Hardware Requirements

Hardware Requirements

Here is an awesome guide on setting up a Raspberry Pi for brewing control. They use CraftBeerPi as the software, but in terms of hardware and wiring things up, this is exactly the same for BrewPress.

Raspberry Pi

All models of Raspberry Pi should work. We have tested with Raspberry Pi B and Raspberry Pi 3 but they should all work.

You should use a 5V/2A power supply but higher ampere rating power supply’s will also work.
The red PWR led will light up and stay solid red if you have enough power, otherwise it will blink if the voltage supplied is below 4.6v.

Temperature Sensors

You will need a temperature sensor connected to the Raspberry Pi.
The sensors used should be the 1-Wire® Digital Thermometer DS18B20 or DS18S20.

You can connect multiple sensors to the Raspberry Pi and these can then be used within BrewPress.

A single 4.7k Ohm resistor is also required to wire up the sensor(s).

Solid State Relay AND/OR TP-Link WiFi plug

To be able to switch power on/off on your elements or pumps you need either an SSR (Solid State Relay) connected to the Raspberry Pi or you can use a Wifi plug from TP-Link.

** Warning – If using an SSR, you will need to wire it up for mains power. This is extremely dangerous if you don’t know what you’re doing. If you decide to use an SSR, you should have it wired or checked by a suitably qualified electrician. Mains power can kill.

The SSR should be something like 3-32VDC Controlled and preferably of a good quality. There are many options available and it would pay to do some research regarding the best SSR to use with your equipment.

If using the TP-Link Wifi plugs, you will also need to install the free TP-Link extension.