├── .gitattributes ├── files ├── board.png ├── route.pdf ├── route.png ├── stand.png ├── schematic.pdf └── stand_photo.png ├── base ├── picoAUDIO base.stl ├── Speaker Pin Shroud.stl ├── Headphone Pin Shroud.stl └── README.md ├── gerbers └── Pico Audio v0.20_2019-08-25.zip ├── LICENSE └── README.md /.gitattributes: -------------------------------------------------------------------------------- 1 | # Auto detect text files and perform LF normalization 2 | * text=auto 3 | -------------------------------------------------------------------------------- /files/board.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/AdamKeher/Pico-Audio/HEAD/files/board.png -------------------------------------------------------------------------------- /files/route.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/AdamKeher/Pico-Audio/HEAD/files/route.pdf -------------------------------------------------------------------------------- /files/route.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/AdamKeher/Pico-Audio/HEAD/files/route.png -------------------------------------------------------------------------------- /files/stand.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/AdamKeher/Pico-Audio/HEAD/files/stand.png -------------------------------------------------------------------------------- /files/schematic.pdf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/AdamKeher/Pico-Audio/HEAD/files/schematic.pdf -------------------------------------------------------------------------------- /files/stand_photo.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/AdamKeher/Pico-Audio/HEAD/files/stand_photo.png -------------------------------------------------------------------------------- /base/picoAUDIO base.stl: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/AdamKeher/Pico-Audio/HEAD/base/picoAUDIO base.stl -------------------------------------------------------------------------------- /base/Speaker Pin Shroud.stl: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/AdamKeher/Pico-Audio/HEAD/base/Speaker Pin Shroud.stl -------------------------------------------------------------------------------- /base/Headphone Pin Shroud.stl: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/AdamKeher/Pico-Audio/HEAD/base/Headphone Pin Shroud.stl -------------------------------------------------------------------------------- /gerbers/Pico Audio v0.20_2019-08-25.zip: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/AdamKeher/Pico-Audio/HEAD/gerbers/Pico Audio v0.20_2019-08-25.zip -------------------------------------------------------------------------------- /base/README.md: -------------------------------------------------------------------------------- 1 | # picoAUDIO 2 | A 3d printable base for the picoAUDIO kindly modelled and provided by Unexpected Maker. 3 | 4 | ![XCopy Board Image](https://github.com/AdamKeher/Pico-Audio/blob/master/files/stand.png) 5 | ![XCopy Board Image](https://github.com/AdamKeher/Pico-Audio/blob/master/files/stand_photo.png) 6 | 7 | https://unexpectedmaker.com/ 8 | 9 | ## Features: 10 | * Raises the picoAUDIO board off the benchtop giving clearance to the pins on the underside of the board. 11 | * Built in standoffs and a flat bottom provide more contact points to the board, increasing stability. 12 | * The bottom of the stand has cut outs to allow the underside pin markings to be visible. 13 | * Does not increase the boards footprint. 14 | 15 | ## Note 16 | This base requires 2.5mm / M2.5 screws to fix the picoAUDIO to the mounting posts on the base. It is suggested that nylon screws be used to minimise the chance of shorting nearby buttons. If metal screws are used, ensure the head size is small enough to avoid contact with the buttons. -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright 2019 AKsevenFour / Adam Keher (adam@keher.com.au) 4 | http://www.aksevenfour.com / https://github.com/AdamKeher 5 | 6 | Permission is hereby granted, free of charge, to any person obtaining a copy 7 | of this software and associated documentation files (the "Software"), to deal 8 | in the Software without restriction, including without limitation the rights 9 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 | copies of the Software, and to permit persons to whom the Software is 11 | furnished to do so, subject to the following conditions: 12 | 13 | The above copyright notice and this permission notice shall be included in all 14 | copies or substantial portions of the Software. 