Mechatronic Systems

MechBot Sensor Overview, Page 8 of 17

238

EE

1

7

240

F0

1

8

242

F2

1

9

244

F4

1

10

246

F6

1

11

248

F8

1

12

250

FA

1

13

252

FC

1

14

254

FE

1

15

Take care not to set more than one sonar to the same address, there will be a bus collision and very

unpredictable results.

Current Consumption

Average current consumption measured on our prototype is around 12mA during ranging, and 3mA

standby. The module will automatically go to standby mode after a ranging, whilst waiting for a new

command on the I2C bus. The actual measured current profile is as follows;

Operation

Current Duration

Ranging command received - Power

on

275mA

3uS

+/- 10v generator Stabilization

8 cycles of 40kHz "ping"

40mA

200uS

Ranging

11mA

65mS

max

Standby

3mA

indefinite

The above values are for guidance only, they are not tested on production units.

Code

From http://www.robot-electronics.co.uk/htm/srf08bx24.shtml

Connecting Multiple SRF08 Sonar Modules to the BX-24