In previous posts in this series, We saw What are the GPIO pins, and how to control a LED with them from our Raspberry PI by Bash and Python, o with one web application.
Katika machapisho ya awali katika mfululizo huu, Tuliona Vigingi GPIO ni nini, na jinsi ya kudhibiti na LED nao kutoka yetu Raspberry PI na Bash na Chatu, Ee na moja programu tumizi ya wavuti.