Questions tagged [battery]
In electricity, a battery is a device consisting of one or more electrochemical cells that convert stored chemical energy into electrical energy.
146
questions
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51 views
AlphaBot, which type of 18650
The AlphaBot uses batteries 18650.
But does anyone know if it should be the ones with the button top or the flat top?
Heres a button top:
https://www.amazon.com/AllForBest-Protected-Panasonic-18650-...
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0answers
22 views
How to make more efficient reading of GPIO
My (python) program (on Raspberry Pi zero W) turns on/off a GPIO pin (connected to a relay module) depending on the RSSI signal of my phone (connected via bluetooth) and the status of one more GPIO ...
1
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1answer
32 views
How to correctly implement voltage and current monitoring from a solar panel?
Good day
Given:
Solar panel (with a maximum output current of 2100 mA and an output power of 25 W; Output voltage - 5 V). These parameters are stated on the seller’s website and may differ from ...
1
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2answers
65 views
Rpi GPIO Push Button Circuit Grounding Problem
I have a little project where I power my Raspberry Pi Zero using a 12v Battery, via a small 12v to 5v regulator I bought from eBay.
I am going to connect a push button to the Pi as in the following ...
2
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2answers
107 views
how do I automatically power off the raspberry pi and cut power every night and then power it back on each day?
Background
I'm a student working on research project to develop a remote wireless sensor network of data loggers. Each data logger (aka node) is going to be retrofitted to a bird feeder that reads ...
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2answers
70 views
Can I use Rpi 3.3V power pin (pin number 1, not GPIO signal pin) to power a 5mW green laser pointer originally powered by AAA x 2 = 3V bateries?
Let's say I have a device powered by 2 AAA batteries in series (1,5v x 2 = 3v and 625 mAh).
Is it possible to replace the 2xAAA battery with the 3,3v Raspberry PI GPIO output?
Or the 0,3v may be an ...
1
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1answer
49 views
Does a battery pack exists which does not need the microUsb power connection? [closed]
I'm building a small robotic car, which obviously needs battery power for it and the RPi. I've no problem with the battery pack for the car since it fits neatly into the chassis, but the RPi microUsb ...
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47 views
RaspberryPi is not provided with enough power
Im trying to learn robotics with raspberrypi but im having a problem.
I have 6 AA batteries that are connected to a LM2596S adjustable voltage regulator module, Which then is connected to the ...
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0answers
37 views
Are there any battery backup options that work with a PoE powered Pi?
Looking to have a Pi (4) that is powered over PoE - are there any battery backup options (i.e. hats) that can be stacked with the PoE hat & supply power if/when the PoE fails (and then re-charge ...
2
votes
1answer
85 views
Battery Usage Pi Zero W for video stream
I am trying to do live video streaming from the rasberry pi, meaning the camera is recording a video and then transmitting the live video over wifi.
What is the smallest battery I can use to power ...
1
vote
1answer
34 views
Most recommended power-supply option from dual-port Powerbank
I have a Raspberry Pi 3 model B [1]. It's powered by a DC adapter that outputs 5.1V and 2.5A. Although I consider ocassional manual reboots, I'm planning to use a Powerbank as some kind of UPS, after ...
0
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1answer
39 views
How to connect components of an RC (and rPi) car to the battery safely?
I am building an RC car from scratch. I have a 6v motor with an appropriate mdb, a 5v hobby servo, a raspberry pi zero w, and an 2200mAh 11.1v 50 C battery. I will upgrade the motor to a higher ...
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0answers
134 views
Raspberry Pi UPS with LiPo Battery
I have been working on a battery back up for my raspberry. The idea is classic: connect power bank to wall outlet and raspberry to power bank output. It works well with only battery power.
But when ...
1
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1answer
47 views
LiPo Voltage Drops
I am experiencing voltage drops with the following setup and I hope someone with mad electronics skills can explain my mistake to me:
Raspberry Pi 3 Model B
TFP401 Display Driver
7.0 Inch TFT Display
...
2
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2answers
2k views
Car Powered Raspberry Pi: Safe Shutdown and Power On
Apologies if this is a duplicate, but I can't seem to find a suitable solution.
I need to power a Raspberry Pi in a car, and for obvious reasons need to shutdown gracefully, however, I need it to ...
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1answer
56 views
Raspberry PI Portable USB Charger [duplicate]
I bought a $5 usb charger that I am using to power my Raspberry Pi. The charger works decently but I am noticing that every once in while the raspberry pi will reboot. I have read that some chargers ...
