9 volt battery [duplicate]
I have made a simple circuit having an IR receiver and a Servo motor. Here is the diagram:
Red wire: power
Black wire: ground
Orange wire: digital signal
And here's the code:
#include <Servo.h>
...
0
votes
0answers
44 views
Warm Atmega328p and weird power behaviour
I recently built a circuit with an atmega328p (which I have never used before standalone) and attached all the neccessary components (crystal, capacitors etc). However, when I powered it up with a ...
0
votes
1answer
74 views
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 ...
0
votes
1answer
100 views
How to supply more than 500mA while powered by USB
I'm about to build myself a new BrewPi and I have some Arduino power/USB questions.
Something smiliar to a combination of these projects:
https://imgur.com/a/Nval6
https://www.homebrewtalk.com/...
0
votes
2answers
138 views
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 ...
0
votes
1answer
58 views
Powering a system using batteries
I made an arduino nano IR sensor based auto liquid dispenser. Currently it is being powered by a 12V 2 amps adapter. The 12v adapter is connected to a LM2596 DC to DC buck converter which converts the ...
0
votes
1answer
45 views
Motor cutting out when using HC-05 Bluetooth module
I'm using an L293D motor driver chip along with an HC-05 Bluetooth module. The two work as expected separately - I can send a string via a Bluetooth terminal app on my phone to the HC-05 and I see it ...
0
votes
1answer
43 views
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 ...
1
vote
1answer
58 views
NodeMCU Power supply
I got a question about externally powering my NodeMCU V3. It has an onboard voltage regulator (3v3) which breaks out to 3 header pins. Now I want to power 3v3 from an external board. Can I supply 3v3 ...
0
votes
0answers
35 views
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....
0
votes
0answers
24 views
Feather will not work if GPS is attached
I have a feather huzzah, and a feather GPS shield. The feather will not accept program code while the GPS is plugged in. I have determined this is some sort of power issue. I have a battery connected ...
