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This is a Rapberry Pi plate that allows controlling and logging temperature. It connects to a K type probe, and has 2 control relays
This is a Rapberry Pi plate that allows controlling and logging temperature. It connects to a K type probe, and has 2 control relays
47 backers pledged $2,290 to help bring this project to life.

About this project

$2,290

47

Link:

The board will be available here after the Kickstarter campaign is over:

http://www.robogaia.com/raspberry-temperature-controller-plate.html

Description:

This is a board(plate in Raspberry Pi language) that allows reading the temperature through a thermocouple sensor and controlling 2 external loads such as fans , peltier coolers or others.

The board can read temperatures form 0 to 400 degrees Celsius (32 to 752 degrees Fahrenheit)  , but this is limited to the K type thermocouple used. A higher temperature could be read if  the thermocouple probe is  replaced with a higher temperature probe (not provided).

Uses:

1. Temperature controller

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2. Temperature logger

It can be used as a temperature logger extremely  easy . Since it provides a script to read the temperature , just type

read_temperature > log.txt

This will save all the temperature data to a file

3. Reflow oven controller

Hardware :

The board sits on top of the Raspberry Pi board and is connected and powered  through the extension port.

Software:

The board comes with an installation script that will install some basic scripts that will allow some basic functionality to the board.

Some of the scripts :

1.  read_temperature  -will print the temperature read from the sensor

2  relay_on  cold/hot   will turn on the relays  named cold or hot

3. relay_off  cold/hot   will turn off relays names cold or hot

4. temperature_hold   will try to control the temperature by turning the    cold or hot relays

Web Interface :

we will provide a Python / Flask script that allows the temperature to be read through a web browser.

Manufacturing :

We design and build the boards in-house.We own a pick and place machine ad a reflow oven.

UPDATE :

Strech goal : $2500

Think of possibility to transform this board to a reflow oven controller.

We will add code that will allow temperature profiles.

Temperature profile
Temperature profile

Risks and challenges

In case of a reasonable demand, all units will be built by us; if the demand is higher the parts of the unit will be outsourced locally which means a longer lead time. We have experience with building and shipping products, and also we have most of the equipment in house. With all this, we try very hard to minimize the risk.
Also if there is a higher demand there might be some parts shortages which might delay the production. Fortunately the parts could be procured from multiple places.

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  1. Select this reward

    Pledge $10 or more About $10

    Barebone PCB board

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    Pledge $35 or more About $35

    The board kit that has the SMD components soldered but the connectors and the relays are not soldered. It does NOT include the K type thermocouple

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  3. Select this reward

    Pledge $45 or more About $45

    The board kit that has the SMD components soldered but the connectors and the relays are not soldered. It includes the K type thermocouple

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    5 backers
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  4. Select this reward

    Pledge $49 or more About $49

    The completely assembled board with the K type thermocouple

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    37 backers
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Funding period

- (30 days)