I'm attempting to make my own ISP programmer for an Atmega168-20PU. For the sake of learning I want to have an LED flash as bits are being flashed to the chip. If I use an SMD LED 0603 size, in series with 220 ohm resistor in between the 5V and MOSI line will I risk corrupting data due to voltage drop across LED? What are some other concerns I should be aware of.
I want to make a similar use-case as this: TX LED