DL-20 Flashing Jumpers

Zigbee.md

@@ -51,7 +51,7 @@ For ESP devices that do not have a microUSB connector, make the following connec
 
 <BR>ESP<BR>Device|Serial<BR>Programming<BR>Adapter
 :--:|:--:
-3.3V|3.3V
+Vcc|Vcc
 GND|GND
 GPIO0|GND
 GPIO1|Rx
@@ -66,11 +66,25 @@ For the flashing process, you need the following connections:
 
 ESP<BR>Device|<BR>CC2530
 :--:|:--:
-3.3V|3.3V
-GND|GND
 GPIO4|CC_DC<BR>(A.K.A. P2_2 or Debug Clock)
 GPIO5|CC_RST
 GPIO12|CC_DD<BR>(A.K.A. P2_1 or Debug Data)
+Vcc|Vcc
+GND|GND
+
+**DL-20 Flashing Jumpers**  
+The DL-20 Zigbee module has a 5-pin 1.27mm pitch unpopulated header with 0.6mm througholes.  
+
+Location|CC2530 Pin
+:--:|:--:
+1|DD (Debug Data)
+2|DC (Debug Clock)
+3|Vcc (3.3V)
+4|RST
+5|GND
+
+Insert alternating male Dupont jumpers; one jumper on one side, the next one on other side. This  allows the pins to provide the friction themselves to maintain contact and remain firmly in place. You only need DD, DC, and RST (a fourth jumper is shown which is used to keep the RST jumper in place). Vcc and GND are available on the main serial interface pins.  
+<img src="https://user-images.githubusercontent.com/34340210/66960536-a47dfb80-f03a-11e9-9c24-9b3bc4676e49.jpg" width="360">  
 
 **Prototype**  
 <img src="https://user-images.githubusercontent.com/34340210/65651836-aa556380-dfdd-11e9-8788-549d0f427403.jpg" width="360">