Pico I2S/RTC super-HAT

Author	Message
matherp Guru Joined: 11/12/2012 Location: United Kingdom Posts: 9805	Posted: 01:06pm 04 Feb 2025       The boards have arrived and work perfectly. I2S audio and DS3231 RTC on a simple Pico "Hat". Since getting these built I've also added a miniature reset switch but you can omit that on the BOM if not required. NB: the BOM includes simple 20-way headers. I omitted these and used long-pin variants so the boards can be stacked. I can't find a part number for these on JLC/LCSC. As always, omit any parts you prefer to solder yourselves to save cost - Audio jack/battery holder, jumpers etc. The underside of the board specifies the option commands need to configure. The PCM5102A I2S DAC runs off its own linear regulator with extensive decoupling/filtering and audio quality is superb. The boards could be hand soldered but use numerous 0402 parts so pretty tricky. OPTION SYSTEM I2C GP14,GP15 or OPTION SYSTEM I2C GP26,GP25 OPTION AUDIO I2S GP6,GP5 NB: I will be enabling I2S audio on all Pico variants (RP2040 and RP2350) in a future release as it is SO GOOD Schematic 1c207f3e-630a-4dcf-b3ca-276b52e8f31e.pdf Design file PicoI2SRTC.zip Gerbers Gerber_PCB1_2025-02-04.zip BOM and P&P BOM_Board1_PCB1_2025-02-04.zip Edited 2025-02-04 23:16 by matherp