Introduction:
The ACCESS:bit is a bolt-on/clip-on board for the BBC
micro:bit simulating an access barrier. The ACCESS:bit has been designed to
have the ability to drive a single servo with barrier and a buzzer for sound.
It Includes a switch for turning the integrated 3xAAA battery supply on and
off. Fitted on the PCB is a regulated 3V supply to power the BBC micro:bit,
this connection is through the 5 pin BBC micro:bit connection pads
The ACCESS:bit has been designed so that the BBC micro:bit LED display can
be used to recreate warning lights, display stop and go symbols or be used
for light sensor activation.
ACCESS:bit for the BBC micro:bit
www.kitronik.co.uk/5646
Pinout
P0
Barrier
P1
Buzzer
P2
IO pin
3V
3V supply
0V
GND of BBC micro:bit
Connection:
5 x M3 countersunk screws
and M3 nuts allow the user to bolt the
ACCESS:bit onto the BBC micro:bit.
Crocodile clips also can be used
between the pads on the ACCESS:bit
and the matching pads on the BBC
micro:bit.
The table to the right gives the
connections between the BBC micro:bit
and the ACCESS:bit
Stand:
The bottom of the 3xAAA
battery cage acts as support for
the ACCESS:bit to stand upright.
Servo:
The servo is mounted on
the left hand side of the
ACCESS:bit. The servo lead is then
connected into the pin header on
the board.
ON/OFF
Switch
3xAAA battery
holder
53mm
125mm
SERVO
HEADER
BBC micro:bit
x5 connection pads
8
9
m
m
SERVO MOUNT
77.5m
m
5
5
m
m
BUZZER
30mm
14mm
1.6mm
Layout & Dimensions:
