add changelog

This commit is contained in:
King Kévin 2017-12-23 12:48:48 +01:00
parent 79058b9332
commit 592d153083
1 changed files with 15 additions and 0 deletions

View File

@ -0,0 +1,15 @@
second prototype
major fixes:
- add bus switch instead of common power rail for pull-up resistors
- replace MAX232 RS-232 transceiver with 3.3V capable and enable pin alternative
- add diodes on xV voltage regulator output to prevent voltage regulator to sink current
- add transistor to disable completely 12V voltages regulator, allowing it to got to 0V instead of 5V)
first prototype