Automatic fan control module for Raspberry Pi with I2C pins
Do you want to the life of your fan, reduce its noise and control it automatically?
With this MaticControl fan module you can! As a bonus, the second connector provides access to the I2C pins. I2C pins along with a 3.3V pin are often used to connect displays or other modules that use an I2C pins.Your software is protected with Microchip crypto module.
Here is link for the product: https://leapmatic.com/product/hatl02fc-auto-fan-control-crypto-module-i2c-pins/
Download the full PDF manual from HERE
Place it on pins 1-10. And this is all you have to do on the hardware.
I. Fan Control
About the software for the fan control you have two options:
- Graphical
From Raspberry icon > Preferences> Raspberry Pi Configuration > Performance tab >set fan enable; Fan GPIO 4; and the temperature at which you want the fan to turn on. Save with OK
Thus, when the processor reaches the temperature you set, the fan will turn on. It will turn on off only when the processor temperature drops 10 degrees below the set on temperature. (For example, if you set the On temperature to 75 degrees, the fan will turn off when the processor reaches 65 degrees).
With these few easy steps, you now have automatic fan control.
2. Console
Open the Console and type
sudo raspi-config
You will open a graphical interface menu where you need to choose Performance Options:
Then Choose “Fan”
It will ask you if you want to enable fan temperature control? – Choose “Yes”
Here you need to set GPIO 4
Then set the temperature on which the fan will turn on
At last the system will inform you about the changes.
II. I2C pins and 3,3V power supply
GPIO 2 and GPIO 3 – the Raspberry Pi’s I2C1 pins – allow for two-wire communication with a variety of external sensors and devices. The I2C pins include a fixed 1.8 kΩ pull-up resistor to 3.3v. They are not suitable for use as general purpose IO where a pull-up might interfere.
I2C pins along with a 3.3V pin are often used to connect displays or other modules that use an I2C pins.
III. Crypto module
Keep your software safe from stealing with this MaticControl crypto module. Most microcontrollers are not designed to protect against snoopers, but a crypto-authentication chip can be used to lock away private keys securely.
Once the private key is saved inside, it can’t be read out, all you can do is send it challenge-response queries. That means that even if someone gets hold of your hardware and can read back the firmware, they won’t be able to extract it!
The ATECC608 is the latest crypto-auth chip from Microchip and to make working with the it as easy as possible, we’ve put it on a PCB . This allows you to use it with Raspberry Pi or other similarly equipped boards without needing to solder.
ATECC608 uses I2C to send/receive commands. It will work with 3.3V or 5V power/logic micros, so it’s ready to get to work with a range of development boards. Once you ‘lock’ the chip with your details, you can use it for ECDH and AES-128 encrypt/decrypt/signing. There’s also hardware support for random number generation, and SHA-256/HMAC hash functions to greatly speed up a slower micro’s cryptography commands.
For our surprise this chip does not have a public datasheet, but it is compatible with the ATECC508 earlier version which does, so please refer to that complete datasheet as well as the ATECC608 summary sheet.
Note: This MaticControl module provide access to I2C pins via separate connector on the top of the board, so you can use them but it covers the pins for: 5V power supply, GPIO14 (TXD), GPIO15 (RXD). If you want to use them we offer modules (HATs) that provide access to these pins via separate connector on the top of the board.
Here is link for the product: https://leapmatic.com/product/hatl02fc-auto-fan-control-crypto-module-i2c-pins/
Electrical Scheme of the module:
