The ability to compile a completely new custom Linux kernel makes it easy to create devices based on the HLK-RM04 module. There are many software packages that are available as part of OpenWRT. Once you can compile your own kernel…
Author: commons
Distracted
WS2812B wiring using ribbon cable and IDC connectors. Road Warrior is a tiny Arduino Uno design that is built for traveling in a knapsack. The raw materials going into a new WiFi enabled GRBL CNC controller I’m designing. A wearable…
Step 4 Build Uboot HLK-RM04
In this step we install a set of tools that allow you to build the Uboot loader. This is not generally required because I have created two Uboot images for your use. However if you want to change Uboot this…
Step 3 Ubuntu12 Install
The build environment for HLK-RM04 development is quite easy to setup on a Linux computer or virtual machine. I have used Ubuntu12 for this project and I would suggest starting there because the build dependencies are already worked out for…
Step 2 Install Openwrt
It has been a long time coming but we are finally ready to install OpenWRT. I have provided a pre-built image for this. Using the Uboot loader we can install a new Linux image on our module. This only takes…
Step 1 HLK-RM04 Uboot
Installing Uboot over factory default The first step in preparing an HLK-RM04 module for your own use is to enable the Uboot loader. Uboot is a full featured, bootloader that initializes the system on a chip so that it is…
HLK-RM04 Embedded Linux
As I continue to develop embedded Linux designs I needed a smaller design that can be deployed as a standalone project. The new design consists of a small 4x5cm PCB that acts as a carrier for the HLK_RM04 wifi module.…
SMT Assembly Workshop
Learn to assemble and reflow solder a double sided SMT Arduino printed circuit board. At the end of this workshop you will have a working Arduino that you can take home. Note that every effort will be made to ensure…
Eagle Routing Workshop
Step1 – Creating a layout from the schematic Open the “Road_Warrior” schematic. From the file menu select “switch to board” setup the placement grid by typing “grid mm” and “grid 1” in the command line. This sets the grid to…
3D Car Design
I was thinking about how I might design a better looking body for my paper car designs. I needed the design process to be simple to allow young students to design their own car bodies which could be 3D printed.…