I'm having trouble connecting an RC522 rfid reader to my esp32 module. I have the esp32-Lora module from Heltec with the built-in Oled and lora functionality. Here is the pin diagram for this module: Heltec_WIFI-LoRa-32_DiagramPinoutFromTop.jpg And here is the diagram for the Rc52...
I stumbeled upon the same problem while experimenting. I got a ESP32 38-pin where I got this st7889 display working. Now I want to have it working on the ESP32C3 as well. I tried your suggestions but I can't get it to work (yet). ...
An electrically operated switch like arelayis used to turn ON/OFF a load by allowing the flow of current throughout it. This relay is simply controlled by low voltage (5V) which is generated by the pins of Arduino So, a relay module controlling with theArduino boardis very simple. Usually...
sdspi_device_config_t slot_config = SDSPI_DEVICE_CONFIG_DEFAULT(); slot_config.gpio_cs = (gpio_num_t) cs_gpio; slot_config.host_id = host.slot; esp_err_t err = esp_vfs_fat_sdspi_mount(sdcard_mount_point, &host, &slot_config, &mount_config, &m_card); sdcard_mount_finish(...
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