Powering Atom Lite with 5V pins
pacaj2am last edited by
I tried to power the Atom Lite modules from 5V groove pin and failed miserably (if I connect same power supply to USB-C connector - everything works.
Is there more detailed schematics how is the powerline connected?
On this schema only 0.5A fuse is shown, but I have nothing else connected, so I shouldn't trigger that.
ajb2k3 last edited by
@pacaj2am You can power the Atom via the 5V in pin on the back of the atom.
robalstona last edited by
I connect a Li-po battery (3.7V) directly to bottom pins GND, 5V and atom lite works. But usb2uart and neopixel led may not work or works incorrectly depends of battery voltage. In my case i need only esp32 to works.
Dario last edited by
I have too experimented powering both Atom Lite and the Atom Matrix via the groove connector or via the headers pins and I noticed a weird thing. If the voltage is a little below 5V, for example 4.6 or 4.7 Volts it works fine. If the voltage is a little above 5V, for example 5.2V it power up but it never connect to internet.
felmue last edited by
from the schematic there should be no difference whether you power M5Atom via 5V on the Groove connector or the 5 V pin in the back. Measuring for continuity between Groove and the respective pins in the back also shows they are connected 1:1 and are the same.
Running a simple sketch on my M5Atom Matrix, which only connects WiFi and is showing that by changing the LEDs from red to green, I see that working ok with voltages from 2.8 V to 5.2 V.
BTW: I am getting the same results with an M5Atom Lite.