Hi
I have the Little Soundie playing files but only after I hit the ‘power/play’ button. Obviously one would not want to hit this play button physically. Is there a pin on the board that acts like the button so that I can control it with an Arduino?
I am powering it from my breadboard with 3V. If I cut the power and then bring it back it won’t play sounds until I hit the ‘Power/Play’ button. There has to be a way to skip hitting the button.
What am I missing?
Thanks
The pin labeled “PB” will act like the button. See section 3.7 of the Datasheet for the VS1000.
3.7 Power Button Characteristics
When the PWRBTN input is high the internal regulators get start signal so that they activate
and the vs1000 starts normal operation. Unless otherwise noted: VHIGH = 4.0…5.3 V
Parameter Min Typ Max Unit
PWRBTN pulse 10 ms, 2.3 V
Note: PWRBTN is both an analog input pin and a digital input pin, so the voltage on the pin
should not exceed 3.6 V.
Note: PWRBTN generates a RESET if it is continuously asserted for approximately 5.6 seconds.
If the application is intended to turn on automatically when power is applied instead of a press
of a power button, a capacitor and a suitable resistor divider can generate a pulse to PWRBTN
from the supply voltage. However, care must be taken that the voltage limit of 3.6 V is not
exceeded.
Figure 1: Typical PWRBTN pulse and minimum requirement
A PWRBTN pulse generated from a 5 V VHIGH using a 1µF capacitor and a 56kΩ/100kΩ
resistor divider. PWRBTN is at or above 2.3V for a duration of about 22 ms, which is well over
the guaranteed activation time.
I appreciate your help. I am so used to following tutorials and instructions that I never think that it might be worth looking at the Datasheet.