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Newest 'battery' Questions - Arduino Stack Exchange
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Learn more about TeamsQuestions tagged [battery]
A battery is an electrical power source which is often portable.
277 questions
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-1
votes
1
answer
157
views
How Do I Power An Arduino Nano Every?
I am pretty new to Arduino and I am making a project with my Uno R4 Wifi, it uses a servo and a motor to push a door closed, and when I power it with a 9v battery it barely moves the door, but when I ...
2
votes
1
answer
104
views
Code for a load cycler seems to be stuck
I am trying to make a battery load cycler to charge and discharge a battery repeatedly for a certain amount of cycles and here is my code:
bool in_charge_mode;
int cycles = 0;
float cutoffvoltage = 2....
1
vote
1
answer
285
views
Re-using built-in USB port to charge battery
I'm dipping my toes into using LiPo batteries for supplying power to small devboard projects, currently with an LOLIN S2 mini.
So I got hold of a MH-CD42 module, which seemed like a safe way to start ...
0
votes
1
answer
154
views
ESP-WROOM-02 with on-board 18650 battery. How to charge it?
I have a ESP-WROOM-02 module with on-board 18650 battery. V+ and GND are exposed on the board.
Can I directly charge the battery using an USB-C connector with the two cables (red and black) directly ...
0
votes
1
answer
329
views
I want the Arduino to be in sleep mode by default and have a button wake it up
I saw a library called LowPower_LowPowerLab that can set the Arduino in sleep mode. In their example they put the Arduino to sleep using an external button, is there anyway to invert this behavior? I ...
2
votes
3
answers
1k
views
Run Arduino Uno with battery AND use 5V output
Newbie here: I built a working binary clock with my Arduino UNO R3, see Picture 1. From my understanding the power supply for the Arduino itself is via USB, and I use the 5V output to supply power to ...
1
vote
1
answer
1k
views
Determine if a XIAO ESP32C3 is charging
When the XIAO ESP32C3 is charging a LiPo battery, there is a small LED on the board that lights up. Is there any way to access this information in an Arduino program?
1
vote
3
answers
337
views
are 4AA batteries (6V) power my arduino
I'm actually new to using arduino , and trying to make a simple car, using two dc motors, a l298n and an arduino, the problem is that a 9v battery doesn't seem enough to just power the l298n and one ...
1
vote
0
answers
2k
views
Powering up a 16x2 LCD display with only a 9V battery
I'm using an Arduino (Nano 33 IoT) board for a project and apparently this board can only supply with 3.3 volts when a 9V battery is connected to it through Vin and GND pins. In other words, I'm ...
1
vote
0
answers
420
views
How to use LiPo powered Arduino Nano BLE when it's charging (with a charging circuit and a boost converter)?
I have a project where Arduino Nano 33 BLE (3.3V operating voltage) is powered by a LiPo battery. The battery is charged using Adafruit's MicroLipo Charger it is then connected to Adafruit's MiniBoost ...
1
vote
1
answer
464
views
AA alkaline batteries on firebeetle?
I would like to power a dfrobot firebeetle 2 using 3 alkaline batteries. I tried connecting the battery pack to the GND and VCC, but the board does not seem to react. What pins should i connect the ...
-1
votes
1
answer
252
views
Arduino 3.3v pro mini, most efficient use of AA batteries for power
I want to use a 3.3V pro mini that uses a BME 280 to take temp/pressure/humidity, and nRF24L01 module to transmit the data, at ?10 minute intervals. I want to use 1, 2,3 or 4 AA batteries to power it....
2
votes
1
answer
255
views
ESP8266 Wemos D1 Mini Pro v2.0 - Load sharing and battery
I have a simple question regarding the new version of Wemos D1 Mini Pro v2.0 and specifically about its load sharing circuitry. Schematic is here :
https://www.wemos.cc/en/latest/_static/files/...
1
vote
0
answers
205
views
How to lower the power consumption of this ESP32 during delay(500)?
The following code works. It does the following:
wake up when pin GPIO0 is connected to GND (the pulse duration is 400 milliseconds)
once every 10 wakings, I send the current index to a server with ...
1
vote
1
answer
2k
views
Slow WiFi reconnection after deep sleep (6 to 10 seconds)
With my ESP8266, I need to make a simple GET request to a server, and then go to deep sleep (the goal is 1 year battery powered)... until a signal comes on RST and then it starts again.
The following ...
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power × 95
arduino-uno × 57
motor × 31
arduino-nano × 25
esp8266 × 22
voltage-level × 21
servo × 16
esp32 × 15
arduino-pro-mini × 14
solar × 14
arduino-mega × 13
voltage × 12
sensors × 10
nodemcu × 9
lipo × 9
current × 8
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attiny × 7
wifi × 7
electronics × 7
charging × 7
shields × 6
sleep × 6
analogread × 5
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