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.
192
questions
1
vote
0
answers
29
views
Battery Information on Raspberry Pi
I am currently using PiSugar 2 Pro for my Raspberry Pi 3B+. While I know that PiSugar has its own server where you can check on battery level, I was looking for a more direct integration with the OS, ...
- 111
-1
votes
1
answer
16
views
Raspberry Pi 4 wifi intermittent latency drop
I'm running Ubuntu Server 20.04 headless on a Raspberry Pi 3 and 4. SSH connection is through a wireless router with only my laptop and the Pi connected. Pinging the Pi (192.168.0.215) shows the ...
- 1
0
votes
1
answer
30
views
can I use a 12v car battery to connect to a L298N h-bridge to control two 12v dc motor [closed]
I am new to the raspberry pi world and electronic in general. so I am wondering if it is safe to hook up 20 AWG wires to a car battery and have those wires going into a L298N h-bridge to power 2 ...
- 1
0
votes
2
answers
65
views
Get Measurements from Battery/Solar Setup
I'm planning a setup with an rpi3b+ and the pijuice hat (battery) and pijuice solar module. It is key to my project that I can access the following data digitally i.e. in the pi:
current power ...
- 1
0
votes
1
answer
37
views
How to change the color of the desktop background programmatically?
A similar question, (How do I change the Desktop wallpaper from the cli), was asked previously where the person wanted to know how to change the wallpaper.
Going through the answers, I discovered that ...
0
votes
0
answers
34
views
Problems powering a 3B+ with 7” touchscreen
I’m trying to create a battery-powered RPi 3B+ system and am running into issues almost immediately due to the Pi’s power requirements. I’m testing using a 5V 3A wall power supply which is running ...
0
votes
0
answers
42
views
RPi Zero LiPo Questions
I have plans to make a fpv camera with the RPi Zero W and have it live stream the video to my computer as well as record. I will power it using LiPo batteries but I don’t know which parts I should use....
- 1
-1
votes
1
answer
59
views
How to turn on a remote battery-operated Raspberry Pi (accessible by Wifi or SSH)?
I am running a cluster of Pi3 and Pi4. Each node runs on a battery and is powered by a solar panel, in a remote area like a farm with no grid. Pis are connected to each other by WiFi in a local ...
0
votes
0
answers
152
views
How to measure voltage and current of a battery with Raspberry Pi? [duplicate]
Im creating a battery,and I want to measure the current and voltage?Which possible circuits could help me?
To clarify my question,I doing a DIY battery and afer that I want to measure the results.So I ...
- 25
0
votes
0
answers
15
views
Powering a Pi 4 with a small power bank [duplicate]
For my project SamplerBox, I had done many extensive tests in the past and it was possible to successfully power a RPi 2 for multiple hours with such a small 2600mAh power bank (18650-battery inside), ...
- 644
0
votes
0
answers
55
views
Retropie Battery Powered Handheld
I am planning to build a Retropie Handheld and want to use:
2 of these in series: https://www.jaycar.com.au/14500-rechargeable-li-ion-battery-800mah-3-7v-nipple/p/SB2300
paired with one of these: ...
1
vote
0
answers
84
views
cheapest UPS for pi4 [closed]
I am looking for a better/cheaper way to do power-backup in case of blackouts.
Right now it is a PI4 I need to power, and it is powered by a 12V AGM battery (12Ah)
PI4 <-> USB-C cable <-> ...
- 111
-1
votes
1
answer
157
views
Why DHCP logs are missing in dnsmasq-Raspberry Pi-Unifi-esp8266?
I have a network made of Rpi, ubiquities, and esp8266. Raspberry pi is configured as the eth0 to eth1 router. Eth1 is made using a USB to ethernet converter. The Main ubiquiti is connected to the eth1 ...
- 181
0
votes
2
answers
103
views
Raspberry Pi 4b- powerbank measure
I want to power my Raspberry Pi 4b with a powerbank. I know that I need a 3A powerbank.
The question is: How can I measure it? I want to get a percentage of it (which will be displayed over a website)....
0
votes
1
answer
48
views
Powering aAdafruit PiTFT 2.4" HAT Mini Kit - 320x240 TFT Touchscreen. via a power bank. (Needs a bit more power)
I've been having problems getting this set up and now I do believe I know why.
I got an Anker Power Bank (26,800mah) Not the Power Core +
Input: 5V ⎓ 4A (5V ⎓ 2A Max Per Port)
Output: 5V ⎓ 6A (5V ⎓ 3A ...
