With all the materials needed in hand, it is time to get on with the build. The first thing to do is print out the 3D part you’ll need for this build. We have included the models above, but you can ...

Arduino library for the I2C LCD display, typical 20x4 characters. The library is inspired by the excellent New-LiquidCrystal library by F. Malpartida. Therefore the interface is kept quite identical, ...

DY-SV17F Serial / IO 4Mb onboard flash 5W 4Mb flash memory, which can be triggered by serial commands or where 8 IO pins can be used to trigger 8 corresponding sound files. Requires some additional ...

The small display provided basic information about the Wi-Fi connection, whether a visitor is detected, SD card capacity status, IP address, etc… There’s no USB port, and programming/firmware flashing ...

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