add pictures and data sheet

orienteering-oss · Mar 30, 2020 · 728c765 · 728c765
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diff --git a/README.md b/README.md
@@ -2,11 +2,19 @@
 
 The EMIT e-card is used for orienteering races, to register control codes and split times. When punching, the e-card registers the unit's code and running time. The e-card can store up to 50 split times. The split times are stored internal in the e-card until restarted on a starting unit.
 
-The ecard is used with an EKT device like this:
+![](./emit-ecard-outside.jpg)
+![](./emit-ecard-inside.jpg)
+![](./emit-ecard-inside-circuit-board.jpg)
+![](./emit-ecard-circuit-board-front.jpg)
+![](./emit-ecard-circuit-board-back.jpg)
+![](./emit-ecard-circuit-board-front2.jpg)
 
+The ecard is used with a control unit like this:
 
-The ecard uses an 2032 batteri, and here is some of the components:
+![](./emit-control-unit.png)
 
-* Texas Instruments HC368 (bottom right of circuit board)
-* 24C02M, which is an E2PROM (bottom left of curcuit board). Couldn't find the exact component, but you can see many similar here: https://www.qdatasheet.com/search.jsp?sWord=24C02M&op=i
-* [MC705J1ACDWE](https://www.newark.com/nxp/mc705j1acdwe/microcontroller-mcu-8-bit-hc05/dp/40K7393?CMP=AFC-SF-FC), a microcontroller (in the middle)
+The ecard uses a 2032 battery, and here is some of the components:
+
+- Texas Instruments [HC368](./sn74hc368.pdf) (bottom right of circuit board)
+- 24C02M, which is an [E2PROM](https://en.wikipedia.org/wiki/EEPROM) (bottom left of curcuit board). Couldn't find the exact component, but you can see many similar here: https://www.qdatasheet.com/search.jsp?sWord=24C02M&op=i
+- [MC705J1ACDWE](https://www.newark.com/nxp/mc705j1acdwe/microcontroller-mcu-8-bit-hc05/dp/40K7393?CMP=AFC-SF-FC), a microcontroller (in the middle)
diff --git a/emit-control-unit.png b/emit-control-unit.png
diff --git a/emit-ecard-circuit-board-back.jpg b/emit-ecard-circuit-board-back.jpg
diff --git a/emit-ecard-circuit-board-front.jpg b/emit-ecard-circuit-board-front.jpg
diff --git a/emit-ecard-circuit-board-front2.jpg b/emit-ecard-circuit-board-front2.jpg
diff --git a/emit-ecard-inside-circuit-board.jpg b/emit-ecard-inside-circuit-board.jpg
diff --git a/emit-ecard-inside.jpg b/emit-ecard-inside.jpg
diff --git a/emit-ecard-outside.jpg b/emit-ecard-outside.jpg
diff --git a/sn74hc368.pdf b/sn74hc368.pdf