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2answers
154 views
How best to power a motor hat asking for 6-12V for just two DC motors
I purchased a Waveshare Motor Hat because it has the nice Pi Zero size, extra long headers, and already has headers and blocks soldered, all for less than $13.
https://www.waveshare.com/motor-driver-...
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2answers
85 views
Power Raspberry Pi using GPIO Pins and a 10A supply with 7805
I am currently working on a project where i have micro-controller,stepper drivers etc all powered through a single 12v 10a power supply. I was planning to use the same supply to power the raspberry pi ...
0
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2answers
380 views
Powering Raspberry Pi and Arduino
I'm curious about powering Arduino Uno, Raspberry pi 3 b+ and motor driver L298n. I've got 11.1V / 2200 maH li-po battery. Firstly connected battery to motor driver, then feeded arduino from 5V out ...
0
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1answer
459 views
Car battery life with raspberry pi 3 model B
=> Raspberry pi 3 model B powered with car battery
I have two questions :
1- How can I calculate car battery life ?
2- Is their negative impact for the start-up of the vehicle when I use his ...
0
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1answer
70 views
Running Raspberry pi 3b+ on lithium ion 36wh/7.4v question
I have built a little medical assistive device using the raspberry pi 3, I wanted to attach it to a backpack and test it in real life situations.
I don't have much money to purchase much things but I ...
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2answers
336 views
Is it safe to use this battery with the Raspberry Pi Zero?
I have two questions actually:
1) is it safe to use this battery and these wires with the raspberry pi zero?
2) if yes, where do i solder the highlighted (red square) ends to the zero board?
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1answer
100 views
How to implement properly the iot garbage management using sensors and esp8266 to mobile application
My question: I don't know how to connect ULTRASONIC SENSOR(hc-sr04) which is for getting the fill level of garbage and DHT11 for temperature and humidity to connect both in a ESP8266 to mobile ...
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0answers
62 views
How to extend battery life on custom pi laptop
So I'm trying to make a pi laptop based on this project with a few differences:
I use this display instead of this
Technically, I'm using 18650 cells, but at a slightly reduced
capacity
No Arduinos ...
1
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2answers
366 views
Raspberry Pi DC Motor Not Working
So, I am attempting to control a DC motor using a RPi Model 2B. I am using a l293d motor driver to try to control the motor and a 4 AA battery holder. The diagram is supposed to look like this ...
3
votes
2answers
618 views
L298N Not working with 4 x AA Batteries
I have a 6V motor attached to a HiLetgo Module L298N Dual H Bridge and controlled via two Raspberry Pi 3B GPIO pins (current just using HIGH & LOW).
If I use a 5V power supply from my Raspberry ...
0
votes
1answer
245 views
Slim distro for media server with least battery consumption [closed]
I want to create a portable media server using Raspberry Pi Zero W running on LiPo battery.
Steps will include installing minidlna, dhcp server, hostapd.
I have fair knowledge of these things and can ...
1
vote
2answers
65 views
Determine with a circuit whether the Raspberry is off
I am building a RC car with a Raspberry Pi 3, and I would like to power the Raspberry with a battery. However, when the Raspberry is off, I would like to switch from the battery powering the Raspberry,...
0
votes
1answer
62 views
Is it safe to wear a Raspberry Pi with a battery module？ [closed]
I want to take a Raspberry Pi with me as wearable device so I have to attach a battery on it. The problem is that I fear the battery would explode some day thus destroy my body , just like Galaxy ...
1
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1answer
64 views
Which is the most energy efficient language to develop an apllication for Raspberry Pi?
I have a Raspberry Pi that runs under a power bank (battery) of 10.000 mAh.
I want to develop and application which does non-blocking IO from the USB port and sends data over network to accumulation ...
0
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1answer
472 views
Sense HAT - Power Consumption
What is the average power consumption of the official Sense HAT (w/o LEDs)?
More specifically:
I'm interested in the power consumption when logging the data from the gyroscope, accelerometer and ...
1
vote
1answer
403 views
Battery level monitoring circuits [duplicate]
I want to use a USB power bank for powering my RPi3B but I need to display how much charge is left. What is a good set up of measuring the battery level of the power bank?
2
votes
1answer
1k views
Battery level of USB power bank [duplicate]
I plan to use a USB power bank to power my Raspberry Pi 3 Model B, but I need to know the battery level/percentage. There is the battery icon and percentage in the top right corner. Does this ...
0
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0answers
287 views
Using Raspberry Pi Zero W connected to LM7805 or dc buck converter from UPS LEAD acid battery
Planning to build battery backup for raspberry pi zero w that last for days from 12v lead acid PC ups battery.
