From a75f422be73621b98d636c5e2871524093b30d6f Mon Sep 17 00:00:00 2001
From: Alan <60433566+alanesq@users.noreply.github.com>
Date: Sat, 12 Mar 2022 08:44:48 +0000
Subject: [PATCH] Update README.md
---
README.md | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/README.md b/README.md
index ca8c9bc..bbb48cb 100644
--- a/README.md
+++ b/README.md
@@ -99,13 +99,13 @@ URLs:
GPIO PINS:
13 free (used by sd card but free if using 1 bit mode)
12 free (must be low at boot, used by sd card but free if using 1 bit mode)
-
14 used by sd card (useable is SPI clock?)
-
2 used by sd card (useabke as SPI MISO?)
-
15 used by sd card (might be usable as SPI CS??)
+
14 used by sd card (usable is SPI clock?)
+
2 used by sd card (usable as SPI MISO?)
+
15 used by sd card as CS
1 serial - output only?
3 serial - input only?
4 has the illumination/flash led on it - led could be removed and use as output?
-
33 onboard led - possibly remove led and use as gpio?
+
33 onboard led - use as output?
Some great info here: https://github.com/raphaelbs/esp32-cam-ai-thinker/blob/master/docs/esp32cam-pin-notes.md
BTW-You can use an MCP23017 io expander chip on pins 12 and 13 to give you 16 general purpose gpio pins, this requires the adafruit MCP23017 library to be installed.