![A breakdown of my experience trying to talk to an SD card REALLY fast with the ESP32 using SDMMC : r/esp32 A breakdown of my experience trying to talk to an SD card REALLY fast with the ESP32 using SDMMC : r/esp32](https://preview.redd.it/fbr9bczzctn31.png?width=452&format=png&auto=webp&s=ac7ae9bc18235c7f805bb47571163f7cb8e15ece)
A breakdown of my experience trying to talk to an SD card REALLY fast with the ESP32 using SDMMC : r/esp32
![f_mount error (3) when not setting internal pullups on SPI pins · Issue #2 · kiwih/cubeide-sd-card · GitHub f_mount error (3) when not setting internal pullups on SPI pins · Issue #2 · kiwih/cubeide-sd-card · GitHub](https://user-images.githubusercontent.com/3051451/113846740-1437f700-9797-11eb-8f7e-030c5ed8222f.jpg)
f_mount error (3) when not setting internal pullups on SPI pins · Issue #2 · kiwih/cubeide-sd-card · GitHub
![AM3358: Device tree file enables some pull-ups (or pull-downs) on pins that already has external pull-ups connected to them - Processors forum - Processors - TI E2E support forums AM3358: Device tree file enables some pull-ups (or pull-downs) on pins that already has external pull-ups connected to them - Processors forum - Processors - TI E2E support forums](https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/791/pu3.png)
AM3358: Device tree file enables some pull-ups (or pull-downs) on pins that already has external pull-ups connected to them - Processors forum - Processors - TI E2E support forums
![microcontroller - SD card socket just need to wire with pull-up resistors? - Electrical Engineering Stack Exchange microcontroller - SD card socket just need to wire with pull-up resistors? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/SAbtp.png)