DESCRIPTION:
Crystal X1 is a standard 12MHz, USB host USB device is higher than the required frequency accuracy, X1 error requirement is less than 0.4 ‰, ordinary 12MHz crystal basically meet the requirements. It is strongly recommended to shorten the length of the relevant lead to reduce interfe..
FEATURES:
Onboard 'slot, support a variety of power supply.
Lead all IO, work user function extension.
Onboard a CP2102, work was debugging by the user.
Onboard LED the and keys, compatible with the official allocation of resources, work for the user operation.
NRF51822 is an u..