Over the course of the last months, I have seen many requests from the Designspark community about suitable displays for the IOT2020. Here is a collection of the ones I found from different sources. If you know another one, please share it here.
1. Jan Cumps, the winner of the IOT2020 Hackster contest has used an Adafruit 16x2white on blue LCD.
Find the driver instructions here
2. Two other variants - also both 16x2 alphanumeric - can be found on GitHub. Number one looks like an off the shelf display with a keypad. Instructions for the interface board to get it connected to the IOT2020 are available here.
The other variant is a self-developed display board that fits the IOT2020 case.
For both of these GitHub provides nodes for easy set up with the IOT2020.