six I2C controllers, and six UARTs – all on its 40-pin header. You can’t make use of all of these at once, but with up to four different connections wired to a single pin you can carve out a ...

However, if you use an LCD module with I2C ... diagram of the lcd backpack) Now let’s get started. At first you need to solder the backpack to your LCD module. Ensure that the backpack pins are ...