I have setup Arduino Uno with motion sensor & uploaded code for motion detect than a ordinary buzzer sounds (on any motion detect). However in the 1st 2 days everything was working fine until 3rd day now there are 3 Led blips & motion sensor stopped working. After 7 days I uploaded same code back into Arduino but when connected via USB cable the Uno & motion sensor works fine. But when I use the 5V battery (same for 1st days used) the motion sensor & Uno stopped working?
Is my 5V battery dead or something else? Thanks in advance.
I guess you have find the point. Do you have a multimeter to check voltage on your battery?
Please I am curious with this "5V battery" especially from a starter pack. I know 9V battery, I know 3,7V Li-ION, eventually 3,3V CR battery, or 1,5V alkaline, but there???
Yes I have multimeter but hmmm I don't know how to use it ? Any help in advance.
easy one.
Set your multimeter (for safety and good habits) to the Higher voltage range (maybe 2000V or so).
Get the black wire connected to GND of your multimeter to black wire of your battery.
Get the red wire connected to V+ of your multimeter to red wire of the battery.
If battery has no colored wired, your multimeter has internal diode that will protect him against short circuit, so no problem with a hand pocket battery, but you will have to shift the connection (put a mark for future use!).
If your battery is 5V at full life and then looks empty, the 2000V range is of course overratted. Change the voltage settings on your multimeter one step by one step till the "20V".
There, you must read the remaining voltage of your battery.
Hint: you see nothing on the multimeter screen with the "20V" settings? reverse the connection with the battery wires (and put a mark for future use!).
You really don't achieve to get a proper value to read? Get yourself any 1,5V alkaline battery (remote control of your tv for example) and test it. You should read approximatively 1,5V.
Please post a link to this "5V battery".
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Please post a link/spec info to the 5V battery.
That is a 9V PP3 battery.
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you should see it si a 9V battery.
thoses batteries have very little current amount, so not a surprise it last only few days (or few minutes with a servo or a motor).
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Thanks for the image.
9 volts does not equal 5 volts.
If you are using a 9V battery like this.
Expect short run times and many issues involving low power.
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That means if increasing duration of circuit what battery to use?
How long do you want the project to run on batteries?
How much current does the circuit draw?
Another issue I noted from the image.
Problem, bread board power rail split:
Solution, bread board power rail split:
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easy solution is to power your board thru USB port with your PC. There, you could also export data with Serial.print() function (wich I use a LOT for debugging).
Then, you could find in this forum many solutions to it, but usually requiring additionnal component: my car is powered up with 2 LI-ion batteries in series, connected to a H-bridge. This module export 5V I power my board with.
The remote control is powered by a spare 3,7V battery (from a cell phone) that is connected to a converter that feeds the board with 5V.
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This could be another reason why bread board is not working - I will fix this
Hi I tried to use the mastercraft multimeter & connected the 9V battery & as result got reading of 0.015V on display of multimeter?
Than as you said take TV remote battery & check the same I got result of 0.018V on display? What is going on? Am i reading incorrectly from multimeter of this model?
I have attached image of Multimeter & searched Youtube for tutorials videos & I have found only 1 video worth while fit exactly for this model.
you have a great device! mine in mainly "hand operated".
According to the 0.018V value from the remote control battery, I expect your multimeter was on 2000V scale or so.
With a correct scale factor, you should read 1,8V. And so maybe 1,5V for your 9V battery.
EDIT: connection looks ok on the multimeter itself. Try changing the scale with the "range" button underneath the screen
Thanks yes I figured this device has great functionality.
I pressed the range, it goes from ...
0.000 to
00.00
000.0
so which setting is correct for this reading?
But as I tested for each range setting I got results
mV 18v
V 0.015v
00.01 v
000.0
I feel both 9V battery & TV remote battery are weak. Need replacing new ones.
Boy! is the remote control functionning? For what I read, you did good for measurment.
But both batteries look very empty!
Any chance you have unused battery to test? The other solution would be take a look at the user guide of the multimeter. At least, you learnt how to check a voltage by yourself!
It's post#19 in post#8 you got this image,
At this point, why are you even messing with a 9V battery for this project?
Yes I am worried
A) if the multimeter is properly functioning
B) need to get new batteries to check by tomorrow
Thanks for feedback learn something new from a very detailed specific task multimeter ( its not your average Joe type ).