diff --git a/README.md b/README.md
index b37fe8c..2b06576 100644
--- a/README.md
+++ b/README.md
@@ -10,23 +10,25 @@
 - I2C
     - v2
         - [x] Umbau
+            - [x] union based data structures (removes the need for magic numbers
+            - [ ] save types inside `pi2cproto.h`
         - [ ] old
-        - [ ] ballast
-        - [ ] reused
+        - [x] ballast
+        - [x] reused
+            - remaining compatability to v1
         - [ ] new
-    - [x] readout UUID
-    - [x] register table
+            - [ ] UUID readout
+            - [ ] r/w-ablility for both 1.8V potentiometers
+    - [x] raw memory mapping
+        - [ ] why is `mon48v = 0x11`?
+        - [ ] why are `digipoti` and `anapoti` only readable from `0x02` and 0x04` not partial?
+
 - Calibration
-    - [x] characterize adc samplingrate
-        - [ ] charactrize resulting stddev
-
-
-    - [ ] characterize these curves
+    - [x] characterize adcbehaviour
+        - [ ] plot resulting fitted incline of $\Delta $V vs. num. of readcycles
     - [x] polynomials
-    - [ ] polynomials rw-able
-
+        - [ ] polynomials rw-able
     - [x] 10I calc
-
     - ADC vs. Keithley
         - [ ] 48V
         - [ ] 10V
@@ -35,7 +37,6 @@
         - [ ] 48I
         - [ ] 10I
         - [ ] 1.8I
-
     - Temp
         - [ ] accuracy
         - [ ] position in system
@@ -43,5 +44,7 @@
 
 - 1.8V Regulation
     - [ ] compare regulation concepts
+        - there's overshoot: less oscillation is good, as long as we don't take forever to achieve those
+        - [ ] stabilize
     - [ ] regulate the system (with missing information)
-    - [ ] stabilize
+        - [ ] write / formulate approach and resulting formula / algorithm