Merge pull request #4 from siy/master

Added Mini48 design

6 files changed, 49 insertions, 3 deletions

diff --git a/README b/README
index aea7bea..3aacb07 100644
--- a/README
+++ b/README
@@ -20,4 +20,7 @@ Subdirs:
 	Mini64 - STM32 development board for OpenSTM32
 		 Features:
 		 - Small (52x38.4mm) breadboard compatible design.
-		 - Support for STM32F103/F2xx/F4xx in 64-pin packages.
\ No newline at end of file
+		 - Support for STM32F103/F2xx/F4xx in 64-pin packages.
+
+	Mini48 - Reworked version of Maple Mini suitable for DIY PCB production
+		and on-board RTC crystal.
\ No newline at end of file
diff --git a/mini48/README b/mini48/README
new file mode 100644
index 0000000..ddb3322
--- /dev/null
+++ b/mini48/README
@@ -0,0 +1,39 @@
+Mini48 is a STM32 development board for OpenSTM32 project (https://github.com/gbulmer/openstm32).
+This design is significantly modified Maple Mini R2 with some changes in schematic (no separate
+analog ground, added RTC crystal) and completely new PCB (single layer, 0.7" row header spacing).
+
+Copyright (C) LeafLabs (sorry, don't know exact years) 
+Changes Copyright (C) 2012 Sergiy Yevtushenko.
+
+Just like original design, modified version is distributed under terms and conditions
+of Creative Commons Attribution-ShareAlike license 
+(see http://creativecommons.org/licenses/by-sa/3.0/legalcode for details).
+
+Features:
+- Small (51.4x21.2mm) breadboard compatible design.
+- Compatible with Maple Mini, although ADC noise chaacteristics might be worse
+- RTC crystal on board
+
+The design files were created in Eagle 5.11. Pictures of board can be found at 
+https://picasaweb.google.com/101499174242780444159/Mini48.
+
+At present design is single sided and suitable for DIY PCB production, although the requirements
+to the production process is quite high - board uses 0.15/0.15mm traces/spaces and designed with
+presence of solder mask in mind. The design is optimized for dry film negative photoresist process. 
+Design files as-is are ready to use for ordering boards at some PCB production service.
+Although they can be used for DIY production too, it might be useful to do following changes 
+in the design files before creating photomask:
+
+- Increase width of the dimension rectangle to 0.2mm and include it into top layer and 
+  solder mask photomasks.
+- Change width of default net class tracks to 0.17mm.
+- Change width of vcc net class tracks except GND polygon to 0.32mm. 
+- Change width of GND polygon wire to 0.1mm
+
+NOTE: After these changes board will not pass DRC! If you plan make further modifications in the 
+PCB changed as described above, change DRC rules accordingly.
+
+Comments and suggestions are welcome.
+
+Regards,
+    Sergiy Yevtushenko <Sergiy.Yevtushenko@gmail.com>
diff --git a/mini48/mini48-v0.3-schematic.pdf b/mini48/mini48-v0.3-schematic.pdf
new file mode 100644
index 0000000..b2b1865
--- /dev/null
+++ b/mini48/mini48-v0.3-schematic.pdf
diff --git a/mini48/mini48-v0.3.brd b/mini48/mini48-v0.3.brd
new file mode 100644
index 0000000..6826aa6
--- /dev/null
+++ b/mini48/mini48-v0.3.brd
diff --git a/mini48/mini48-v0.3.sch b/mini48/mini48-v0.3.sch
new file mode 100644
index 0000000..f302aca
--- /dev/null
+++ b/mini48/mini48-v0.3.sch
diff --git a/mini64/README b/mini64/README
index ee5dc05..6f71f48 100644
--- a/mini64/README
+++ b/mini64/README
@@ -1,4 +1,7 @@
 Mini64 is a STM32 development board for OpenSTM32 project (https://github.com/gbulmer/openstm32).
+The design is Copyright (C) 2011-2012 Sergiy Yevtushenko and is distributed under terms and conditions
+of Creative Commons Attribution-ShareAlike license (see http://creativecommons.org/licenses/by-sa/3.0/legalcode
+for details).
 
 Features:
 - Small (52x38.4mm) breadboard compatible design.
@@ -12,13 +15,14 @@ Features:
 - One user button connected as in Maple board
 - Two user LEDs, one connected as in Maple board and one connected as in Maple Mini board
 
-The design files were created in Eagle 5.11.
+The design files were created in Eagle 5.11. Pictures of board can be found at 
+https://picasaweb.google.com/101499174242780444159/Mini64.
 
 At present design is single sided and suitable for DIY PCB production, although the requirements
 to the production process is quite high - board uses 0.15/0.15mm traces/spaces and designed with
 presence of solder mask in mind. The design is optimized for dry film negative photoresist process. 
 Design files as-is are ready to use for ordering boards at some PCB production service.
-Although they can be used For DIY production too, it might be useful to do following changes 
+Although they can be used for DIY production too, it might be useful to do following changes 
 in the design files before creating photomask:
 
 - Increase width of the dimension rectangle to 0.2mm and include it into top layer and