https://devzone.nordicsemi.com/f/nordic-q-a/7229/flicker-in-buzzerHi I am using timer1 for generating 4khz input to buzzer.It works fine when no ble starts.When advertising starts buzzer shows some flickers according to advertising time interveltime intervel.when connected it buzzer sounds continuous flicker. Testeden-USTelligent Community 13Tue, 26 May 2015 13:00:58 GMThttps://devzone.nordicsemi.com/thread/25551?ContentTypeID=1Tue, 26 May 2015 13:00:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9e27e6bd-0ddb-4a8c-bcb6-5183b6906245Honey<p>Added pwm library for buzzer in ble_app_uart example with using soft device.But still also buzzer shows the same flickering problem.Each advertizing or radio using time it shows flicker.I think pwm library is using ppi without using cpu..then why should same problem occur.how to solve this problem????Code is provided below</p> <p><a href="https://devzone.nordicsemi.com/cfs-file/__key/communityserver-discussions-components-files/4/7823.ble_5F00_app_5F00_uart_5F00_pwm.zip">ble_app_uart_pwm.zip</a></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/25552?ContentTypeID=1Sat, 23 May 2015 12:25:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b5e03af5-9659-4034-9ea4-7d72224a118aRK<p>Don&#39;t use a timer - use PPI to generate the PWM waveform. This question or something similar gets asked about 10 times a week so a quick search for PWM should give you lots of answer and point you to the Nordic PWM module you can use.</p><div style="clear:both;"></div>