MicroPython Forum (Archive)

@Roberthh That is quite an impressive performance, mind it looks unusual to solder. I have booked marked it and am going to have a good read of the datasheet Am I reading it right when it says Input from 3v to 5v with output of 3.3v up to 1.6amp with switching converter efficiency of over 90% 6Mhz h...

There is a number of different ports for MicroPython on ESP32. I am using the unofficial one known as the the Laboris port. I have not had a problem with using the SD card with it in both 4 line mode and 1 line mode and do believe SPI mode has now been added to the port as well. see laboris port wik...

Another really interesting way of increasing battery lifetime would be to have a circuit that runs though a LDO to drop the voltage while the battery was highly charged but when the battery dropped below 3.6v then to have a mosfet to bypass and shut down the LDO so then the power loss and dropout vo...

I think drop out voltage will govern usable battery life a lot becuase if the drop voltage is too high then the regular will shut down long before you have used the capacity of the battery. 5112a224ce395fb479000003.png A Lipo should be discharged below 3v as it both damges the battery and can lead t...

I also wonder if you wanted to increase battery life running the ESP32 at 3v instead of 3.3v. The datasheet lists the voltage as 2.3v to 3.6v. Using a 3v LDO would allow you to use the vast majority of the Lipo battery and 3v will run most external chips you want to connect to it. I did a bit of res...

@Capstan Thanks for posting the links. If I understood the Youtube video with the guy with the Swiss accent correctly even though the Lipo had 20% waste in the LDO because it's capacity was so much higher than the other types of cells it still have a better size to usable capacity ratio, even better...

Generally I would only buy these little Lion batteries with a protection circuit. But in saying that most of these protection ciruits on these batteries will only protect from discharge below 2.8v which is below what is recommended for not to discharge below. For longer life of the cell don't discha...

If it helps I have used this https://github.com/jczic/MicroWebSrv to run a webserver that had websockets on my ESP32 but not sure if it works on a ESP8266 because of the limited RAM on the ESP8266.

Nice project :) I make my kids build their projects out of card board first and if they can make therm work but discovering all their mistakes then I let them laser cut them. I get them to print out their designs on paper then stick the printer paper on card board and cut it out. I clicked on the re...

I am in the process of implementing a battery monitor on my ESP32 controlled robots. For my purposes the small amount of current draw from a permanently connected voltage divider doesn't matter as I am using big batteries and my motor sdraw so much current the voltage divider doesn't really affect i...