https://nalar.dev/tags/esp32-c6/ Recent content in ESP32-C6 on Nalar Hugo en-us Sat, 19 Sep 2026 00:00:00 +0000 https://nalar.dev/spi-microsd-slot-does-not-make-8-bit-tft-shield-spi-display/ Sat, 19 Sep 2026 00:00:00 +0000 https://nalar.dev/spi-microsd-slot-does-not-make-8-bit-tft-shield-spi-display/ <p>A 2.8-inch Arduino-style TFT shield can place an LCD and a microSD socket on the same PCB while giving them completely different electrical interfaces. The pin labels are the quickest way to tell them apart.</p> <p>On the shield shown here, the LCD side exposes <code>DB0</code> through <code>DB7</code> together with <code>LCD_WR</code>, <code>LCD_RD</code>, <code>LCD_RS</code>, <code>LCD_CS</code>, and <code>LCD_RST</code>. Those are the signals of an 8-bit 8080-style parallel display interface. The labels <code>SD_MOSI</code>, <code>SD_MISO</code>, <code>SD_SCK</code>, and <code>SD_SS</code> belong to the microSD socket.</p>