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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.

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70 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 ...
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1answer
30 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 ...
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2answers
73 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
373 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
43 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 ...
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2answers
83 views

How can I wire a separate battery pack and control it with the 40-pin GPIO?

I am building a high altitude balloon and I need another way of bringing it down besides the balloon popping. I would like to regulate a battery pack with the GPIO on the Pi in order to heat a ...
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1answer
85 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 ...
3
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5answers
7k views

Power Raspberry with LiPo battery

I have a LiPo batterery: EZ-power LiPo 4000mah - 2s 7.4 How could I power the Raspberry, I just know that Pi works at almost 5V.
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2answers
351 views

Battery Charging / Management Board Recommendations

I am trying to build a portable device using the Pi Zero W and some 5V sensors. For the power supply I thought about a power bank meant for charging phones. The problem is that to power the device off,...
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1answer
40 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
180 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 ...
14
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9answers
65k views

What can I use to power my Raspberry Pi Zero with rechargeable battery?

Is there a 5 V rechargeable battery and cables compatible and comparative in size with Raspberry Pi Zero? I don't want to have to plug my Raspberry Pi in every time and nonrechargables get ...
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6answers
78k views

Will any external battery power a Raspberry Pi?

I am working on a project that needs the Raspberry Pi to work without a mains connection. I have considered buying a 50000mAh USB power bank. Would this power a Raspberry Pi, and if so, would it ...
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2answers
168 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 ...
7
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1answer
688 views

Raspberry Pi battery state?

I use a power bank to power my Raspberry Pi, and I want to create script to turn off the Raspberry Pi when the battery level is low, but I cannot find any command to visualize the battery level. I ...
0
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1answer
281 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 ...
5
votes
1answer
11k views

DIY uninterruptable power supply (UPS) for Raspberry Pi Zero

I have several pi-zero boards and I utilize them to monitor environmental conditions (such as humidity, temperature and intrusion) of each room in home. For continuous operation, I want to eliminate ...
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2answers
232 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
47 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 ...
2
votes
2answers
833 views

How can I monitor power usage via the CLI?

On Ubuntu, there is a way to monitor power usage by a Linux device via the CLI and inside the task manager if it's a laptop. I am powering my Pi via a lead-acid battery, and I'd like to have a ...
0
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1answer
85 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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2answers
562 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 ...
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0answers
42 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 ...
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2answers
5k views

Portable power supply for RPI3 and official touchscreen requirements

I have recently bought and assembled a Raspberry PI 3, official touchscreen and case / enclosure. I want to be able to use it whilst out and about with a rechargeable battery and if possible allow ...
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2answers
229 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 ...
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1answer
753 views

Viewing battery status Archlinux arm

I have a portable USB charger/external battery pack. The exact model is this one. My raspberry pi is running ArchLinux Arm. I am trying to view the battery status and other relevant information. ...
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1answer
196 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 ...
3
votes
2answers
391 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 ...
4
votes
4answers
6k views

Battery pack for model B RPI, Thoughts?

Thinking of getting the battery pack linked to below for my model b Raspberry pi, i am wondering if anyone knows anything about it and how could it is because for first glance it looks amazing. Thanks ...
17
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3answers
20k views

Is it possible to detect input voltage using only software?

I'm a newbie to Raspberry Pi's, but one of the things I was thinking about doing is running it off batteries (I see many people do this) - that led me to concerns about shutting down gracefully. Is ...
3
votes
2answers
350 views

Battery Supply Question

This question may have been asked several times, regardless: It's been quite sometime since I took my electrical courses in tech school and had a question about battery powering my RPi. I currently ...
10
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6answers
38k views

How can I stress test my Raspberry Pi

I recently picked up a battery powered USB cell phone charger and I'm running some tests to see what kind of battery life I will get. Right now I'm just testing at Idle. I want to also run a test ...
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2answers
1k views

battery power for RPI and IR LED bank?

I built a simple night vision set up using a model A RPI, pi NOIR camera, and car backup camera monitor. I made a simple infrared light by wiring 4 sets of 6 LEDs in series, so 24 total, let's see if ...
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2answers
60 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
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1answer
55 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
vote
1answer
47 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 ...
7
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5answers
1k views

UPS for raspberry pi

I want to be able to power my pi like a smartphone (ie from battery or from mains (while charging the battery), hot swappable) I know there are boards like the MoPi that achieve this, but the ...
0
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1answer
333 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
228 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
956 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
votes
0answers
247 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
votes
1answer
82 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
142 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
votes
1answer
152 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
votes
0answers
199 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
52 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 ...
7
votes
2answers
2k views

Can I use a DC-DC step up module to power a Raspberry Pi from 2AA batteries?

I understand that I can use 4AA batteries and a step down module to get 5V and power the Pi, however briefly. However, now I'm getting real outrageous and want to trying powering the Pi from just 2AA, ...
1
vote
2answers
289 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
votes
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 ...