RDIoT Demo

Bluetooth Audio Receiver Board [B210]

https://www.youtube.com/watch?v=k3NmiGb3d9E

* Specs

Audio input mode:Bluetooth receiver

USB decode and play

TF card decoding playback

Support Playback Format: MP3，WMA，WAV，FLAC

Power Supply: DC 5V (original phone charger can power small USB plug)

Board Size：50 x 40mm

Preamp output can be directly promote the headset and also can be followed

by the use of the power amp

* Contents

- Connect 

- Sample

Infrared distance sensor (GP2Y0A21YK0F) [S036]

https://www.youtube.com/watch?v=GhNwmtpVTY4

*GitHub : https://github.com/rdiot/rdiot-s036.git

* Specs

operating voltage: 4.5 V to 5.5 V

average current consumption: 30 mA (typical)

distance measuring range: 10 cm to 80 cm (4" to 32")

output type: analog voltage

output voltage differential over distance range: 1.9 V (typical)

response time: 38 ± 10 ms

package size: 29.5×13.0×13.5 mm (1.16×0.5×0.53")

weight: 3.5 g (0.12 oz)

* Contents

- DataSheet : http://www.sparkfun.com/datasheets/Components/GP2Y0A21YK.pdf

- Connect 

Yellow ----- A0

Black ----- GND

Red ----- 5V

- Key Code

int pin = A0;

int I = analogRead(pin);

int value = (6762 /(I-9)) -(4);

lcd.print("distance=" + (String)value + "CM  ");