Placa Programable Microbit Para Proyectos Steam Robótica

Descripción

Hardware Description:

Model Nordic nRF51822-QFAA-R rev 3
Core variant Arm Cortex-M0 32 bit processor
Flash ROM 256KB
RAM 16KB
Speed 16MHz
Debug SWD, jlink/OB

Bluetooth Wireless Communication:
item details
Stack Bluetooth 4.1 with Bluetooth low energy
Band 2.4GHz ISM (Industrial, Scientific and Medical) 2.4GHz..2.41GHz
Channels 50 2MHz channels, only 40 used (0 to 39), 3 advertising channels (37,38,39)
Sensitivity -93dBm in Bluetooth low energy mode
Tx Power -20dBM to 4dBm in 4 dB steps
Role GAP Peripheral
Congestion avoidance Adaptive Frequency Hopping
Profiles BBC micro:bit profile

Low Level Radio Communications

item details
Protocol Micro:bit Radio
Freq band 2.4GHz
Channel rate 1Mbps or 2Mbps
Encryption None
Channels 101 (0..100)
Group codes 255
Tx power Eight user configurable settings from 0(-30dbm) to 7 (+4dbm)
Payload size 32 (standard) 255 (if reconfigured)

Buttons:
item details
Type 2 tactile user buttons, 1 tactile system button
Debounce (A & B) software debounced, 54ms period
Pullup (A & B) external 4K7, (System) 10K

Display:
item details
Type miniature surface mount red LED
Physical structure 5x5 matrix
Electrical structure 3x9
Intensity control 10 steps
Intensity range TBC
Sensing ambient light estimation via software algorithm
Sensing Range TBC, 10 levels from off to full on
Colour sensitivity red centric, red is 700nm

Motion sensor:
item details
Model LSM303GR
Features 3 magnetic field and 3 acceleration axes , 2/4/8/16g ranges
Resolution 8/10/12 bits
On board gestures ‘freefall’
Other gestures Other gestures are implemented by software algorithms in the runtime.

Temperature Sensing:

item details
Type on-core nRF51
Sensing range -25C .. 75C
Resolution 0.25C steps
Accuracy +/-4C (uncalibrated)