Relay switch modules
26 March 2016 | Updated 27 January 2018
Relay switch modules are used as high voltage AC switches by connecting a signal and DC power supply to it. These modules are made up by a relay (the ‘heart’), screw terminal connectors, a resistor, diode, capacitor, transistor and LED – making it perfect for electronic hobbyists to use in projects. More…
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Electronics
Sending alert emails from a Raspberry Pi for home automation projects
Sending alert emails from a Raspberry Pi for home automation projects
13 February 2016 | Updated 30 June 2017
On the Raspberry Pi, alert messages can be sent using various communication mediums (e.g. emails, SMSs and Twitter). Various APIs and collected data from sensors can be the source for alert emails. This post shows how to send emails with a Raspberry Pi using terminal commands. Alert emails can also be configured to be sent by Cron. More…
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Raspbian
The HC-SR501 Pyroelectric Infrared Motion Sensor Module
HC-SR501 Pyroelectric Infrared Motion Sensor module
10 January 2016 | Updated 16 February 2018
HC-SR501 Pyroelectric Infrared Motion Sensor modules are electronic sensors that is used to detect motion. These modules are based on passive infrared technology with a high sensitivity and reliability. More…
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Electronics