- 1
0
votes
1
answer
69
views
Battery supplied e-ink photo frame with scheduled wakeup time
I am building a raspberrypi zero eink photoframe. My aim is to create a photo frame that I would be able to put on the wall without cables hanging around, battery powered. In order to achieve this I ...
0
votes
0
answers
32
views
Turning switch on lowers voltage from 5.2v to 3.0v
This is probably a simple question, but I’ve researched a lot and haven’t been able to figure out how to fix the problem.
Basically, I have a Raspberry Pi and a 5-inch LCD screen wired to a toggle ...
0
votes
1
answer
54
views
RaspberryPi Zero W with battery life for 7 days [closed]
I know of different projects that are using micro processors - dont know if they are Raspberry models however - but they have bluetooth connection, wifi module and a camera attached. And they are re-...
- 103
2
votes
2
answers
2k
views
Reduce power consumption Raspberry PI 4
I plan to use a Raspberry PI 4b powered by battery and hopefully to monitor a remote chicken farm and need it to last a week or two on a car battery.
If powerconsumption is 1A then with a 60 AH ...
0
votes
1
answer
811
views
Battery Management System (BMS) [closed]
I'm making a UAV using raspberry pi and I understand that it does not require a complicated BMS since it won't have complicated circuitry. The only problem I'm facing right now is that of the BMS. I ...
- 1
0
votes
1
answer
96
views
Running a Raspberry Pi from a car battery using a Witty Pi 3 (sanity check)
I'm not totally certain that I understand what a Witty Pi 3 Rev2 does so this is by way of a sanity check that I have got it right.
The documentation says "Thanks to the on-board DC/DC converter (...
- 131
0
votes
1
answer
155
views
how to properly make a charging circuit -- 2s 7.4V to 5V 2A
I have 2 18650 li-ion cells, each at 3.7v
and this bay with this white connector
I saw on youtube that depending on the length of the cell, we can know whether they have integrated "invisible&...
0
votes
0
answers
196
views
how to power a raspberry pi zero w, with a 2x18650 bay, through GPIO
I'd like to wire this bay to the GPIOs of a rpi zero w.
The bay welcomes 2S 2x18,650.
On each cell is written "9800mAh TR 18650 3.7v Li-ion".
My requirements are :
One micro-USB port must ...
1
vote
2
answers
498
views
Using Relays to Power off then Cut power to Pi Zero
I have a raspberry pi zero that I am running off a battery for remote logging reasons.
There is a low battery shut off module I have connected to the battery in case the battery gets below a certain ...
- 11
1
vote
1
answer
186
views
24/7 Solar panel + battery to power a Raspberry Pi Zero W [closed]
I need to create a system to have a remote bees monitoring.
In this place I haven't the electrical energy. Basically I need to monitor some sensors (5 temperature and humidity sensors).
I'm not expert ...
- 121
0
votes
1
answer
27
views
battery for B+ model?
Could one of these rechargeable battery packs work for a rasp pi B+? Klientool and BestBuy are some options I can packup locally, plus I like Klientools. Any tips greatly appreciated...
Klientools
...
- 205
0
votes
1
answer
48
views
Can AA batteries have voltage or current spikes?
I'm a noob in raspberry pi and in engineering in general. I had an idea for a project but it requires it to be somewhat portable so I need to power the raspberry somehow. I read this article Where it ...
0
votes
0
answers
93
views
Is there a reason my GPIO pins have a low voltage?
I'm currently using a Raspberry Pi Zero W running Pi OS Lite. I'm using the following external hats with it:
PiSugar 2 Battery 1000mAh link
Serial PiZero addon link
PiOLED link
Here's my situation: ...
0
votes
2
answers
91
views
Is there any battery for Rpi that can be charged and used at the same time? [closed]
I'm making a security camera using Raspberry Pi 3B+ . I want suitable battery to power my rpi. Is there any suitable battery pack that can power Rpi at the same time recharge the battery? I also found ...
0
votes
1
answer
322
views
Shutdown on low power with INA219 UPS HAT
I have a Uninterruptible Power Supply HAT For Raspberry Pi (bought here https://www.cytron.io/p-uninterruptible-power-supply-hat-for-raspberry-pi) and there is an INA219 chip on it.
I'm using a python ...
- 101
0
votes
0
answers
46
views
Audio Amp + battery = shutdown on high volume
I'm using the Raspberry Pi Zero W with a DAC, the MiniAmp from HifiBerry (2x3W) , and a pair of speaker 4Ohms 3W for making a connected speaker device.
