One reason, several more besides this
Continuing the discussion from Arduino Uno 9v batteries and sensors, an observation:
9V batteries aren’t ideal for devices that draw quite a lot of power…….
(They are made for smoke detectors which are low power……….)
Continuing the discussion from Arduino Uno 9v batteries and sensors, an observation:
9V batteries aren't good power supplies to begin with; don't bother with them. Save them for your smoke alarms.