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18% OFF SIM800L GSM GPRS Modulbræt Micro Sim Overførselskort Core Board Quad Band US$8.99 US$10.99 View It

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Bruno Poultier 29/11/2020

SIM800L fonctionne en France. C'est toujours assez difficile de choisir un produit avec différentes bandes de fréquences et leurs classes. Il n'y a pas de protection ESD (réseau de diodes pour absorber les chocs électrostatiques) donc attention. 4 * seulement car on aurait pu avoir le signal de la led directement sur une pin de sortie pour gérer le statut de ce module sur le réseau GSM. Du coups, on soude un fil sur la LED qui indique ce statut, pas pratique mais ça fonctionne. Astuce pas cher pour alimenter ce module depuis un Arduino. Prendre 2 diodes 1N4004 en série et une supercap en sortie pour absorber les grosses pointes de courant (2A tout de même !).

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