In a viral Twitter thread that gained more than 10,000 likes and retweets, Mr García explained how he made his “contraption” out of a receipt printer, a Raspberry Pi mini-computer and a SIM card, creating it over the space of a few days over Christmas.
“The plan was to devote little time to it (around 20 hours) and that it could be ready to go once plugged in with no maintenance,” he said.
It relies on a bot he created in social messaging app Telegram that receives messages and gives a command to print.
Ludi will soon be able to get pictures and texts simply by turning the machine on – once Mr García has managed to make the 200-mile trip from Valladolid to her home in the Basque Country town of Basauri to deliver it.
He said he was quite happy with the quality of the black-and-white photographs, but would like to make a more elegant 3D-printed casing next time around.
The device is a simplification of a similar device invented last year by another Spanish engineer, Manuel Lucio, for his grandmother. Named the “grannygram”, it allows its user to record their voice and convert it into a text message for the family chat account.