C27 is 10nF C50 is 10nF R18, 19 are 10k C9, C11, C12, C13 500nF replaced with 1uF tant C8 DNP
Changes needed
- Pull down on boot0 / PB8 (Or option byte?)
- Capacitor couple nRST to ground
- Cortex-M debug header (and testpoints)
- More decoupling around MCU
- Second state current driver: Flip + & -
- Capacitive filtering of LD_I_CTRL
- PD backwards???
- can the LD I chose even work???
- Automatic offset control
Current state
- Pot adjusts TIA gain
- Enameled wire corrects for second stage of current supply amplifier inputs being swapped
- Big brown wire is to inject current, bypassing current supply (since it’s output bjt, Q1, is removed)
- Blue wire is on reset of MCU for programming without power-on reset