Update README.md

Author: SpeedyCraftah

README.md

@@ -4,6 +4,10 @@ A programmer for the AVR architecture microcontroller, specifically the ATTiny84
 - Instructions are streamed using the serial port to the Raspberry Pi Pico via USB which handles the rest.
 - Verifies flashed pages after programming to confirm a successful flash.
 
+## Problem
+- Initially, the ATTiny did not respond to any of my SPI programming commands, eventually after a bit of back and fourth with Microchip support, we figured out that the ATTiny does not support programming via 3.3V which the Raspberry Pi Pico uses for GPIO logic; all SPI pins must use a logic voltage of 5V, simply supplying Vcc with 5V is not enough.
+  - Luckily I managed to bypass the requirement for a 5V programming device by using a 3V3 5V logic converter which works by converting 3.3V signals to 5V signals, which effectively acts as a translator between the Pico and the ATTiny (PS. Any 3.3V to 5V logic converter PCB with support for at least 4 ports (MISO, MOSI, SCK, RESET) should work).
+
 ## How to use
 
 ### Flashing software
@@ -24,7 +28,3 @@ A programmer for the AVR architecture microcontroller, specifically the ATTiny84
 - A while back I got hold of an ATTiny84A but had no idea how to program it, later realising I needed an Arduino or a dedicated AVR programmer, hence decided to try to program it via a Raspberry Pi Pico.
 - I started looking through the [ATTiny datasheet](https://ww1.microchip.com/downloads/en/DeviceDoc/ATtiny24A-44A-84A-DataSheet-DS40002269A.pdf) and attempted to program it according to the serial programming section.
 - It served as a fun project as I was interested in the AVR architecture and wanted to challenge myself by writing a programmer for it from scratch.
-
-## Problem
-- Initially, the ATTiny did not respond to any of my SPI programming commands, eventually after a bit of back and fourth with Microchip support, we figured out that the ATTiny does not support programming via 3.3V which the Raspberry Pi Pico uses for GPIO logic; all SPI pins must use a logic voltage of 5V, simply supplying Vcc with 5V is not enough.
-  - Luckily I managed to bypass the requirement for a 5V programming device by using a 3V3 5V logic converter which works by converting 3.3V signals to 5V signals, which effectively acts as a translator between the Pico and the ATTiny (PS. Any 3.3V to 5V logic converter PCB with support for at least 4 ports (MISO, MOSI, SCK, RESET) should work).