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In this video I show how to design a circuit that monitors batteries to warn when to recharge them. Using PIC18F2455 microcontroller and ST7920 graphic display. Attention: It is not possible to reply to some comments, they appear retained and it is not possible to reply to them. Project files: Option 1: https://www.4shared.com/zip/T06hr8mPf... Option 2: https://drive.google.com/file/d/1kEya... ------------------------------------------------------------------------------------------------------------------------------------------- Channel social networks: Channel Instagram: / wd_projetos Channel blog: https://bgwdprojetos.blogspot.com/ Personal social networks: They are disabled.