Designing a low-power IoT gadget using nRF51822https://devzone.nordicsemi.com/f/nordic-q-a/42483/designing-a-low-power-iot-gadget-using-nrf51822I would like to design a BLE-controlled electronic device. My requirements are: 1- Very low power consumption. (Less than 200uA in IDLE mode) 2- Slow periodic BLE advertising, so a user with smartphone could find and connect to my device. 3- Myen-USTelligent Community 13Tue, 15 Jan 2019 08:05:11 GMTRE: Designing a low-power IoT gadget using nRF51822https://devzone.nordicsemi.com/thread/165646?ContentTypeID=1Tue, 15 Jan 2019 08:05:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:949f1022-70be-40d5-9cc6-9a02fb1f293cImanH<p>Thanks!</p> <p>I would actually like to replace Cypress PSoC 4 with nRF51822.</p><div style="clear:both;"></div>RE: Designing a low-power IoT gadget using nRF51822https://devzone.nordicsemi.com/thread/165452?ContentTypeID=1Mon, 14 Jan 2019 13:01:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8b54eb11-fb03-4218-bfd2-cc874b4e5816Einar Thorsrud<p>Hi,</p> <p>You will have no problem&nbsp;making this with the&nbsp;nRF51822, with a significantly lower idle current consumption. What you describe is a simple BLE peripheral device, so you can refer to one of the simpler BLE peripheral examples in SDK 12.3 (the latest with nRF51 support), for instance the <a href="https://www.nordicsemi.com/DocLib/Content/SDK_Doc/nRF5_SDK/v12-3-0/ble_sdk_app_template">Template Application</a>. I assume you will generate the interrupt for the CPU by toggling a GPIO twice, which you can do in the handling of the&nbsp;BLE_GAP_EVT_CONNECTED event.</p><div style="clear:both;"></div>