15 | 16 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 19 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 | SOFTWARE. -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # picoAUDIO 2 | The audio solution dedicated to the TinyPICO. 3 | 4 | Arduino Support Library: https://github.com/AdamKeher/Pico-Audio-Arduino 5 | 6 | 3d printable base: https://github.com/AdamKeher/Pico-Audio/tree/master/base 7 | ## About 8 | The picoAUDIO is a fully featured audio solution specially made for the TinyPICO ESP32 development board, featuring an I2S Stereo DAC, I2S Mono MEMS Microphone, builtin 3.7W Stereo Amplifier, dedicated Headphone Amplifier, I2C GPIO Extender and built-in MicroSD card reader. 9 | 10 | We utilise a low power NXP UDA1334A IC featuring a clear digital 16/20/24 bit, 44.1kHz, stereo audio DAC. Accompanying the DAC is a Knowles SPH0645 I2S digital mono microphone. This miniature low power MEMS microphone provides a low noise, 24 bit, 44.1kHz stream. Complimenting the DAC is the powerful Maxim MAX98306 3.7W stereo class D amplifier with stero speaker terminals and a Texas Instrumets TPA6132A2 stereo headphone amplifier with 3.5mm audio jack. 11 | 12 | A simple mounting socket hosts the TinyPICO development board and connects all of these great features together in a seamless and easy to utilise footprint measuring a tiny 33 mm x 57 mm (1.29in x 2.24in). To provide maximum connectivity the board features a built-in MicroSD card reader and GPIO extender to hookup 8 inputs and outputs for all of your button and LED needs. 13 | ## PCB Layout 14 | ![XCopy Board Image](https://github.com/AdamKeher/Pico-Audio/blob/master/files/board.png) 15 | ![XCopy Board Image](https://github.com/AdamKeher/Pico-Audio/blob/master/files/route.png) 16 | ## Features 17 | The software and hardware used in this project have been made possible by the principle of open hardware and software. Many of the samples have been collected together from a variety of authors and modified to work out of the box with the picoAUDIO for instructional purposes. Please consult each sample project for relevant license and credit. 18 | ## Features 19 | * TinyPICO Compatible 20 | * Simply plug your TinyPICO board into the picoAUDIO and your ready to go 21 | * Audio Out 22 | * Dedicated Texas Instruments headphone amplifier for distortion free audio. 23 | * 3.5mm headphone jack. Plug in headphones or line out to an external device. 24 | * Stereo screw clamp audio terminals. The speaker terminals automatically mute when the 3.5mm jack is used. 25 | * Built-in MicroSD Card 26 | * Quality Molex mechanism 27 | * Simple SPI interface 28 | * Activity LED light 29 | * Push-Push socket with overhanging edge mounted card for easy insertion 30 | * UDA1334A Stereo DAC 31 | * Low power audio DAC 32 | * Integrated digital filter and switchable digital de-emphasis for 44.1 kHz frequency 33 | * Supports samples from 16 to 100 kHz 34 | * Simple I2S interface 35 | * 16/20/24 bit audio 36 | * High linearity, wide dynamic range and low distortion 37 | * MAX98306 Stereo Amplifier 38 | * Low power efficient operation 39 | * 3.7W @ 3Ohm, 10% THD / 1.7W at 8Ohm, 10% THD 40 | * Spread Spectrum Modulation 41 | * Five selectable gain levels 42 | * Excellent click and pop suppression 43 | * TPA6132A2 Headphone Amplifier 44 | * 25mW Headphone Amplifier for 16/32Ω Headphones with 3.5mm Audio Jack 45 | * Unlike most audioboards, the picoAUDIO features a dedicated headphone amplifer 46 | * Doesn't use caps to drive headphone audio, reducing unwanted noise and distortion 47 | * Click and pop supression 48 | * Low power amplifier @ 2.1mA typical supply current 49 | * Four selectable gain levels 50 | * SPH0645LM4H MEMS Microphone 51 | * Low power design 52 | * Simple I2S interface 53 | * Flat frequency response 54 | * 24 bit, 44.1kHz audio 55 | * High SNR of 65dB(A) 56 | * RF shielded 57 | * Omnidirectional 58 | * PCF8574 GPIO Extender 59 | * Low standby current 60 | * I2C programmable 61 | * Latched outputs with enough current to drive LEDs 62 | * 8 Input and Output ports wired to a header with 3 outputs also pre wired to onboard buttons. 63 | ## Sample Projects Modified for picoAUDIO 64 | * Stream net radio stations with MP3 support 65 | * I2C 2x16 character LCD and ILI93411 320x240 TFT display samples provided 66 | * Play audio from SD card with MP3 support 67 | * Record audio to SD card 68 | * Realtime full duplex audio. Vocoder example receives from mic and playback from DAC. --------------------------------------------------------------------------------