diff --git a/sphinx/source/Ohmpi_V2_00/V2_00_step_03.rst b/sphinx/source/Ohmpi_V2_00/V2_00_step_03.rst
index 737b63ef676a09ab0ca0ae5692d5eb612a371bf8..e329c49cfb9eedd238c578b6ed935b17c4757231 100644
--- a/sphinx/source/Ohmpi_V2_00/V2_00_step_03.rst
+++ b/sphinx/source/Ohmpi_V2_00/V2_00_step_03.rst
@@ -1,248 +1,4 @@
-
-**STEP n°3**: MUX board
-****************************************************
-The multiplexing of the channels is a mechanical multiplexing based on OMRON's manufacturing relays (G5LE-1-VD 12 VDC). Each relay is combined with
-a ZVN4206A power MOFSET. The raspberry has only 30 GPIOs, which is not enough to activate all the 64 electrodes, which represent 512 GPIOs.
-We used gpio expender I2C (MCP23017). We have associated these components with an I2C muliplexer of type type TCA9548A from adafruit.
-This combination allows to go up to 512 GPIOs and up to 128 electrodes. Each card has its own digital address between 0X70 and 0X77.
-In the following presentation for an Ohmpi 64 electrodes, we will use the addresses 0X70 for channel A, 0X71 for channel B, 0X72 for channel M and 0X73 for channel N.
-0X73 for the N channel. 4 MUX board will be needed to multiplex an Ohmpi 64 electrodes.
-
-**PART A** Assembly of MUX board
-======================================================
-
-
-Required components
-----------------------------------------------------
-
-.. figure:: step_n_3/a/MUX_board_componement.jpg
- :width: 600px
- :align: center
- :height: 650px
- :alt: alternate text
- :figclass: align-center
-
-
-.. csv-table:: List of components
- :file: step_n_3/a/MUX_board_list_2_xx.csv
- :widths: 30, 70, 70, 70, 70, 35, 35
- :header-rows: 1
-
-
-.. table::
- :align: center
-
- +--------+------------------------------------------------------------+
- | | .. image:: step_n_3/a/MUX_00.jpg |
- | 1 +------------------------------------------------------------+
- | |Mux board pcb |
- | | |
- +--------+------------------------------------------------------------+
-
-.. table::
- :align: center
-
- +--------+------------------------------------------------------------+
- | | .. image:: step_n_3/a/MUX_01.jpg |
- | 2 +------------------------------------------------------------+
- | |Installation of the 150 Kohm resistors |
- | | |
- +--------+------------------------------------------------------------+
-
-.. table::
- :align: center
-
- +--------+------------------------------------------------------------+
- | | .. image:: step_n_3/a/MUX_02.jpg |
- | 3 +------------------------------------------------------------+
- | |Installation of the mosfet ZVN4206A |
- | | |
- +--------+------------------------------------------------------------+
-
-
-.. table::
- :align: center
-
- +--------+------------------------------------------------------------+
- | | .. image:: step_n_3/a/MUX_03.jpg |
- | 4 +------------------------------------------------------------+
- | |Installation of the diode-1n4007 |
- | | |
- +--------+------------------------------------------------------------+
-
-.. table::
- :align: center
-
- +--------+------------------------------------------------------------+
- | | .. image:: step_n_3/a/MUX_04.jpg |
- | 5 +------------------------------------------------------------+
- | |Installation of the relay |
- | | |
- +--------+------------------------------------------------------------+
-
-.. table::
- :align: center
-
- +--------+------------------------------------------------------------+
- | | .. image:: step_n_3/a/MUX_05.jpg |
- | 6 +------------------------------------------------------------+
- | |Instalation of the terminal screw |
- | | |
- +--------+------------------------------------------------------------+
-
-.. table::
- :align: center
-
- +--------+------------------------------------------------------------+
- | | .. image:: step_n_3/a/MUX_06.jpg |
- | 7 +------------------------------------------------------------+
- | |Installation of generic male header |
- | | |
- +--------+------------------------------------------------------------+
-
-.. table::
- :align: center
-
- +--------+------------------------------------------------------------+
- | | .. image:: step_n_3/a/MUX_07.jpg |
- | 8 +------------------------------------------------------------+
- | |Installation of Pin strip (6 pins) and pin strip (16 pins) |
- | | |
- +--------+------------------------------------------------------------+
-
-.. table::
- :align: center
-
- +--------+------------------------------------------------------------+
- | | .. image:: step_n_3/a/MUX_08.jpg |
- | 9 +------------------------------------------------------------+
- | |Installation of DIP Dual In Line Socket 2*14 |
- | | |
- +--------+------------------------------------------------------------+
-
-.. table::
- :align: center
-
- +--------+------------------------------------------------------------+
- | | .. image:: step_n_3/a/MUX_09.jpg |
- | 10 +------------------------------------------------------------+
- | |Installation of Adafruit TCA9548A |
- | | |
- +--------+------------------------------------------------------------+
-
-.. table::
- :align: center
-
- +--------+------------------------------------------------------------+
- | | .. image:: step_n_3/a/MUX_10.jpg |
- | 10 +------------------------------------------------------------+
- | |Installation of MCP23017 |
- | | |
- +--------+------------------------------------------------------------+
-
-.. note::
- This step must be duplicated 4 times for every Mux card.
