Programming a stand alone STM32F103C8T6 (Blue Pill) with Arduino

[mrburnette]

just an FYI....

Years ago, some may remember Scott Edwards who became rather synonymous with "serial LCD" backpacks. Here

A British company later made a serially driven OLED (Winstar) using a PICAXE. These are still available when the cost justifies their use:

https://picaxe.com/hardware/add-on-modules/

Distributors are often available that are easier than ordering from the UK directly.

When high BAUD is not necessary but high-contrast, no backlighting, and only 3-wires ... these may be just the device.

[fredbox]

This is another good resource for LCD displays with I2C backpacks: https://arduinoinfo.mywikis.net/wiki/LCD-Blue-I2C