# Which crossfader/mixer design to use? **URL:** \ **Category:** DIY STUFF\ **Created:** [March 16, 2021, 9:26pm UTC](https://lookmumnocomputer.discourse.group/t/which-crossfader-mixer-design-to-use/3182 "2021-03-16T21:26:53Z")\ **Posts on this page:** 1\ **Showing post:** 18
**Author:** ![Jos](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/jos/32/151_2.png) [@Jos](https://lookmumnocomputer.discourse.group/u/Jos)\ **Post date:** [December 29, 2022, 8:22pm UTC](https://lookmumnocomputer.discourse.group/t/which-crossfader-mixer-design-to-use/3182/18 "2022-12-29T20:22:13Z")
Maybe “a bit more” elaborate, but if you want control over a cross fader, maybe this could interest you: > [@PWM fader experiment](https://lookmumnocomputer.discourse.group/t/pwm-fader-experiment/3474): > > I wanted to experiment with an audio fader based on the use of 2 analog switches. The switches are used to either choose the signal from source 1 or the signal from source 2 and connect it to a buffering op-amp. Have a look at the diagram: The switches are switched on alternating with a high frequency. The duration a switch is ON determines the net amount of signal you hear from the connected source. By using pulse width modulation the duration can be changed and one can e.… In the experiment described I used an arduino nano to control the duty cycle of a pulse that controls 2 analog switches, but that could be simplified by using a 555. --- _[View the full topic](https://lookmumnocomputer.discourse.group/t/which-crossfader-mixer-design-to-use/3182)._