-
-
-**PART B** MUX board address
-======================================================
-To build an ohmpi it is necessary to have 4 MUX boards, with 4 different addresses. It is therefore necessary to identify each board, by assigning an address, which will be allocated in the Ohmpi code.
-We present here the addresses selected by default.
-
-For the A electrode board, we suggest addressing it with address 0x70:
-
-.. table::
- :align: center
-
- +--------+------------------------------------------------------------+
- | | .. image:: step_n_3/b/A_0x70.jpg |
- | 1 +------------------------------------------------------------+
- | |Mount the jumpers and note the value of the address and the |
- | |electrode name on the mux board (A). |
- | +------------------------------------------------------------+
- | | .. image:: step_n_3/b/A_0x70-a.jpg |
- | +------------------------------------------------------------+
- | |Zoom on the jumper |
- | | |
- +--------+------------------------------------------------------------+
-
-
-
-
-For the B electrode board, we suggest addressing it with address 0x71:
-
-.. table::
- :align: center
-
- +--------+------------------------------------------------------------+
- | | .. image:: step_n_3/b/B_0x71.jpg |
- | 2 +------------------------------------------------------------+
- | |Mount the jumpers and note the value of the address and the |
- | |electrode name on the mux board (B). |
- | +------------------------------------------------------------+
- | | .. image:: step_n_3/b/B_0x71-a.jpg |
- | +------------------------------------------------------------+
- | |Zoom on the jumper |
- | | |
- +--------+------------------------------------------------------------+
-
-For the N electrode board, we suggest addressing it with address 0x72:
-
-.. table::
- :align: center
-
- +--------+------------------------------------------------------------+
- | | .. image:: step_n_3/b/M_0x72.jpg |
- | 3 +------------------------------------------------------------+
- | |Mount the jumpers and note the value of the address and the |
- | |electrode name on the mux board (B). |
- | +------------------------------------------------------------+
- | | .. image:: step_n_3/b/M_0x72-a.jpg |
- | +------------------------------------------------------------+
- | |Zoom on the jumper |
- | | |
- +--------+------------------------------------------------------------+
-
-For the M electrode board, we suggest addressing it with address 0x73:
-
-.. table::
- :align: center
-
- +--------+------------------------------------------------------------+
- | | .. image:: step_n_3/b/N_0x73.jpg |
- | 4 +------------------------------------------------------------+
- | |Mount the jumpers and note the value of the address and the |
- | |electrode name on the mux board (B). |
- | +------------------------------------------------------------+
- | | .. image:: step_n_3/b/N_0x73-a.jpg |
- | +------------------------------------------------------------+
- | |Zoom on the jumper |
- | | |
- +--------+------------------------------------------------------------+
-
-**PART C** Validation of MUX board
-======================================================
-The first step is to test the Mux boards before assembling them definitively.
-To test the Mux boards, it will be necessary first to make a simplified assembly of the Mux board and the measurement board.
-
-The first thing to do is to prepare a 50 cm long flat wire with two 6-poles connectors.
-
-
- +--------+------------------------------------------------------------+
- | | .. image:: step_n_3/c/20211206_172252.jpg |
- | 1 +------------------------------------------------------------+
- | |Build a cable with 6 contacts with 6 pins connector. |
- | | |
- +--------+------------------------------------------------------------+
-
- +--------+------------------------------------------------------------+
- | | .. image:: step_n_3/c/20220124_142929.jpg |
- | 2 +------------------------------------------------------------+
- | |Prepare the measurement board and the first mux board by |
- | |example the card with address 0x71. |
- +--------+------------------------------------------------------------+
-
- +--------+------------------------------------------------------------+
+*/µ£ù^!+
| | .. image:: step_n_3/c/20220124_143105.jpg |
| 3 +------------------------------------------------------------+
| |Connect the cables for the 12V power supply to the MUX board|
@@ -265,10 +21,26 @@ The first thing to do is to prepare a 50 cm long flat wire with two 6-poles conn
+--------+------------------------------------------------------------+
-Start your 12V power supply, the raspberry must start. You can now open the script called test_mux_board.py
+Start your 12V power supply, the raspberry must start.
-
+Run the terminal and write:
+
+ .. code-block:: python
+
+ i2cdetect -y 1
+
+Three addresses should appear, including the address of the MUX board you have selected. This implies that your board has been detected.
+Open the script called "test_mux_board.py".
+
+Run the script
+
+ +--------+------------------------------------------------------------+
+ | | .. image:: step_n_3/c/thonny_mux_test_01.jpg |
+ | 6 +------------------------------------------------------------+
+ | |choose to run option 2 to run all channels |
+ | | |
+ +--------+------------------------------------------------------------+
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