diff --git a/README.md b/README.md
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+++ b/README.md
@@ -1,6 +1,8 @@
 # ssis:bit
 AIO solution for SSIS students
 
+![T8 running CircuitPython](docs/ssis.bit_2022-01-06.jpg)
+
 ## Hardware
 
 CircuitPython supports [more than 200 different boards](https://circuitpython.org/downloads). Locally available is the [TTGO T8 ESP32-S2 ST7789](https://circuitpython.org/board/lilygo_ttgo_t8_s2_st7789/) at several online stores. The board includes the powerful 240MHz CPU, 4MB Flash and 8MB PSRAM, a 1.14" ST7789 display, a microSD card slot for virtually unlimited local data storage, battery connector 1.25mm JST with charge controller and regular USB-C connector. And buildin WiFi, of course.
diff --git a/docs/T8-pinmap.jpg b/docs/T8-pinmap.jpg
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diff --git a/docs/history.md b/docs/history.md
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--- a/docs/history.md
+++ b/docs/history.md
@@ -1,4 +1,5 @@
 # ssis:bit
+
 AIO solution for SSIS students
 
 ## Hardware
@@ -44,6 +45,8 @@ Please update.
 
 Start of development of the ssis:bit project based on CircuitPython and the T8 ST7789 from Lilygo.
 
+![T8 running CircuitPython](ssis.bit_2022-01-06.jpg)
+
 ## 2020
 
 The idea is born with a T-Display. But to control the display you need a fast ST7789 library, needs to be integrated into the binary of MicroPython. Feasable, but still not easy enouth for students.
@@ -58,7 +61,7 @@ ASA Arduino club at AIS.
 
 ## 2017
 
-Visit to SSIS for the [VTC 2017]() Vietnam Tech Conference. Students presented their Arduino projects on Friday.
+Visit to SSIS for the [VTC 2017](https://2017.vietnamtechconference.org/) Vietnam Tech Conference. Students presented their Arduino projects on Friday.
 
 ## 2016
 
diff --git a/docs/index.md b/docs/index.md
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--- a/docs/index.md
+++ b/docs/index.md
@@ -1,6 +1,9 @@
 # ssis:bit
+
 AIO microcomputer solution with CircuitPython, display and battery for SSIS students.
 
+![T8 running CircuitPython](ssis.bit_2022-01-06.jpg)
+
 ## Hardware
 
 CircuitPython supports [more than 200 different boards](https://circuitpython.org/downloads). Locally available is the [TTGO T8 ESP32-S2 ST7789](https://circuitpython.org/board/lilygo_ttgo_t8_s2_st7789/) at several online stores. The board includes the powerful 240MHz CPU, 4MB Flash and 8MB PSRAM, a 1.14" ST7789 display, a microSD card slot for virtually unlimited local data storage, battery connector 1.25mm JST with charge controller and regular USB-C connector. And buildin WiFi, of course.
@@ -15,6 +18,80 @@ The planned adapterplate adds a 3-way button for input, place to hold the little
 
 The ssis:bit runs [CircuitPython](https://circuitpython.org/) and can be easily programmed with the [Mu Editor](https://codewith.mu/en/). There is a lot to learn on [Adafruit with CircuitPython]() and with their great libraries there is less frustration getting things started.
 
+## GPIO
+
+This document from LilyGO documents the pins of the T8.
+
+![T8 pinmap](T8-pinmap.jpg)
+
+In CircuitPython the following pins are available"
+
+``` py
+import board
+dir(board)
+['__class__', '__name__', 'BATTERY', 'DISPLAY', 'IO0', 'IO1', 'IO11', 'IO12', 'IO13', 'IO15', 'IO16', 'IO17', 'IO18', 'IO19', 'IO2', 'IO20', 'IO21', 'IO3', 'IO39', 'IO4', 'IO40', 'IO41', 'IO42', 'IO45', 'IO46', 'IO5', 'IO6', 'IO7', 'IO8', 'IO9', 'LCD_BCKL', 'LCD_CLK', 'LCD_CS', 'LCD_D_C', 'LCD_MOSI', 'LCD_RST', 'PE_POWER', 'RX', 'RX1', 'SD_CLK', 'SD_CS', 'SD_MISO', 'SD_MOSI', 'TX', 'TX1', 'board_id']
+```
+
+To find he assigned pins we running
+```
+"""CircuitPython Essentials Pin Map Script"""
+import microcontroller
+import board
+
+board_pins = []
+for pin in dir(microcontroller.pin):
+    if isinstance(getattr(microcontroller.pin, pin), microcontroller.Pin):
+        pins = []
+        for alias in dir(board):
+            if getattr(board, alias) is getattr(microcontroller.pin, pin):
+                pins.append("board.{}".format(alias))
+        if len(pins) > 0:
+            board_pins.append(" ".join(pins))
+for pins in sorted(board_pins):
+    print(pins)
+```
+
+And get
+
+```
+board.BATTERY board.IO9
+board.IO0
+board.IO1
+board.IO11 board.SD_MOSI
+board.IO12 board.SD_CLK
+board.IO13 board.SD_MISO
+board.IO15
+board.IO16
+board.IO17 board.TX1
+board.IO18 board.RX1
+board.IO19
+board.IO2
+board.IO20
+board.IO21
+board.IO3
+board.IO39
+board.IO4
+board.IO40
+board.IO41
+board.IO42
+board.IO45
+board.IO46
+board.IO5
+board.IO6
+board.IO7
+board.IO8
+board.LCD_BCKL
+board.LCD_CLK
+board.LCD_CS
+board.LCD_D_C
+board.LCD_MOSI
+board.LCD_RST
+board.PE_POWER
+board.RX
+board.SD_CS
+board.TX
+```
+
 ## History
 
-More will be updated in the [docs/history](docs/history.md) document, but the idea is from 2020 with the [t-display](https://github.com/kreier/t-display) board. Similar idea: Not just the Microcomputer but included power supply (LiPo), display (just 240x135 color) and input device (not keyboard, but 3 buttons) to have it always with you and ready to use.
+More will be updated in the [docs/history](./history) document, but the idea is from 2020 with the [t-display](https://github.com/kreier/t-display) board. Similar idea: Not just the Microcomputer but included power supply (LiPo), display (just 240x135 color) and input device (not keyboard, but 3 buttons) to have it always with you and ready to use.
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