In electricity, a battery is a device consisting of one or more electrochemical cells that convert stored chemical energy into electrical energy.
0
votes
1answer
67 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 ...
1
vote
0answers
29 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
vote
2answers
57 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
87 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
71 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
56 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
49 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
35 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
votes
1answer
100 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
54 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
234 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
190 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
0answers
567 views
How do you check the battery level of an external battery and display it through software? [duplicate]
I'm building a mobile device via a raspberry pi 3, and I need it to be able to display the battery life on the screen and shut down safely when the battery is below 5%. I believe this may require an ...
0
votes
1answer
40 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
97 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
0answers
118 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
34 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
34 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
183 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
1answer
106 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
212 views
Solar + PoE powered system: Splitter/Injector issue?
I am currently attempting to set up a Raspberry Pi which is powered at a distance of ~100ft by a solar power system. The current spec is as follows: 100w solar panel charging a 100Ah 12v battery. This ...
0
votes
0answers
35 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 ...
0
votes
2answers
298 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
vote
2answers
486 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
88 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
votes
0answers
39 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
votes
0answers
134 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
votes
1answer
64 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
vote
4answers
1k 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
votes
2answers
118 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 ...
0
votes
1answer
72 views
How to feed GPIO readings into indicator-power?
Debian has a package called indicator-power which notebooks use to show the current power.
I have a working voltage divider and ADC wired up to my external power source, and I have correct reading ...
4
votes
0answers
82 views
Raspberry Pi wild boar reppelent [closed]
In my father's farm, he may face a problem with wild boars. There are currently too many of them around. They already came to my father's farm but they did not destroy anything (there's not much to ...
0
votes
2answers
312 views
Battery to power Raspberry Pi Zero and two generic motors?
I plan to build simple RC car/robot with "2WD Two Wheel Drive Round Double Deck Smart Robot Car Chassis Kit For Arduino". I couldnt find the exact one I have, but I assume they are all pretty much ...
0
votes
0answers
62 views
RAVPower USB Battery Pack as Power Source [duplicate]
I know there have been several questions about USB battery packs posted throughout Raspberry Pi forums across the internet and I have read as many as I could find but I still feel like I don't have a ...
3
votes
1answer
8k 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 ...
0
votes
0answers
25 views
How does a Raspberry Pi 3 react with low voltage as batteries die? [duplicate]
How does the Raspberry pi react as voltage drops from batteries die? Does it eventually automatically halt or do I need to worry about unpredictable side effects from running the batteries dead?
0
votes
2answers
147 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,...
0
votes
0answers
679 views
Running my pi and 7" screen off a battery
What I have:
Raspberry Pi 3
Raspberry Pi 7” Touchscreen Display
Raspberry Pi 7" Touchscreen Display Case
I would like to make this thing portable and would like to add a rechargeable battery.
In ...
0
votes
1answer
2k views
Mobile Raspberry Pi Zero Camera
I'm creating a project using the Raspberry Pi Zero W and a Pi Cam to take pictures remotely.
Think deer camera in the woods. I need this to be battery powered and last at least a week.
Is this ...
0
votes
1answer
362 views
Battery Power supply for Pi-3, LCD and transceiver
I am using a raspberry pi 3 model B (5V/2A), a sainsmart 7" lcd display (12V/2.5A), and a ESP8266 2.4Ghz transceiver (3.3V) for a project. It needs to be mobile, so what kind of power supply ...
0
votes
0answers
290 views
Rechargeable battery for PI 3 and LCD
Currently working with a PI 3 and a 10 inch LCD, but as of right now I have 2 power cable, one for the PI and one for the LCD.
I'm looking for a way to power the PI and the LCD with a rechargeable ...
3
votes
2answers
2k views
Powering 2 servos with 5v output of L298N dual motor driver
I am using L298n Dual Motor Controller to control two dc motors for my robot. But I want it to power the servos too. I have created this circuit design.
can I power the SG90 Servo with L298n? Is ...
0
votes
1answer
519 views
Battery monitor
I would like to build up a 'smart' battery for my RaspberryPi 3 and integrate it trough the OS.
The electronics part is the easy task in this game. The complicate task (for me) is to find out how to ...
0
votes
1answer
553 views
How can I display the charge from a battery on my Pi? [closed]
I have a robot that uses a Raspberry Pi 3 Model B and a 12 volt sealed lead acid battery. The battery powers other things (motors, etc), and the Pi receives a regulated current.
How can I display the ...
-3
votes
1answer
131 views
How can I connect this circuit (pictured below) to my raspberry pi without using the gpio headers? [closed]
I was wondering if anyone could tell me how to connect this circuit to my raspberry pi without using the gpio headers because I am trying to make a portable tablet with the raspberry pi 2 and the ...
1
vote
1answer
617 views
Battery power supply and safe shutdown on power outage
I'm completely new with Raspberry Pi. In fact I'm just planning to buy a Raspberry Pi 3 Model B, but I don't have anyone yet. I want it to be running 24/7 so I'm worried about power outages. I've been ...
-1
votes
1answer
343 views
Battery For Raspberry Pi 3
Does anyone know of a recommended battery or power bank for the Raspberry Pi 3? I would like to be able to bring my Pi 3 along with me. I know that the Pi 3 gobbles power very fast but I want ...
3
votes
3answers
15k views
Raspberry Pi Zero Battery Life With 4400mAh battery
Like many other Raspberry Pi Zero users out there, I have decided to make a portable retro gaming handheld. One of the larger concerns for me when it comes to this is battery life. The Zero has very ...
0
votes
2answers
392 views
Making a battery pack UPS with GPIO signal
I'd loke to build a UPS for in-car use. I am powering my pi with a 12v to 5v DC-DC converter. I'd like to use a phone battery pack as the ones sold at dollar stores with a relay/transistor that sends ...
1
vote
2answers
460 views
Is halted a viable state for a battery powered pi zero long-term?
I'm building a battery powered device with a pi zero. The battery is a 3.7v LiPo w/ 2000mAh.
I want to be able to safely shutdown and restart the pi using a single switch or button. (preferably ...
