https://devzone.nordicsemi.com/f/nordic-q-a/379/how-to-configure-design-the-nrf51822-bluetooth-profilewe want to develop Educational toys. the toys is communication with the IOS \ Android APP .when power on ,the toys start to sent the package with a frequency of 200 HZ, and until power off. we have some questions as follows: 1.Does the nRF51822 chipen-USTelligent Community 13Thu, 29 Aug 2013 09:38:39 GMThttps://devzone.nordicsemi.com/thread/1991?ContentTypeID=1Thu, 29 Aug 2013 09:38:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7aa4e5e9-c0eb-42a5-a72e-6e5712bced0dOle Morten<p>With BLE, the lowest connection interval you can have is 7.5 ms, and iOS limits this further to between 20 and 40 ms. This means that you will not be able to transmit at a full 200 Hz.</p> <p>To develop a custom service, I suggest you browse around and search a little here on the Developer Zone, as this has been discussed extensively previously. See for example <a href="https://devzone.nordicsemi.com/index.php/how-do-i-create-my-own-service-on-the-ble-stack">this question</a>.</p><div style="clear:both;"></div>