*PA5 = SCLK
'''STG719 (DPST) - U2'''
* PC11 = IN
'''STG719 (DPST) - U3'''
* PD2 = IN
'''STG719 (DPST) - U4'''
* PB5 = IN
'''STG719 (DPST) - U5'''
* PB4= IN
'''DG636 (Dual DPST) - U6'''
* VDD = ENABLE (always HIGH)
* PA10 = A0
* ''UnknownPin#1'' (routes under STM) = A1
'''STG719 (DPST) - U7'''
* ''UnknownPin#1'' (routes under STM) = IN
'''SN74LV4053 (Triple 2Ch Mux/Demux) - U8'''
* PB13 & PB14 = A
** connected by trace
** ''Why? Read back?''
* ''UnknownPin#1'' (routes under STM) = B & C
** connected by trace
<br />
==Identified Supplementary IC's==
<gallery>