Pi-SPi-Series

Raspberry Pi and Temperature Controls

Raspberry Pi and Temperature Controls

The term HVAC means Heating, Ventilation, and Air Conditioning. The simplest form of an HVAC controller that has been around for ages is the simple...

Raspberry Pi and Temperature Sensors

Raspberry Pi and Temperature Sensors

The most common analog input for any control and measurement system is temperature and the most common (and least expensive) temperature sensor is ...

Raspberry Pi and Power Monitoring with RS485 Interfaces

Raspberry Pi and Power Monitoring with RS485 Interfaces

Power Monitoring in commercial applications such as data centers, utility rooms for buildings, lighting controls, etc. use multi-branch current mon...

Raspberry Pi, Bi-Color LEDs and the 74HC595 Serial Shift Register

Raspberry Pi, Bi-Color LEDs and the 74HC595 Serial Shift Register

Every project I ever worked on required some form or LED indicators, usually status indicators where OK = Green, Warning = Amber and Critical = Red...

Raspberry Pi and RS485 Relay Output Modules

Raspberry Pi and RS485 Relay Output Modules

The Raspberry Pi is finding it's way into more and more industrial applications. Most relay modules have either very few contacts available and/or ...

Raspberry Pi and 4-20 mA Inputs

Raspberry Pi and 4-20 mA Inputs

Most industrial process controls applications still use 4-20mA analog signals for transmitting variable data. The Raspberry Pi does not have an on ...

Raspberry Pi And Up To 64 Isolated Digital Inputs

Raspberry Pi And Up To 64 Isolated Digital Inputs

Industrial process controls require the use of many types of input signals, from switch closures, relay contacts, or voltage levels which can be ei...