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→Improving the circuit
With low power consumption, the voltage regulator enter in power safe mode. This power safe mode still produce 3.3V but the ripple on the power rail is more important.
With low power consumption, the voltage regulator enter in power safe mode. This power safe mode still produce 3.3V but the ripple on the power rail is more important.
Disabling the Power Safe at low power consumption will greatly improve the power rail stability.
Disabling the Power Safe (with GPIO 23) at low power consumption will greatly improve the power rail stability.
<syntaxhighlight lang="python">
<syntaxhighlight lang="python">
from machine import Pin
from machine import Pin
Pin( 23, Pin.OUT, value=True ) # Disable PowerSafe
Pin( 23, Pin.OUT, value=True ) # Disable PowerSafe
</syntaxhighlight>
</syntaxhighlight>