1 being the shortest (aka fastest) release setting, this allows gain increases to happen quickly.Īmp.writeAttack(1) // 1-63 are valid values. for gain control to react to changes quickly, we need to adjust some of the AGC settings as so.Īmp.disableLimiter() // note this also changes compression ratio to 1:1, then disables limiter.Īmp.disableNoiseGate() // disabling the noisegate allows us to always change the gain, even with very little sound at the source.Īmp.writeRelease(1) // 1-63 are valid values. Serial.println("Device is connected properly.") Serial.println("The device did not respond. If (amp.begin() = false) //Begin communication over I2C Serial.println("Example 1 - Setting Gain Values.") #include //Click here to get the library: TPA2016D2 amp You should have received a copy of the GNU General Public License GNU General Public License for more details. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. This program is distributed in the hope that it will be useful,īut WITHOUT ANY WARRANTY without even the implied warranty of Use a qwiic cable to connect from the Redboard Qwiic to the Qwiic Speaker Amp.Ĭonnect audio-in, speakers, and power to the Qwiic Speaker Amp.įor information on the data sent to and received from the amplifier, SparkFun Qwiic Speaker Amp - TPA2016D2 Version: 1.0 Hardware Platform: SparkFun Redboard Qwiic Revision history: version 1.0 4 MDG Initial releaseĭo you like this library? Help support SparkFun. Included with the LilyPad MP3 example code found here: This code was originally created by Mike Grusin at SparkFun Electronics Times, then it only minimally effects gain changes. Note, you can't REALLY turn off the AGC on the TPA2016D2,īut if you disable the limiter, noisegate, and set fast release/attack To turn the sound off, use shutdown or enable/disable examples. Note, when gain is "0", it still passes sound through. Sets a few different gain values on the TPA2016D2 speaker amp. Then select the correct COM port that the board enumerated to (in this case, it was COM13). Select the correct board definition from the menu (in this case, Tools > Boards > Arduino Uno). Or you can copy and paste the following code in the Arduino IDE. Powerįrom the menu, select the following: File > Examples > Examples from Custom Libraries | SparkFun TPA2016D2 Arduino Library > Example_01_Gain. Note that you will need to send the configuration to the TPA2016D2 upon every power cycle. We've written an extensive Arduino Library (shown later in this tutorial) that allows you to easily control all of the amplifier's features from simple gain control to advanced AGC. Using the DRC, AGC, and/or the limiter alone allows you to protect your speakers from getting damaged by extremely loud playback. By fine-tuning the settings, you can get the most volume to prevent distortion of the audio signal. It also allows you to maximize the volume of your speakers. This is a powerful feature that allows you to "even out" the loud and quiet sections from your audio input. The DRC and AGC is unique compared to other audio amplifiers. It won't shake a stadium but it will provide plenty of volume for your audio projects. This is quite a bit more power than the mono amplifier (TPA2005D1) or Noisy Cricket stereo amplifier (LM4853). Its efficient class-D operation also means low heat and long battery life when driving 4Ω speakers at up to 2.8W in stereo, and 8Ω speakers at up to 1.7W in stereo. gain), Dynamic Range Compression (DRC), Automatic Gain Control (AGC), enable/disable amplifier, and its ability to be configured through software via I 2C. What distinguishes this audio amplifier from others is that it features volume control (i.e. Amplifier to Amplifier (Comparision of a few of SparkFun Audio Amps)
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