Liquid-crystal goodness anyone?!
That’s right! In today’s tutorial I show you how to wire up and program your very own mini LCD display to your Raspberry Pi! By the end the of this video you will be printing your own messages to your very own screen module and will understand all of the Python code behind it. A good, cheap and enjoyable little project for Raspberry Pi – with plenty of scope for your own further developments!
Raspberry Pi Raspbian official download: https://www.raspberrypi.org/downloads
Grab an LCD display for under £5 here: https://ryanteck.uk/displays/11-16×2-character-i2c-lcd-display-0635648607139.html?search_query=16×2&results=3
Need some female-to-female jumper wires? Grab those here too: https://ryanteck.uk/cables/61-jumper-wires.html?search_query=jumper+wires&results=7#/14-jumper_wire_length-30cm_118/12-jumper_wire_pins-female_to_female
Take a look at the code and installation script here: https://github.com/the-raspberry-pi-guy/lcd
Install all of the code: git clone https://github.com/the-raspberry-pi-guy/lcd
Change into the new directory with downloaded code: cd lcd
Install the required software: sudo sh install.sh
View either of the demo programs with: nano program_name.py
Run either of the demo programs with: python program_name.py
Thanks for watching! Don’t forget to like, subscribe and share!
The Raspberry Pi Guy
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Raspberry Pi Compute Module 3 (CM3) digs up gadgets
Sort of announced in July 2016, the most up to date Raspberry Pi Compute Module 3 (CM3) is considered to go to the market in the near future. Last Oct computer equipment maker NEC already announced a new array of professional P and V Series large format displays that gracefully embed the RPi CM3 module. The new module, available in 2 flavors – CM3 and CM3L (lite) – will complement the CM1 module released some years ago.
Specifications for the CM1, CM3 and CM3L SODIMM modules appear in the data sheet found on the RPi website
. Where the CM1 was based on a BCM2835 processor (as used on the original RPi and RPi B+ models), the CM3 has a quad core 1.2 GHz BCM2837 CPU, the same as the RPi 3. It provides 1 GB of LPDDR2 RAM and 4 GB eMMC Flash. The ‘L’ version is a CM3 with no eMMC Flash, allowing the owner to link up his/her individual SD/eMMC system. The pinout of the CM1 and CM3 modules are the same but the CM3 module is one millimeter higher (31 millimeters).
The money necessary for the new modules isn’t known yet, but since a CM1 retails at roughly ￡20, a matching price may well be estimated for the CM3.
The CM3 is founded upon the Raspberry Pi 3 hardware and is ideal for industrial use to offer a economical opportinity for folks to make customized products based on the Pi software and hardware system. The Compute Module line is smaller and has less attributes and ports than a standard Raspberry Pi, allowing it to be to suit Internet of Things (IoT) products.
“The module works with a standard DDR2 SODIMM form factor, sockets for which are made by several producers, are effortlessly accessible, and are cheap,” Raspberry Pi COO and hardware lead James Adams explained in a post.
There are two designs of the CM3. Below are the technical specs for both:
BCM2837 chip at to a maximum of 1.2GHz
4Gigabyte of on-module eMMC flash
BCM2837 processor at to a maximum of 1.2GHz
SD card interface on Module pins so a user can hook this up to an eMMC or SD card of their choice
Both variants can be slotted into a newly released Compute Module IO Board V3 (CMIO3) which lets you perform the following:
Provides needed power to the CM3
Permits you to program the CM3 Standard’s flash memory or to work with an SD card on the Lite version.
Connect to the processor interfaces in a a little more friendly fashion (pin headers and flexi connectors, just like the Pi)
Provides the needed HDMI and USB connectors allowing you to have an entire system that can boot Raspbian (or perhaps the Operating-system of your choosing).
“This board features both a starting template for those who want to design with the Compute Module, and a faster way to begin with experimenting with the hardware, and building and testing a system, before you go to the fee for fabricating a custom board,” Adam said.
The older Compute Module model will still be provided, for individuals that wouldn’t like the CM3’s performance boost. Based on the Raspberry Pi official magazine The MagPi:
“With a few caveats, the CM3 can be used a drop-in substitute for the CM1 since they’re pin compatible; the CM3 is 1mm taller, however, while the CPU can pull considerably more current from the VBAT power supply line and will definitely contribute to a whole lot more heat under heavy load.”