Hopefully final changes

README.md

@@ -1,22 +1,30 @@
-# NixiESP
+# NixiESP12
+
+## Intro
 
 Yet another Nixie clock project!
 
 Some highlights:
 
 * K155ID1 driven IN-12A or IN-12B tubes for hour, minute, seconds
-* BS107 driven IN-6 or similar for separation
-* ESP8266 for time synchronization and web interface
-* LM1117 (3.3V regulator) for logic power supply
-* No tube step up converter on-board, pin headers for connecting third party power supply 
+* BS107 driven IN-6 or similar for digit separation
+* 74HC595 for serial to parallel conversion
+* ESP8266 for time synchronization
+* LM1117-3.3V and LM1117-5V regulators for logic power supply
+* No tube step up converter on-board, pin headers for connecting
+  <a href="http://www.ebay.com/itm/DC-5V-12V-to-170V-DC-High-Voltage-NIXIE-Power-Supply-Module-PSU-NIXIE-TUBE-ERA-/322511957768?hash=item4b1735ef08">third party power supply</a>
 * KiCad design with 3D models from http://miniwatt.info
 
 Some KiCad screenshots:
 
 <img src="nixiesp.png"/>
 
+Photos:
 
-##Install
+<img src="photo.jpg"/>
+
+
+## Install
 
 Boot ESP8266 with program pin held low and flash MicroPython:
 
@@ -26,3 +34,15 @@ esptool.py --port /dev/ttyUSB0 --baud 460800 write_flash --flash_size=detect 0 e
 ```
 
 Upload main.py and boot.py and adjust network configuration in boot.py accordingly.
+
+## Assembly tips
+
+Some cheap 1117V regulators don't offer short circuit protection
+and once blown pass through input voltage,
+make sure you get ones with protection otherwise you can fry ESP8266
+or serial-to-parallel chips.
+
+Once the PCB is milled or etched make sure you clean the 180V rails thoroughly,
+that voltage is high enough to cross gaps of 0.1mm.
+Once that happens it burns a thick dark trace into the fiberglass of PCB and
+it's pretty tricky to clean up.