From c4bff25cbff4f2933ca5ccea2f7b57cad2804bb3 Mon Sep 17 00:00:00 2001
From: Alexandre B <alexandre.bobkov@gmail.com>
Date: Sat, 6 Jul 2024 22:50:39 -0400
Subject: [PATCH] .

---
 README.md | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index bacd01b4..4795de35 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ Eco-system of ESP32s Nodes and ATtiny85 peripherals with different functionaliti
 
 <p><i>ESP32-Node Features:</i></p>
 
-- ESP32-WROOM-32D Module
+- ESP32-WROOM-32D Module [^1]
 - Direct connections to all GPIOs
 - Miniature in size, only 35.7mm x 35.7mm
 - Built-in 3V3 voltage regulator and reversed voltage protection
@@ -40,4 +40,6 @@ Eco-system of ESP32s Nodes and ATtiny85 peripherals with different functionaliti
 | `33` | `GPIO21` | `SDA` |
 | `34` `35` | `GPIO03` `GPIO01` | UART0_RXD UART0_TXD |
 | `36` | `GPIO22` | `SCL` |
-| `37` | `GPIO23` | VSPI_MOSI | 
\ No newline at end of file
+| `37` | `GPIO23` | VSPI_MOSI | 
+
+[^1]: https://www.espressif.com/sites/default/files/documentation/esp32_datasheet_en.pdf
\ No newline at end of file