Update README.md

Function Generator/README.md

@@ -4,11 +4,13 @@
 * Development + Debug environment:
   * VSCode on Win 7
   * OpenOCD and GDB
-  * Picoprobe running on PI Pico providing SWG debugger for target device
-* Target dievice changed from Pi Pico to Pimoroni PGA2040 to provide more GPIO pins.
-* Nixie tube display
-  * Multiplexed to reduce hardware
-  * 170 volt PSU for tubes created from 4 x 1.5v batteries + custom SMPS
-* 8 bit R2R ADC creating various waveform outputs for oscilloscope display
+  * Picoprobe running on PI Pico providing SWG debugger
+* Direct digital synthesis (DDS) Function Generator
+  * Target device = Pimoroni PGA2040 to maximise GPIO connections
+  * Nixie tube display with 170 volt SMPU
+  * Digital level control
+  * 8 bit R2R Analog to Digital converter
 
-![Hardware](https://user-images.githubusercontent.com/3483157/163587205-dd22d308-fde1-4668-b7d6-f42ee1dcb94b.JPG)
+![Hardware](https://github.com/oddwires/RP2040/blob/master/Function%20Generator/Images/FunctionGenerator.jpg)
+
+(and my repaired GEC MiniScope)