![Sonoff NSPanel Pro 120: Linux Display Subsystem [Part 1]](/content/images/size/w600/2025/02/photo_2025-02-18_11-32-23-1.jpg)
sonoff
The first thing we would like to get working in our fresh Linux build is, of course, the LCD screen, as it is essential for running any kind of desktop environment. The graphics stack on Linux can be a bit complicated. The following diagram illustrates the full relationship between the
In this article, let's focus on the boot sequence of Rockchip SoCs running Linux and try to understand the terminology, what each component is, and what it is responsible for. So, let's start with the simplified feature image above. BootROM (aka Boot Code) This is the
MaskROM and Loader mode are special Rockchip modes that allow a user to read/write data to memory using USB. MaskROM is internal firmware that runs on the Rockchip SoC when no bootable device is found or when a special pin is tied to ground. Since MaskROM is built into
![FTDI FT232RL: Bit Bang Mode (Linux) [Part 2]](/content/images/size/w600/2025/01/Logo-1.jpg){kind=logo}
In the previous post, we covered the installation of FTDI drivers on Ubuntu. This section focuses on controlling GPIO using a Python script. FTDI has 8 digital pins used for serial connections (RXD, TXD, RTS, CTS, DTR, DSR, DCD, RI) and 5 CBUS pins. Initially, I thought to use the
![FTDI FT232RL: Bit Bang Mode (Linux) [Part 1]](/content/images/size/w600/2025/01/71rq-yhiZ4L.jpg)
ftdi
I want to discuss the topic of easily controlling GPIO pins from a computer via a wired interface. This is particularly useful when working with a development board that I need to reset physically or put into DFU (Device Firmware Upgrade) mode. Typically, this process requires pressing the physical Reset
unitree
Unitree Robotics is now in Las Vegas attending the CES 2025 exhibition. CES is the most famous technology show, and this time the company was gathering a crowd around their booth. Here are demo videos of the robots that Unitree showcased this year. Enjoy!
unitree
The latest Unitree 1.1.3 firmware update is currently only available for CN (Chinese) dogs, but on New Year's Eve there is a will for magic and presents. So, let's not limit ourselves and make the magic happen. Thanks to the user in China i
rockchip
In this article, let's download the latest Rockchip Linux SDK from the Rockchip server. This process requires an authenticated SSH private key that has been registered on RK’s official repo server. To pass the SSH challenge-response verification during repo sync, make sure you have the following configuration
sonoff
In this article, let's extract the device tree (.dts) file from the backup. A Device Tree is a data structure that provides a way to describe the hardware components of a system in a hierarchical manner. It allows the Linux kernel to understand the hardware layout without hardcoding
itead
In the previous article, we already got the partitions read out. Now it's time to make a backup and save it so that whatever we do, we can at least revert all the changes. rkdeveloptool Options: We will use the rkdeveloptool rl command to read all the sectors.
sonoff
In the past, I worked in the smart home industry and was always dissatisfied with touchscreen wall panels, as they had limited functionality and weren't customizable at all. As time passed, more options entered the market; however, they are still locked into the manufacturer's ecosystem and