Datasheet

Speaker
In addition to outputing sound via PWM on the pins, the micro:bit has a PCB mounted
magnetic speaker to which sound output is mirrored.!
Microphone
An on board MEMs microphone provides a sound input to the micro:bit and a built in LED
indicator on the front of the board shows the user when this is powered.!
The microphone has an external bias circuit of 33K:1K (power to ground) and is AC-
coupled to the microphone input pin.!
General Purpose Input/Output Pins
The edge connector brings out many of the GPIO circuits of the application processor.
Some of these circuits are shared with other functions of the micro:bit, but many of these
Accuracy
+/-5C (uncalibrated)
More Info
DAL Thermometer
item
details
item
details
Type
JIANGSU HUANENG MLT-8530
SPL
80dB @ 5V, 10cm
Self-resonant frequency
2700Hz
More Info
Datasheet
item
details
Type
Knowles SPU0410LR5H-QB-7 MEMS
Sensitvity
-38dB ±3dB @ 94dB SPL
SNR
63dB
AOP
118db SPL
Frequency range
100Hz ~ 80kHz
Polar pattern
Omnidirectional
More Info
Datsheet
7
© Micro:bit Educational Foundation 2020