readme update

7 years ago · 62585a80c2
parent 8cafcc2ecf
commit 62585a80c2
1 changed files with 3 additions and 0 deletions
--- a/README.md
+++ b/README.md
@ -136,6 +136,9 @@ Test the prototype.
        will prevent ESP32 from booting
    [ ] ESP-32: won't boot when SD connected. Don't solder it at PCB v1.7
        it should be routed differently in newer release
+        Here is a possible SD card connection
+        Arduino->Examples->ESP32->SD_MMC_Test
+        https://github.com/espressif/esp-idf/blob/master/examples/storage/sd_card/README.md
    [x] I2C resistors increased 470->2.2k
    [ ] GPDI series C=100nF to each differential line.
    [x] reliable shutdown (D11=RED LED, R4=4.7k)