I'm having difficulties powering my project. Here are the parts I'm using:
Arduino Nano, MPU-6050, microSD Card Logger, and a 9v Battery
Basically, I want to collect at least 3 minutes worth of data from the mpu and save it into a microSD in the SD Logger. When powered by my computer through the nano, it was able to collect 4-5 minutes of raw data. But when I powered with the 9v battery, it was only able to record a few seconds before stopping.
Any recommendations on what to do? This is my first project so I'm quite lost.
9V battery, the small square type, only have 300-400mAH of capacity.
And the first thing that happens is the 9V gets knocked down to 5V or 3.3V, so a bunch of heat is created in linear regulators and dissipated away.
9V battery, the small square type, only have 300-400mAH of capacity.
And the first thing that happens is the 9V gets knocked down to 5V or 3.3V, so a bunch of heat is created in linear regulators and dissipated away.
Do you have any recommendation for what battery I can use? Or would anything higher than 9v work?
CrossRoads:
Yes, try a 6 AA battery pack. AAs are more in the range of 2500mAH capacity and intended for higher current draw, will provide much better results.
9volt is connected to the 5volt pin, which will fry the Nano.
MPU is powered from the 9volt battery, and should be powered from the 5volt pin of the Nano.
The SD card should also be powered from the 5volt pin, but a Nano could be struggling to provide the current for the SD card long term with 9volt on the V-in pin (borderline too high, regulator could get too hot).
If you power the Nano with a 5volt cellphone charger connected to the USB socket,
then you can safely power the MPU and SD card from the 5volt pin.
Same for a powerbank, but it could switch off after a few seconds because of a too light load, depending on the powerbank.
Six AA batteries, connected to V-in, with the MPU and SD powered from the 5volt pin of the Nano could work.
But keep an eye on the temperature of the 5volt regulator on the bottom of the board.
Leo..
9volt is connected to the 5volt pin, which will fry the Nano.
MPU is powered from the 9volt battery, and should be powered from the 5volt pin of the Nano.
The SD card should also be powered from the 5volt pin, but a Nano could be struggling to provide the current for the SD card long term with 9volt on the V-in pin (borderline too high, regulator could get too hot).
If you power the Nano with a 5volt cellphone charger connected to the USB socket,
then you can safely power the MPU and SD card from the 5volt pin.
Same for a powerbank, but it could switch off after a few seconds because of a too light load, depending on the powerbank.
Six AA batteries, connected to V-in, with the MPU and SD powered from the 5volt pin of the Nano could work.
But keep an eye on the temperature of the 5volt regulator on the bottom of the board.
Leo..
Thank you so much. I understand it a lot better now.
If you could find a way to wire up just 5, that would help the regulators run cooler.
Or 3, or connect to the 5V headers on the boards, bypass the 5V regulators. Not into Vin. Vin feeds the regulator, 4.5V into that will not work correctly.
This board is basically a Promini with extra components (offboard USB used for programming). Runs fine with 4.5V into VCC for the 5V parts, and into a 3.3V regulator for the SD card components.
CrossRoads:
If you could find a way to wire up just 5, that would help the regulators run cooler.
Or 3, or connect to the 5V headers on the boards, bypass the 5V regulators. Not into Vin. Vin feeds the regulator, 4.5V into that will not work correctly.
This board is basically a Promini with extra components (offboard USB used for programming). Runs fine with 4.5V into VCC for the 5V parts, and into a 3.3V regulator for the SD card components.
