Hi rudi, no unfortunately no luck... However, I bought a TTGO T8 V1.7.1 board, and it has 4MB PSRAM (ESP-PSRAM64H chip) on the board. And yes, it works! I (240) psram: This chip is ESP32-D0WD I (240) psram: spiconfig: 0 I (240) psram: spiconfig: DEFAULT_SPI I (243) psram: flash_clk_io: 6 I (246) psr...

Hi rudi, Ingo, i read from your pics this wiring, can you check, did you like the comments on your pic? Yes the comments on the pic are correct, and they match the wiring on your schematic, except the shared CLK line. I did try to use a separate CLK line for PSRAM (IO9 - see my last comment in the i...

FYI, this is how I mounted the PSRAM to the PICO Kit:

Hi rudy, Which IDF Version you use? I use pretty much latest from master (i.e. last commit was from Jan 5, 2021). The code looks like it is supporting PSRAM for the PICO KIT, as far as I can tell. The code changed a lot since they initially added support for PSRAM, now the pin assignments are read f...

thanks for updating revised_v1.0_31.08.2017.png ESP32-PICO-D4 datasheet V1.0 from 31. August 2017 esp32-pico-d4_datasheet_en_V1.0_vom_31.08.2017.pdf src now online again best wishes rudi ;-) Hi, rudi, I must say you did a great job here. So, an External PSRAM work with these two chips. - D2WD - PIC...

I have also made a new PCB in the meantime. This time actually 2 totally separate PCBs, one for the digital part, and one for the audio part. The digital part also now has much more capacitors for both, the 5V and the 3.3V line very close to the Pico Kit pins. Both PCBs only share the ground at one ...

I see exactly the same thing. I not only see it when WiFi is turned on, but also when Bluetooth (classic) is turned on. I have a ESP32 Pico Kit mounted on a self made PCB that uses the VS1053b break out board to decode MP3 and other audio formats. My PCB also contains a stereo amplifier to drive the...