diff --git a/README.md b/README.md
index 8557e02..0793fd6 100644
--- a/README.md
+++ b/README.md
@@ -16,8 +16,7 @@
     - v2
         - [x] Umbau
             - [x] **packed** union based data structures (removes the need for magic numbers
-            - [ ] safe types inside `pi2cproto.h`
-        - [ ] ~~old~~
+            - [ ] (safe types inside `pi2cproto.h`)
         - [x] ballast
         - [x] reused
             - remaining compatability to v1
@@ -31,13 +30,14 @@
             - same as above
     - [ ] instability on mass spi communication
         - timebased / overflow ?
+        - gdb-server feasable?
 
 - Calibration
     - [x] characterize adcbehaviour
         - [x] plot resulting fitted incline of $`\Delta`$V vs. num. of readcycles
         - [x] see if v_pin same as v_keith_pin
             - on dV of **small enough** -> adc circuit working correctly -> calib
-        - [ ] reasoning for using a given `sampleTicks` value
+        - [x] reasoning for using a given `sampleTicks` value
             - smallest gain error -> inconsistent
             - smallest offset -> inconsistent
             - hightst samplerate -> `sampleTicks = 1`
@@ -46,29 +46,30 @@
     - [x] polynomials
         - [x] polynomials rw-able
     - [x] 10I calc
-    - [ ] differences between PIts?
-        - if yes then we need a `PITDB`
-        - if not then we can hardset those values
+    - [x] differences between PIts?
+        - if yes then we need a `PITDB` -> `pitdb.yaml`
+        - standard only for default
     - [ ] ADC vs. Keithley
-        - [ ] redo after selection of `sampleTicks` value
-            - [ ] 48V
+        - [x] redo after selection of `sampleTicks` value
+            - [x] 48V
             - [ ] 10V
-            - [ ] 1.8V
+            - [x] 1.8V ana
+            - [x] 1.8V digi
         - [ ] calibrate based on fit
             - [ ] 48V
             - [ ] 10V
             - [ ] 1.8V
-    - ADC vs. EL
+    - [ ] Current
         - [ ] without calib
-            - [ ] 48I
-            - [ ] 10I
-            - [ ] 1.8I
+            - [x] 48I
+            - [ ] 1.8I ana
+            - [ ] 1.8I digi
         - [ ] with calib
             - [ ] 48I
-            - [ ] 10I
-            - [ ] 1.8I
+            - [ ] 1.8I ana
+            - [ ] 1.8I digi
     - Temp
-        - [ ] accuracy
+        - [ ] accuracy?
         - [ ] position in system
             - inside chip -> on underside of board, between frame and board
         - [ ] relevancy
@@ -122,3 +123,13 @@
         - "How to calibrate a PowerIt"
     - Regulation
 - Outlook
+
+## Notes
+
+### 1V8
+RS = 2* * 4.7k
+RP = 75k
+
+### 9V6
+R1 = 30k
+R2 = 10k