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readme update

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pull/3/head
davor 7 years ago
parent 8cafcc2ecf
commit 62585a80c2
1 changed files with 3 additions and 0 deletions
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README.md
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@ -136,6 +136,9 @@ Test the prototype.
will prevent ESP32 from booting will prevent ESP32 from booting
[ ] ESP-32: won't boot when SD connected. Don't solder it at PCB v1.7 [ ] ESP-32: won't boot when SD connected. Don't solder it at PCB v1.7
it should be routed differently in newer release 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 [x] I2C resistors increased 470->2.2k
[ ] GPDI series C=100nF to each differential line. [ ] GPDI series C=100nF to each differential line.
[x] reliable shutdown (D11=RED LED, R4=4.7k) [x] reliable shutdown (D11=RED LED, R4=4.7k)

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