RFD22127, Single AAA Battery Shield based on one 1.5V AAA Battery
Thiết kế tham khảo bởi: ams OSRAM
RFD22127, Single AAA Battery Shield based on one 1.5V AAA Battery. It has a step-up regulator that supplies 3.3V output, even when the 1.5V AAA battery drops in voltage as they run down over time
