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Questions tagged [lipo]

21 questions
8
votes
3 answers

USB and Arduino: Power Arduino, charge LiPo, and transfer data at the same time

I was hoping to design my own Arduino board for a recent project of mine, a portable project that was powered by a 3.7 LiPo battery. Most ideally, I wanted to replace the USB B port with a single USB Micro port that implements the following…
George Troulis
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7
votes
3 answers

Can you charge and use a Li-po battery at the same time?

I have a system that uses an Arduino Uno board as a "brain". All the elements in the system are powered by a single Li-po battery (3-cell, 11.1 V, 1800 mAh). I made a circuit so the Arduino can check the battery voltage and decide when it needs to…
Miguel
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5
votes
1 answer

No power from Breadboard Power Supply Module

Components Breadboard Power Supply Module IM120525004 1 kOhm resistor Green LED Arduino Nano LiPo 7.4V battery LED Lights Up Fine with USB power from the Arduino LED Does Not Light Up with power from the Supply Module What am I doing…
Cel
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4
votes
1 answer

Measure lipo voltage while powering arduino

I have a arduino pro micro 5V that I want to power with a 3.7V lipo. I also have a charging module to charge the lipo.…
Robbe
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1
vote
1 answer

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 with. I came up with this example schematic to…
macroController
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1
vote
0 answers

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 to boost the voltage to 5V and that powers the…
Ivan Novikov
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1
vote
1 answer

Can arduino nano drive two circuit

I am building a robot snake with a bunch of servos and ov7670. As I see, ov7670 operate with 3.3v and servos needs 5v. I will use Lipo battery for servos for this I need to connect ground pin of arduino and input of battery. But For ov7670, I…
HollyPolly
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1
vote
1 answer

How do powering arduino both barrel jack and lipo battery together?

I have arduino mega and Lipo batterry such this and Lipo battery charger 5V USB Boost. I am powering arduino normally from barrel Jack with an 9 Volt adaptor. But if there is power cut occur, I dont want to stop, I want powering arduino with Lipo…
mehmet
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1
vote
2 answers

Read battery voltage from battery which is powering arduino

I have a 5V arduino pro micro. I want to power it with a 3.7V lipo. Should I use a step up module to convert it to 5V? I also want to measure the voltage of the battery. How can I do this? Because I read that the power source also the…
Robbe
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1
vote
1 answer

Powering a Tiny Arduino Project

I'm trying to build a tiny project. After I program the board, to power the dev board - how can I power it to run the code? Question: I was curious as to how I would be able to power the ATtiny85 USB Mini Dev Board by using a 90mAh 3.7V LiPo…
3kstc
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1
vote
1 answer

LiPo + charge/boost circuit vs pre-built "power bank" - contrasting portable power sources

Portable 5V power for my projects - I was about to get the necessary parts to wire up an OEM LiPo battery (3.7V battery, boost circuit, charging circuit) when I took a peak at pre-built "power banks". From all the sources I see the LiPo batteries…
nate
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1
vote
1 answer

Need to turn on project twice in order for screen to work!

This problem is really stumping me. I made a simple printed circuit board with an ATtiny85, a 128x64 I2C OLED display, and a Sharp IR analog distance sensor. You can view the circuit here: circuits.io. If I turn the system on using the simple 3-pin…
Alex Wulff
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0
votes
1 answer

Relay + Arduino uses too much power for battery to handle. Which solution is best?

You can see in my crumby schematic that I am using a Non-latching relay to turn on a 3A circuit (one of them arc lighters), which is powered by a 25C (supposedly) lipo battery. That same battery also powers an Arduino through a TP4056. This works…
Robert S
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0
votes
1 answer

Charge lipo battery while using

I have a system that uses Arduino and some modules. The system needs 5v dc power with 3A current at maximum(The system needs 3A current for some seconds every 5 minutes and after that the current will get back to 300-400mA) and on the other side i…
user3866081
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0
votes
2 answers

Lipo Battery level display using nodemcu

I'm designing a connected collar for pets for a project, for this I am using a nodemcu on ESP8266 powered by a Lipo battery I'm guessing around 1000mAh of capacity is enough for a respectable autonomy (? any advices). Lipo model :…
SalmaG
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