Hugo Pereira

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Hugo Pereira
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WARNING: Some people try to build this with an optocoupler with zerocrossing coz 'that is better' right? Some are even told in electronics shops it is better to use such an optocoupler. WRONG. This will only work with a random fire optocoupler: NOT igniting at zerocrossing is the principle of this dimmer.Switching an AC load with an Arduino is rather simpel: either a mechanical relay or a solid state relay with an optically isolated Triac. (I say Arduino, but if you use an 8051 or…

WARNING: Some people try to build this with an optocoupler with zerocrossing coz 'that is better' right? Some are even told in electronics shops it is better to use such an optocoupler. WRONG. This will only work with a random fire optocoupler: NOT igniting at zerocrossing is the principle of this dimmer.Switching an AC load with an Arduino is rather simpel: either a mechanical relay or a solid state relay with an optically isolated Triac. (I say Arduino, but if you use an 8051 or…

ArduFarmBot: Controlando um tomateiro com a ajuda de um Arduino e Internet das coisas (IoT) «

ArduFarmBot: Controlando um tomateiro com a ajuda de um Arduino e Internet das coisas (IoT) «

how-to-use-mouse-scroll-wheel-encoder-with-arduino/

how-to-use-mouse-scroll-wheel-encoder-with-arduino/

Arduino e ULN2803: controlando circuitos de maior tensão com um chip fácil de lidar

Arduino e ULN2803: controlando circuitos de maior tensão com um chip fácil de lidar

Stand Alone Arduino ATmega328p: 7 Steps (with Pictures)

Stand Alone Arduino 7 Steps (with Pictures)

Módulo DS3231

Módulo DS3231

Mini Weather Station With Attiny85

In a recent instructable described a mini weather station that works pretty well, using two Arduinos. Maybe not everyone wants to sacrifice 2 Arduinos to get humidity and temperature .