Parts
PC UPS, https://www.youtube.com/watch?v=-Ur-D37-juo
LM7805, https://www.ebay.in/...
0
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1answer
97 views
Powering Motor Driver from the Pi?
Im looking into getting the L9110S Motor Driver. I need to control 4 motors between 4.5v and 6v. The issue I am running into is how the motor driver is powered. It looks like most people power it ...
3
votes
1answer
194 views
Am I Correctly Calculating mAh for the Pi?
I am trying to figure out what size battery I will need to power my RPi and 2 components with it. I want to build a "tablet" of sorts, mainly because I don't want to spend $800 on a Wacom tablet when ...
0
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0answers
224 views
Using Raspberry Pi with Powerbank Accumulator
I wanted to power my Raspberry Pi 3B plus some sensors and an additional Huawei modem with a Powerbank. When turned on that's no problem, everything works fine. But I want to measure some enviromental ...
0
votes
1answer
35 views
Is it correct to say that we have few cm computers but we still need a bulky transformer? [closed]
In a past I planned an arduino project, on the microcontroller side.
With the possibility to go idle and save batteries. But arduino is not a computer.
The reduced size of things like raspberry pi ...
0
votes
1answer
63 views
Looking to piggyback a pi on top of an arduino robot. How to power it?
I recently bought and assembled this Arduino-based robot turtle kit, and it's fun but I find microcontroller code a bit limiting, and I'd like to stick a raspberry pi on top of it to provide some ...
1
vote
2answers
430 views
battery management
I designed a food dispenser using a rPi+touchscreen, a h-bridge L293DN and a Mercury stepper motor SM-42BYGO11 (from Sparkfun). The system works great except that I need to have it powered by a ...
0
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1answer
178 views
Trouble using Pi's GPIO pin PWM to control ESC powered by separate battery
Can I use my Raspberry Pi to provide the PWM controlling my ESC, but have the ESC powered by a separate battery?
The ESC I'm using is "A1S 3A Blheli 1S Super Mini Brushless ESC". It's awesome. And it ...
0
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0answers
37 views
2 Raspberry Pis 1 Battery
I'm working on a project, here's the deal...
I have 2 raspberry pis (3B, and a zero w) and 1 battery (3.7V LiIon 1200mAh).
I bought a PowerBoost 1000 (A "DC/DC boost converter module can be powered by ...
1
vote
2answers
643 views
Running/charging batteries on the RPi3
I have a standalone RPi3 inside a case where I've designed room for a couple servos and a battery pack of some kind. The mini USB port is accessible thru the case wall, and I could also make the 4 ...
1
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2answers
968 views
Power Raspberry Pi using two 3.7v Lipo batteries
I was having trouble while booting up my Raspberry Pi powered by LiPo batteries.
Ignore the components inside the blue circle
I am just connecting the batteries, the darlington transistor and the ...
1
vote
1answer
124 views
Why does my Pi 3 Model B with HAT DAC run fine on a 4V Lithium battery?
Everything I have read about the Raspberry Pi 3, model B says that it will not run reliably on anything below 4.6vdc. I have a Pi 3 and I am running it at around 4V DC with a single 18650 lithium ...
0
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0answers
45 views
Choose a boot partition based on rtc contents
We ship units which have an expected life in the field of ten to twenty years. They include an RTC with a replaceable coin cell. Most of the time the machines will be powered on, so the RTC battery is ...
0
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0answers
178 views
Raspberry Pi Backup Battery Hat V1.2 battery level
My question is about Raspberry Pi Backup Battery Hat V1.2 specification.
Is it possible to see somehow level of battery discharging (% of battery charge) by using the operation linux system like ...
0
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3answers
119 views
Will my Pi running on a battery be damaged as the battery dies?
So I know that providing a Pi with too little power can potentially cause physical damage to the circuitry (brownout). I don't 100% understand how or why this happens.
I know that it seems a lot of ...
1
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4answers
3k views
Smallest battery that can run the raspberry pi zero w for a short amount of time
I have a raspberry pi zero w. What is the smallest (in terms of weight) that can run the pi? I am not concerned about how long it runs for; 5 mins would be adequate. What about with a camera attached? ...
0
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2answers
220 views
Lipo battery hat or attachment which supports seamless USB recharging
I just want to add UPS functionality to some of my flock of raspberry pis, and with an emphasis on portability.
One of the ways to get this is with certain USB battery banks. I have one here that is ...
