How to interface buzzer with nRF51822 ?

[Yogesh]

Can anyone please provide hardware design details? And steps to program it.

[Øyvind Karlsen]

I'm not sure what it is you want, do you want a button to be pressed and then make a buzzer sound somewhere else using BLE?

[Yogesh]

No. I wish to buzz a buzzer through mobile application or vice versa. Like buzzing a phone over bluetooth.

[Øyvind Karlsen]

Hi,

I think my answer in this post covers a lot of what you want to do.

For hardware design details I am not entirely sure what it is you want, but there are definitely a lot of considerations to make. I would recommend getting your prototype working using the development kit and an app before starting design on your PCB.

Since you want to make a buzzer sound you have two options for generating this sound. You can use PWM with external filtering and then pass that to your speaker, or you can do a hack on the ADC(Analog-to-digital converter) to make it perform like a DAC(Digital-to-analog converter).

When you get around to making the layout for your PCB, be sure to check out the general PCB design guidelines.

Hopefully this answers you question. Best regards,

Øyvind

[Yogesh]

Thank you @Øyvind Karlsen ! Can you tell if nordic charge for compiler, sdk environment? I mean what would be the development cost for the same ?

[Øyvind Karlsen]

We provide the SoftDevices and SDKs free of charge. The development costs are going to be:

• IDE, this can cost money, a free alternative is Eclipse which uses the GCC compiler)
• If you want to use Bluetooth Low Energy in your application you will have to pay the adopters fee, which is ~2500 Dollars. There is also regulatory testing that has to be done in order to qualify, this will set you back a little as well. Please find more information on Bluetooth SIG pages.
• For making the PCB you might want to use Altium, which will also cost you money, however it is possible to use the free alternative Eagle.