DevTerm

DevTerm OS Images

Product	Image name	Release date	System	Kernel	Size	Downloads	MD5sum
DevTerm A04	DevTerm_A04_v0.2h.img.bz2	Sep 7 2022	32-bit	Linux 5.10.75	1.9G	Download (Mirror)	acec1d02a37bfbffc9ed025fd718948e
DevTerm A06	DevTerm_A06_v0.2h.img.bz2	Sep 7 2022	64-bit	Linux 5.10.60	1.9G	Download (Mirror)	26f52bfde573479960d8696f407d19b9
DevTerm CM3	DevTerm_CM3_v0.1a.img.bz2	Jan 15 2022	32-bit	Linux 4.19.127	3.0G	Download (Mirror)	bef6c111863f8d2e6ef1cb23be354152
DevTerm CM4	DevTerm_CM4_v0.2b_64bit.img.7z	May 20 20204	64-bit	Linux 5.10.17	1.1G	Download (Mirror)	8b2fdebe254dfa1f5f245cebb85b1e84
DevTerm CM4	DevTerm_CM4_v0.3e_xfce_64bit.img.7z	May 20 20204	64-bit	Linux 5.10.17	1.2G	Download (Mirror)	ab081eabf24ae501dc3f40a9126b7e5a
DevTerm R01	DevTerm_R01_v0.2a.img.bz2	Sep 7 2022	64-bit	Linux 5.4.61	2.8G	Download (Mirror)	49aa472a6e4d81a48e0a1a26436f02c2

DevTerm_CM4_v0.3e_xfce_64bit.img.7z (based on RPI-lite with xfce)
This version is optimized for immersive writing and comes pre-installed with Obsidian.

Images mirror

• Community-driven download mirror: http://dl.clockworkpi.io

After downloading the files, you will need to extract or decompress them. Please keep in mind that MacOS 11.6 or a higher version is required to extract 7z files.

To flash the OS image, you can use the following tools:

• For Windows and macOS users, Etcher can be used to flash the image.
• Linux users can employ the "dd" command to flash the image.

To learn how to create an image, please refer to our Wiki.

DevTerm Keyboard Firmware

DevTerm keyboard firmware flash program available. You can download it from this link: DevTerm Keyboard Firmware Flash Program.

Here's how you can flash the firmware on DevTerm(A06 or CM4) or a PC running Ubuntu 22.04:

1. Download the devterm_keyboard_flash.tar.gz file.
2. Extract the contents of the archive: tar zxvf devterm_keyboard_flash.tar.gz.
3. Install the required package using the following command: sudo apt install -y dfu-util.
4. Navigate to the extracted directory: cd devterm_keyboard_flash.
5. Execute the flash script with root privileges: sudo ./flash.sh.
6. If everything goes well, you will see a progress bar indicating the flashing process.
7. If any issues occur or the keyboard loses control (which is unlikely), simply reboot DevTerm to resolve it.
8. Rest assured that this flash program will not brick your keyboard.

Thermal Printer Testing Commands

• How to print "Hello World".
  echo "hello world\n\n\n\n\n\n\n\n\n\n" > /tmp/DEVTERM_PRINTER_IN

• How to print a self test page.
  echo -en "\x12\x54" > /tmp/DEVTERM_PRINTER_IN

• How to print a text file.
  curl -L https://github.com/clockworkpi/DevTerm/raw/main/README.md | tee > /tmp/DEVTERM_PRINTER_IN

• Learning more...

Assembly guidelines

• Assembly guidelines

Schematic

• DevTerm A06 core mainboard v3.14 schematic
• DevTerm R01 core mainboard v3.14 schematic
• Mainboard v3.14 schematic
• Mainboard v3.14-V5 schematic
• DevTerm keyboard schematic
• DevTerm keyboard trackball schematic
• DevTerm Ext schematic
• DevTerm battery schematic
• CM4 adapter schematic
• Learning more...

Gearbox

A04

Gearbox is a script tool used to adjust the A04 CPU frequency.
you can get it by running

sudo apt update 
sudo apt install -y devterm-gearbox-a04

you can run devterm-a04-gearbox to see the current core status.

Current Status:
+-----------------------------------+
|            Cortex-A53             |
+--------+--------+--------+--------+
| CPU 0  | CPU 1  | CPU 2  | CPU 3  |
+--------+--------+--------+--------+
|1320Mhz |1320Mhz |  OFF   |  OFF   |
+--------+--------+--------+--------+
CPU Governor: ondemand

Run sudo devterm-a04-gearbox -s [GEAR] to set gear, GEAR would be 1,2,3,4,5

There are 5 gears in gearbox

               1 for simple console tasks with long battery life.
               2 for simple writing tasks with long battery life.
               3 for most 2D games and emulators.
               4 for playing videos and 3D games,browsing websites.
               5 for performance-first tasks.

A06

Gearbox is a script tool used to adjust the big.LITTLE architecture of the A06 chip.
you can get it by running

sudo apt update 
sudo apt install -y devterm-gearbox-a06

In latest os image of A06, default Gearbox is set to use 4 LITTLE core with 816Mhz,GPU at 400Mhz

you can run a06-gearbox to see the current core status.

Current Status:
+-----------------------------------+-----------------+-----------+
|            Cortex-A53             |   Cortex-A72    | Mali-T860 |
+--------+--------+--------+--------+--------+--------+-----------+
| CPU 0  | CPU 1  | CPU 2  | CPU 3  | CPU 4  | CPU 5  |    GPU    |
+--------+--------+--------+--------+--------+--------+-----------+
| 816Mhz | 816Mhz | 816Mhz | 816Mhz |  OFF   |  OFF   |   400MHz  |
+--------+--------+--------+--------+--------+--------+-----------+
CPU Governor: schedutil    GPU Governor: simple_ondemand

Run sudo a06-gearbox -s [GEAR] to set gear,GEAR would be 1,2,3,4,5,6

There are 6 gears in gearbox

               1 for simple writing tasks with long battery life.
               2 for browsing most websites with long battery life.
               3 for most 2D games and emulators.
               4 for playing videos and 3D games.
               5 for performance-first tasks.
               6 for max performance, max power (usage).

Community

Please visit our Github Wiki and https://forum.clockworkpi.com for more information.