Free to start · in your browser · Chrome or Edge on desktop
Your marker. Your screen.
Put your name on the boot screen, swap the icons for your own and decide how your CS3 Pro starts up. Set it up in the browser and write it over USB in a few minutes.
Rendered pixel for pixel as the 128×32 OLED shows it.
- Planet Eclipse CS3 Pro
- Firmware 1.71
- OLED 128×32
- USB · WebHID
- Backup before every write
What you can change
01
Boot animation
Four frames of 128×32 pixels: your name, your number, your team logo, or a logo and text in the same frame. Type the text or drop an image and see it on the display before anything is written.
02
Icons
Every icon on the run screens can be redrawn pixel by pixel, replaced by an image or removed for a cleaner screen: sensor, battery, lock, Bluetooth and the rest.
03
Start-up
Show your boot screen on a double-click start too, choose how long it stays (up to 3.2 s) and skip the firmware version screen if you never look at it.
04
Inverted screen
The OLED has one colour, so there is no palette to pick. What you can do is flip it: dark pixels on a lit background, for a look nobody else has.
Also in the tool: your own words for the marker's messages (it can ask something else before it powers off) and your own power-on tune.
Never touched: firing modes, ramping, timing, and the NXL shield the referees check.
How it works
- 01
Connect
Degas the marker, plug the micro-USB cable and hold the power button for three seconds. The site reads the marker and checks it is a firmware it knows.
- 02
Design
A backup of your marker downloads first. Then set up the boot animation, icons and start-up, with a live preview of every screen.
- 03
Write
The site writes your marker, reads everything back and compares it byte for byte. Unplug, power on, done.
Built not to break your marker
- 01
It only changes graphics and start-up
The tool edits a known list of regions: icon bitmaps, the boot screens and four start-up instructions. Everything else is written back exactly as it was read, your settings included.
- 02
Unknown firmware is refused
Before anything is written the marker's firmware is checked against a fingerprint. If it is not an exact match, the site stops and writes nothing.
- 03
The bootloader is never erased
The part of the marker that talks to USB stays as it is. If a write is interrupted, connect again and write your backup.
- 04
Backup first, verify after
You cannot write without downloading the backup. After writing, the whole marker is read back and compared.
What you need
- A Planet Eclipse CS3 Pro on firmware 1.71 (shown on the version screen when you hold the button to power on).
- A micro-USB data cable (the old 5-pin one, not USB-C).
- Chrome or Edge on a Windows, Mac or Linux computer. Phones and Safari cannot talk to USB devices.
- Marker degassed, air system, loader and barrel off, no paint.
- Eclipse E-Portal closed while you use this site.
CS3 Pro · firmware 1.71 · bootloader 3.0.5
Free to start. $11 for everything.
Free
$0
- Boot animation with text, 4 frames, 5 fonts
- Full backup of your marker
- Restore from your backup any time
Pro
$11one time
- Images and logos in the boot animation
- Icon editor: redraw, replace or remove every icon
- Full 4-frame animation at power-on, also on a double-click start
- Hide the version screen
- Inverted screen
- Your own version screen
- Sounds: your own power-on tune and beeps
- Messages: your own words when it powers off
Pro is a one-time payment. You get a licence key by e-mail and paste it in the tool. No subscription.
Start freeQuestions
Can this damage my marker?
The site rewrites the marker's application, the same operation Eclipse's own E-Portal performs when it updates firmware, and it never touches the bootloader. If a write is interrupted the marker will not start until you connect again and write your backup, which the site makes you download first.
Does it change how the marker shoots?
No. Firing modes, ramping, rate of fire, dwell and every other parameter are written back exactly as they were. Only bitmaps and four start-up instructions change.
Is it legal at tournaments?
The tool does not touch firing behaviour or the NXL shield that shows a locked preset. Even so, a marker with modified firmware may be questioned at tech inspection. Keep your backup: restoring the original takes a few minutes.
Which markers work?
Today: Planet Eclipse CS3 Pro on firmware 1.71. Any other model or version is detected and refused before anything is written. More builds will be added as they are verified.
Can I go back to factory?
Yes. Load the backup the site downloaded the first time you connected and write it. Your marker returns to that exact state.
Why no colours?
The CS3 Pro display is a single-colour OLED. Pixels are on or off. You can invert the whole screen, but there is no palette.
Do you store my marker's firmware?
No. Everything happens in your browser. The firmware is read from your marker, changed locally and written back. Nothing is uploaded.
Is this an Eclipse product?
No. PE Customizer is an independent tool by DataPrime. It is not affiliated with or endorsed by Planet Eclipse. E-Portal remains the official way to update your marker.
Made by DataPrime
We build the tools we wanted for our own gear.
DataPrime is a small web studio run by a paintball player. This tool started on our own CS3 Pro. The same idea is live for the CRBN DRV loader.
Make it yours.
Connect your CS3 Pro, see your design on the screen, and write it when you like it.
Customize my marker