Everything is working great until, in order to ...
- 1
0
votes
1
answer
224
views
Raspberry pi 0w is making a humming/buzzing sound?
I have a problem with my raspberry pi 0w. The SOC is making a buzzing sound when connected to a li-po.
The li-po is 3.7 volts and 1200mah and it is connected to an Adafruit 500c (https://www.adafruit....
0
votes
1
answer
70
views
Keep running Pi while charging batteries [closed]
I would like to build a simple automatic irrigation system with Pi zero, the thing is that I don't have access to electricity outside.
I thought to connect 5v solar panel + 3\4 chargeable batteries.
...
- 101
-1
votes
4
answers
149
views
Battery Solution for Raspberry Pi 3b
I am working on a project for which I need to attach the four raspberry pi boards on the ceiling of the room (one at each corner).
The script that will run constantly scans the BD Address and the RSSI ...
4
votes
4
answers
2k
views
Voltage monitoring of battery pack (i.e. before voltage regulation)
I am looking to use four 18650 batteries and a step-down DC-DC converter to power my Raspberry Pi 4. The negative terminal of the DC-DC converter is common for the input and the output.
I would like a ...
- 141
0
votes
2
answers
202
views
powering a pi 3B using two 18650 batteries in series. what circuits do I need? [closed]
I have an raspberry pi 3B I want to use as the brains for a robot car. In my initial setup I used a power bank for the Pi and a powered the motors using a seperate pack of two 18650 batteries in ...
- 155
2
votes
1
answer
212
views
RPi3 power consumption based on CLI or Desktop GUI. Which consumes more power? CLI vs Desktop GUI
I am planning to do a project where RPi3 will b run by a powerbank. But I am bit confused with power consumption and in my project I am not running any heavy load expect camera interface. In my case ...
1
vote
0
answers
101
views
Isolate Raspberry pi from power supply on shut down
Ok Team I need to know if this circuit will work or if there is a better way.
Use Case:
I have a piece of machinery that is controlled via a Raspberry pi zero W. It just controls a relay board to ...
2
votes
1
answer
602
views
How can Rpi I2C read a Coulomb Counter, up to 18V, 10A?
I"m building an autonomous boat with a solar panel. The heart of the boat is a Raspi zero which contains a small program doing the navigation. I've got a 3S li-ion battery of which I'm already ...
- 259
0
votes
2
answers
2k
views
How to add Capacitors to Raspberry Pi
My goal is to add capacitors to the Raspberry Pi power-supply.
Currently I have my raspberry Pi plugged straight into a portable 5v battery, this works fine.
However, I want to be able to swap from ...
- 1
1
vote
1
answer
304
views
Running Pi4 and touchscreen off battery
I am building a portable RPI 4 and touchscreen and am hoping to be able to run it off a battery or external power, through one external port (ie, on outside of enclosure, one microusb port shows) ...
- 11
4
votes
2
answers
3k
views
Power Pi4 with USB-C Power Bank
Can a USB-C Power Bank be used to power a Pi 4 for off-grid or mobile uses where the Pi cannot be tethered to either a mains electric socket or a POE switch?
- 1,529
1
vote
1
answer
2k
views
I would like to add a battery to my Raspberry Pi 4. Can i do this by soldering to tp7, tp12, or tp1 on the underside of the board?
I would like to add a battery to my Raspberry Pi 4. I am building a tablet that can be turned on and off by a switch that brings power from the usb port from a power bank to power the pi, can i tie ...
- 119
4
votes
1
answer
342
views
Power off Raspberry Pi if charger of powerbank is connected and turn back on if disconnected
I have a (maybe trivial) problem.
I want to power a Raspberry Pi (more specific a SteroPi) with a power bank. The power bank has the feature, that its output is always on. So even if I plug in a ...
- 66
1
vote
1
answer
158
views
Raspberry pi 3 keeps rebooting
I am trying to make a simple robotic car with my raspberry pi. The problem is that when it reaches the white load up screen it immediately reboots itself over and over again.
My raspberry pi is ...
- 11
1
vote
1
answer
84
views
Small, Rechargeable LiPo and RPi 4B
I've started a new, more specific thread, here.
I'm looking for a way to power my Pi 4B inside a 3d-printed laptop project (nothing has actually been started yet), and it would be great to hear what ...
- 65
0
votes
1
answer
109
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-...
- 119
0
votes
1
answer
76
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
vote
1
answer
50
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 ...
- 15
1
vote
2
answers
657
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 ...