diff -r 33cd55d481ba -r 6b6e13653348 content/hp34970a_4.rst
--- a/content/hp34970a_4.rst	Wed Oct 16 21:52:38 2019 +0200
+++ b/content/hp34970a_4.rst	Wed Oct 16 21:53:47 2019 +0200
@@ -10,7 +10,7 @@
 
 
 After a summer pause, I'm back on my HP34970A replair project.  In
-`the previous post in this series <{filename}/hp34970a_3.rst>`_, I've
+`the previous post in this series <{static}/hp34970a_3.rst>`_, I've
 started to reverse ingineer the serial protocol between the CPU board
 and the fonrt panel, and implement a prototype of replacement display.
 
@@ -24,7 +24,7 @@
 
 .. _`blue 256x64 OLED display`: http://www.buydisplay.com/default/oled-3-2-inch-displays-module-companies-with-driver-circuit-blue-on-black
 
-.. image:: {filename}/images/hp34970a/oled_module.jpg
+.. image:: {static}/images/hp34970a/oled_module.jpg
    :alt: 3"2 blue OLED module used as a replacement display for the HP34970A.
 
 My first problem was to drive the display from my Nucleo board. I
@@ -71,7 +71,7 @@
 .. _GraphicDisplay: https://developer.mbed.org/teams/GraphicsDisplay/code/UniGraphic/file/tip/Graphics/GraphicsDisplay.h 
 .. _`poorly written sample C code`: http://www.buydisplay.com/download/democode/ER-OLEDM032-1_DemoCode.txt
 
-.. image:: {filename}/images/hp34970a/oled.jpg
+.. image:: {static}/images/hp34970a/oled.jpg
    :alt: The replacement 3"2 blue OLED module for the HP34970A.
 
 
@@ -121,7 +121,7 @@
 I was almost ready to use 2 microcontrollers for the job: one to sniff
 and interpret the serial communication and one to drive the display.
 
-.. image:: {filename}/images/hp34970a/poc_oled.jpg
+.. image:: {static}/images/hp34970a/poc_oled.jpg
    :alt: Improvment of the POC based on the Nucleo F446RE and using a blue OLED module.
 
 Improving the tasks