Natalie Kane writes:
Nora is the most recent approach to cram up everything of the recent prototypes but use only 2 layers and populate all of the components on one side. Nora is the smallest board with a LiPo charger yet, measuring just 23.5 mm x 23.5 mm.
Nora is the first version having the IRQ (or ‘interrupt’) from the nRF24L01+ radio connected to the micro controller. Additionally, the accelerometer and gyroscope IRQ is also connected to the micro controller, which was not the case with the Avoccado° prototypes before.