# Adafruit TRRS Jack Breakout Board ## Overview ![](https://cdn-learn.adafruit.com/assets/assets/000/121/761/medium800/adafruit_products_TRRS_top.jpg?1686608249) Tip-Ring-Ring-Sleeve style audio cables are often used for situations where you want stereo audio and then an extra contact for a microphone input. [For example, headsets for cell phones](https://www.adafruit.com/product/3959). Also called TRRS jacks for short, they're also handy if you happen to want to use common audio cables for low-speed data transmission with power, ground and two data lines. ![](https://cdn-learn.adafruit.com/assets/assets/000/121/762/medium800/adafruit_products_TRRS_connecting.jpg?1686608264) This breakout board is simple but has everything you need to interface with TRRS cables. Not only do you get the four contacts, but also two switched outputs: - When the jack is _not inserted_, the left switch is connected to the left contact and the right switch to the right contact. - When the jack _is inserted_, the left and right switch pins 'float'. You can use these switches to auto-switch from a built in speaker to headphone when plugged in, or [to detect when headphone is not inserted to power down or mute](https://electronics.stackexchange.com/questions/95575/how-does-the-phone-detect-if-3-5-mm-jack-circuit-is-closed). ![](https://cdn-learn.adafruit.com/assets/assets/000/121/763/medium800/adafruit_products_TRRS_jack_side.jpg?1686608278) We like this jack in particular because it has two through-hole contacts near the opening for a good mechanical connection. Comes fully assembled on a breakout board with mounting holes and lil bit of header in case you want to use it with a breadboard. ![](https://cdn-learn.adafruit.com/assets/assets/000/121/764/medium800/adafruit_products_TRRS_top_header.jpg?1686608285) # Adafruit TRRS Jack Breakout Board ## Pinouts ![](https://cdn-learn.adafruit.com/assets/assets/000/121/767/medium800/adafruit_products_TRRS_top_pinouts.jpg?1686608457) These are the TRRS jack breakout board pins. - **Sleeve** - This is the microphone pin (the sleeve or **S** in TRR **S** ). - **Right** - This is the right audio pin (the first ring or **R** in T **R** RS). - **RSw** - This is the right switch pin. When the plug is _not_ inserted, this pin is connected to the right contact. When the plug _is_ inserted, this pin will float. - **LSw** - This is the left switch pin. When the plug is _not_ inserted, this pin is connected to the left contact. When the plug _is_ inserted, this pin will float. - **Left** - This is the left audio pin (the tip or **T** in **T** RRS). - **Ring** - This is the ground ring pin (the second ring or **R** in TR **R** S). # Adafruit TRRS Jack Breakout Board ## Downloads ## Files - [EagleCAD PCB Files on GitHub](https://github.com/adafruit/Adafruit-TRRS-Jack-Breakout-PCB) - [Fritzing object in the Adafruit Fritzing Library](https://github.com/adafruit/Fritzing-Library/blob/master/parts/Adafruit%20TRRS%20Jack%20Breakout.fzpz) # Schematic and Fab Print ![](https://cdn-learn.adafruit.com/assets/assets/000/121/757/medium800/adafruit_products_TRRS_sch.png?1686607574) ![](https://cdn-learn.adafruit.com/assets/assets/000/121/759/medium800/adafruit_products_TRRS_fab_print.png?1686608043 Dimensions are in inches) ## Primary Products ### Adafruit TRRS Jack Breakout Board [Adafruit TRRS Jack Breakout Board](https://www.adafruit.com/product/5764) Tip-Ring-Ring-Sleeve style audio cables are often used for situations where you want stereo audio and then an extra contact for a microphone input. [For example, headsets for cell phones](https://www.adafruit.com/product/3959). Also called TRRS jacks for short, they're also... 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