Design Patterns no acesso ao hardware A característica mais marcante dos sistemas embarcados é que eles precisam acessar o hardware diretamente., uma vez que o objetivo de um sistema embarcado é que o software esteja incorporado em um “dispositivo inteligente” que forneça algum tipo específico de aplicacao, e isso exige…
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The OR gate made with two discrete diodes
The OR gate As an exercise to practice some topics on analogue electronics at the bench, I developed an OR gate using two 1N4004 diodes. The bibliography I used was the classic “Electronic Devices and Circuit Theory” from Boylestad, in its chapter on diodes. I also modelled the circuit in…
The humidity sensor
Summary This document completely describes the humidity sensor: the motivation for creating it, its technical specifications and how it is being currently used. Background After spending time at home during the first 2020 lockdown in the UK (between March and August 2020), I developed the hobby of taking care of…