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- เผยแพร่เมื่อ 14 มี.ค. 2018
- This is a tutorial that shows how I run my Arduino devices on batteries that are below 5V.
Using a DC-DC boost converter that bumps up the voltage from 1 volt to 5 volts.
Article about Arduino power pins:
circuitjournal.com/arduino-po...
Buy from Aliexpress:
1 to 5V to 5V: s.click.aliexpress.com/e/_AT8OdW
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Hi. What are those pins below the DC-DC converter. The one I ordered doesn't have them. Also how did you connect the female type pins to the wires of the battery holder? Is there a tutorial for them?
Thanks! That was exactly what I was looking for. When the voltage drops too low from the battery does the converter shut off or does it pass along the low voltage?
I don't know. I believe it's most likely to be flickering on and off.
Great! Thank you
Hi! I'm trying to make a flashmeter based on nano, however I have some questions about this approach.
Would I be able to connect the arduino via USB for making some little changes in the sketch provided that this module is already soldered on a perfboard? Or will that burn the boost converter? Do I need to disconnect it from 5v pin before trying to load a new sketch? Would a diode protect the module from reverse voltage while powering via USB?
Thank you!
Hey! Yes, you can connect the USB cable to the Arduino nano and upload new code while the device is also connected to the boost converter. I have done this and have never had any issues.
Just a side note. If I remember correctly then the STM32 Blue Pill board had a problem where the 3.3V power input couldn't be used at the same time with the USB programmer. But Arduino doesn't have that problem.
@@IndrekL thanks a lot for your response! Very useful and informative video!
Thanks! Very useful! But, how long will it power the Arduino assuming there is no external load?
Hey! Sorry for the late answer. TH-cam didn't notify me about your comment.
I haven't tested it, but here is my rough guess. A good AA battery can be around 2500 mAh. The conversion from 1.5 V to 5 V is not perfect, but let's say about one to five. So 2500/5 = 500mAh @5V. Arduino itself consumes about 80mA. 500/80 = 6.25h. So my guess is about 6 to 7 hours of continuous run.
There are 2 instruments to be powered, a microcontroller and a LiDar sensor. I know that the microcontroller has an operating voltage of 5V, and the sensor, from the spreadsheet, will use 110mA at 5V. Now my question is what kinds of external power supply should I be exploring? I want to look at using AA batteries for this project, that can last at least 6 hours each use. I see that you said typically it would be 6.25 hours for the AA batteries. I’m just quite unsure how to find out if this is feasible and how long the battery will be able to power the microcontroller and sensor. Another issue is if the power usage section on the spreadsheets display its usage in Watts, how can I determine if the battery is sufficient if the battery’s specifications are in Volts and mAh?
Hey! I think it would be best if you could wire everything up and then actually measure how much milli-amps does your circuitry take from the battery. Then you can calculate the hours based on the batteries mAh. And then do an actual test to see if it matches the expectation. If not then add more batteries.
But you can calculate amps from wattage:
www.rapidtables.com/calc/electric/Watt_to_Amp_Calculator.html
Can't I just use an AC/DC 9 volts adapter?
Is the inner side positive or negative on my Arduino Mega 2000?
Can i connect
OLED I2C screen
Gps module
Triple axis digital compass
With arduino nano.
What and how much power source is required?
How would you do this if you have an LED connected to 5V? Is there another pin you can put the LED on? I'm referring to the Arduino Nano.
you could use the digital pins to manually program the led, or you can just use a breadboard, or 3.3v would be pretty bright on a singular led too
i want to power arduino uno ,lux sensor and 16*2 lcd display.which battery i can use
i want 5v for lcd and sensor
Hey!
If your batteries give out more than 6+ volts then you can connet them directly to the Arduino VIN pin. For example a 9V battery or five 1.5V AA batteries in series.
Or you could use one to three 1.5V AA batteries with a boost converter, like I do in this video.
It's hard to use four AA batteries, since when full they are 6 V total, and when almost empty they are closer to 4V.
If you coose to use AA batteries, then I recommend at least three so you have longer lifetime for the device.
What Happens when the Batteries stay so long, That they drop down to 0V? Would it effect the arduino or dc/dc converter while falling under 1V? Would it be harmful for the arduino?
In my experience and to my knowledge, no. The Arduino will just shut down if the provided current is too low.
How can you get more out than what you put in?
Be careful with these cheap converters if you're using RF communication in your project - they create a lot of interference!
Unfortunately I'm not aware of a *reliable* and cheap way to measure this. I made a prototype once for a client, with 433MHz transmitter and a boost converter (of the green kind you showed) - its transmission range was extremely poor until I moved the converter about two inches away and covered it with insulation tape and aluminum foil!
Hi I was asking myself if it was possible to user rechargeable AA batteries if you want to recharge them :)
Hey! Yes, you can use rechargeable batteries also.
@@IndrekL Then how would I incorporate a charging circuit in t
I thought you just wanted to use a rechargeable battery and charge them in a separate charger.
I haven't done battery charging circuits myself. You probably need some charging module for it to be safe.
Witch diode should I use? New to electronics.
Hey! It depends how much current you need to use. For example, for powering Arduino I have used the 1N4007. It is rated for 1Amper of continuous current. If you need it for a motor then you probably should find one that can handle more.
in order not to buy new batteries all the time , is there anything else we can do so not to lose money on batteries
Sir, can this method applied on arduino nano??
Yes, Arduino Uno and Arduino Nano are basically the same.
what is the thing you connected to the wire at 00:52
It's the DuPont connector
Ican't connect the battery directly to ardunino but connect to some tiles and then to ardunino?
Yes because AA battery is only 1.5V. Arduino needs 5V. If you use a 9V battery then you can connect it directly to the power input without any additional modules.
@@IndrekL only above 9 volts or maybe a little less?
@@-kalox6946 Arduino power input (or the VIN pin) needs 7 to 12V. If the 9V battery is a little less when it starts to get empty then it probably is still OK.
what if...i dont have the battery holder... i wont get electrocute right? sorry im new =.=
No, the voltage is very low.
Imported Chinese items now more expensive Trumped out UPS postage agreement ETC.
what the heck, hahahaha. Is because corona war ?