Update images/impedanceTest.png, README.md, images/RpInterpolation.png,...

Update images/impedanceTest.png, README.md, images/RpInterpolation.png, images/encoderTesting1.png files

README.md

@@ -14,6 +14,8 @@ The image below links to a video of the target mounted with under 10um of perpin
 
 And [here's another video showing the first step of sweeping the turned delrin encoder mount](https://gitlab.cba.mit.edu/davepreiss/ldcoder/-/blob/master/images/rotorNoTarget%20.mp4) that's sitting underneath the rotor. It took some adjusting with a flathead screwdriver to dial it into under 10um error, but seems stable and should be fine for initial testing despite just being a press fit at the moment.
 
+Before 
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 ## HTMSTMAA Week 8 - 4/22/21
 
 This week I managed to get the LDC1101 configured and up and running, and in the process switched over to an [STM32L432KC](https://www.st.com/en/microcontrollers-microprocessors/stm32l432kc.html) in Nucleo form, which is a cortex M4 clocked at 80 MHz with an FPU, and most importantly gives straightforward access to timer peripherals (my struggle last week was that after configuring a timer on the Feather M4, it seemed to promply get overwritten by Arduino's USB peripheral). Ultimately this will make more sense considering I would like to integrate this sensor into a closed loop stepper driver that I also built on ST hardware.