diff --git a/Grbl_Esp32-master/Grbl_Esp32/config.h b/Grbl_Esp32-master/Grbl_Esp32/config.h
index 57bee12..0875eb8 100644
--- a/Grbl_Esp32-master/Grbl_Esp32/config.h
+++ b/Grbl_Esp32-master/Grbl_Esp32/config.h
@@ -4,9 +4,9 @@
 
   Copyright (c) 2012-2016 Sungeun K. Jeon for Gnea Research LLC
   Copyright (c) 2009-2011 Simen Svale Skogsrud
-	
-	2018 -	Bart Dring This file was modifed for use on the ESP32
-					CPU. Do not use this with Grbl for atMega328P
+  
+  2018 -  Bart Dring This file was modifed for use on the ESP32
+          CPU. Do not use this with Grbl for atMega328P
 
   Grbl is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -46,8 +46,8 @@ Some features should not be changed. See notes below.
 // NOTE: OEMs can avoid the need to maintain/update the defaults.h and cpu_map.h files and use only
 // one configuration file by placing their specific defaults and pin map at the bottom of this file.
 // If doing so, simply comment out these two defines and see instructions below.
-#define CPU_MAP_TEST_DRIVE // these are defined in cpu_map.h
-#define VERBOSE_HELP // adds addition help info, but could confuse some senders
+#define CPU_MAP_ESP32 // these are defined in cpu_map.h
+//#define VERBOSE_HELP // adds addition help info, but could confuse some senders
 
 
 // Serial baud rate
@@ -168,7 +168,7 @@ Some features should not be changed. See notes below.
 // will not be affected by pin sharing.
 
 // NOTE: Defaults are set for a traditional 3-axis CNC machine. Z-axis first to clear, followed by X & Y.  
-#define HOMING_CYCLE_0 (1<<Z_AXIS)	// TYPICALLY REQUIRED: First move Z to clear workspace.
+#define HOMING_CYCLE_0 (1<<Z_AXIS)  // TYPICALLY REQUIRED: First move Z to clear workspace.
 #define HOMING_CYCLE_1 (1<<X_AXIS)  
 #define HOMING_CYCLE_2 (1<<Y_AXIS)
 
@@ -267,7 +267,7 @@ Some features should not be changed. See notes below.
 // #define USE_PEN_SERVO    // this method will be deprecated soon
 // #define USE_SERVO_AXES  // the new method
 // define your servo pin here or in cpu_map.h
-//#define SERVO_PEN_PIN 					GPIO_NUM_27
+//#define SERVO_PEN_PIN           GPIO_NUM_27
 
 // Enable using a solenoid for the Z axis on a pen type machine
 // #define USE_PEN_SOLENOID
@@ -536,8 +536,8 @@ Some features should not be changed. See notes below.
 // 115200 baud will take 5 msec to transmit a typical 55 character report. Worst case reports are
 // around 90-100 characters. As long as the serial TX buffer doesn't get continually maxed, Grbl
 // will continue operating efficiently. Size the TX buffer around the size of a worst-case report.
- #define RX_BUFFER_SIZE 254 // (1-254) Uncomment to override defaults in serial.h
- #define TX_BUFFER_SIZE 128 // (1-254)
+// #define RX_BUFFER_SIZE 254 // (1-254) Uncomment to override defaults in serial.h
+ #define TX_BUFFER_SIZE 100 // (1-254)
 
 // A simple software debouncing feature for hard limit switches. When enabled, the limit 
 // switch interrupt unblock a waiting task which will recheck the limit switch pins after 
diff --git a/Ressource/README.md b/Ressource/README.md
index 6d95abb..43a7b5e 100644
--- a/Ressource/README.md
+++ b/Ressource/README.md
@@ -71,12 +71,14 @@ $J=G91 G21 F1000 X-10
 ### CONFIG GRBL_ESP32 CRA4:
 
 - Augmenter le temps de démarrage de la spindle à 3-4sec
-- Activer la carte sd OK
-- Ne pas ignorer les pin de contrôle qui sur un esp seul n'ont pas de pullup et pose problème contrairement à ici. Cycle Start | Feed Hold | Reset | Safety Door OK
-- Inverser la logique de commande de la spindle. 3.3vHIGH = off 0vLOW = on OK
+- Activer la carte sd
+- Selectionner la bonne cpu, c'est une demo par default
+- Ne pas ignorer les pin de contrôle qui sur un esp seul n'ont pas de pullup et pose problème contrairement à ici. Cycle Start | Feed Hold | Reset | Safety Door
+- Inverser la logique de commande de la spindle. 3.3vHIGH = off 0vLOW = on
 - Possibilité de desactivé la pwm sur la spindle qui n'est ici pas utilisé
-- Augmenter le BLOCK_BUFFER_SIZE et RX_BUFFER_SIZE OK
-- Comme les capas de filtrages et les résistances de pullup suffisent pas activer ENABLE_SOFTWARE_DEBOUNCE (faudrait des optos coupleurs normalement et des endstop en >12v au lieu de 3.3v) OK
+- Augmenter le BLOCK_BUFFER_SIZE et les autres buffer si possible
+- Comme les capas de filtrages et les résistances de pullup suffisent pas activer ENABLE_SOFTWARE_DEBOUNCE (faudrait des optos coupleurs normalement et des endstop en >12v au lieu de 3.3v)
+- Ne pas hésiter à utiliser le bouton boot de l'esp32 pendant l'upload pour lui permettre de passer en mode "attente de programme"
 
 ### PINOUT GRBL_ESP32 CRA4 (v3.5)