Differences

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--- vfd_driver [2016/01/28 09:24] – [introduction] kingkevin
+++ vfd_driver [2016/02/01 14:55] – [micro-controller] kingkevin
@@ Line 73: / Line 73: @@
   - DIN: to shift the data in
   - CLK: clock to shift the data, on the clock rise
-  - NLE: enable latch on low
+  - #LE: enable latch on low (aka. negative LE, or NLE)
   - STR: strobe the shifted data
-  - GND: ground
+  - NC: not connected
 {{  :vfd_driver:cn1_jumper.jpg?200|CN1 short}}
@@ Line 195: / Line 195: @@
 | GPIO | PA4 | 6 | NLE |
 | GPIO | PA6 | 7 | STR |
-| | | 8 | GND |
+| | | 8 | NC |
 The VPP and GND pins to drive the VFD segments are provided using an external power supply.
 I use a [[http://www.aliexpress.com/item/120W-DC-DC-Boost-Converter-10-32V-to-36-60V-48V-54V-4A-Step-Up-Adjustable/1414029224.html|boost converter]] and set it to 50V.