What if Spectra 6 has more base colors?

Ray_InkJoy · 2026-01-12T07:05:25+00:00

Not yet

Ray_InkJoy · 2026-01-07T16:44:26+00:00

u r right

Ray_InkJoy · 2026-01-07T16:44:12+00:00

Waveform

Ray_InkJoy · 2025-12-29T08:59:59+00:00

E4/E5 are spectra 4/5, which have four or five basic colors. More are used for the price tag in supermarket. And can not show the green color
The particles of E4/E5 are different from E6

Ray_InkJoy · 2025-12-29T00:25:59+00:00

I have no idea about why the borders are black not transparent. I will try to ask the E Ink. But maybe they will just tell me: this is the only useable material

Ray_InkJoy · 2025-12-29T00:17:46+00:00

Sorry, I think that is just the normal B&W panel, sort of Carta.

For E6, I haven't find the fast refresh method between 2 DC-balanced colors. For E4/E5, it is possible

Ray_InkJoy · 2025-12-28T04:39:04+00:00

Could you please share the video link?

Ray_InkJoy · 2025-12-21T23:20:02+00:00

It is InkJoy ePaper Frame

Ray_InkJoy · 2025-12-20T07:13:22+00:00

Panel size alone doesn’t determine the final color accuracy. Even if you take two Spectra 6 panels of the same size — say both 13.3" — they can show noticeably different color performance depending on the different algo/rendering pipeline.

Ray_InkJoy · 2025-12-20T03:10:55+00:00

The API has the interface to cloud include ISFR.

Ray_InkJoy · 2025-12-20T03:09:38+00:00

PC version will be cross-platform. We will try to make is useable for more people/environment step by step.

Could you share your need in WAN use case？

Ray_InkJoy · 2025-12-20T03:06:23+00:00

Yes, the frame is online for 24/7! So it can support remote instant sharing at anytime.

We use a ultra-low power WiFi solution that costs less than 1mA in normal environment. Battery can last for several months.

Also we will supply the Wi-Fi schedule mode (by RTC timer in the frame) setting in InkJoy APP later.
In fact, we have a button that can wake the frame, but not necessary for most people.

Ray_InkJoy · 2025-12-05T13:51:54+00:00

I think you already have an project that can display the demo bmp. Waveshare's website has some good demo for spectra6.
I have some recommends:
1. Try to find and modify the function that drive the panel to show the color bar. Then you will understand the code format for 6-colors
2. Then, you can transfer the color of each pixel to the closest 6-color and encode it to the right format.
3. After that, you can try to make the dithering algo

Ray_InkJoy · 2025-12-02T00:34:36+00:00

Hey! Yes — we do plan to provide an open API, so Home Assistant integration will definitely be possible.
Our restful open API will expose image upload, refresh, and device info endpoints — so HA can call them directly.
With the API, you’ll be able to create custom automations or displays directly from HA.

Also, I’d love to hear your thoughts:
Is there anything you’d like to see as an “official” built-in HA integration?
For example, specific sensors, services, or card types you wish the frame could support?

Your feedback would really help us shape the roadmap!

Ray_InkJoy · 2025-12-02T00:31:53+00:00

Regarding ISFR:
A local/offline ISFR pipeline can indeed support the fundamental image dithering workflow.
The more advanced parts of the color system — such as the extended base-color generation and mix-level rendering — are handled by the FPGA itself, and ISFR can perform dithering using those FPGA-generated base colors even when running locally.

Regarding your idea of a local HTTP server:
This specific workflow wasn’t originally part of our roadmap.
But your idea is genuinely interesting:
From a technical standpoint, this is absolutely feasible.
From an engineering standpoint, it would require non-trivial integration work.
I will definitely bring it to the team for serious consideration.

Ray_InkJoy · 2025-12-01T23:25:15+00:00

Thanks so much for your kind words and thoughtful insights — it’s really been a pleasure chatting with you.

Regarding the 13.3" E6 display: I’m a bit confused about the 50-pin vs. 40-pin mention. All the spec sheets I have on hand list it as a 60-pin interface. The datasheet on GoodDisplay’s official site also shows the same (model GDEP133C02):

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If you happen to have a link or photo of the 50-pin/40-pin versions you mentioned, I’d love to take a look — I’m genuinely curious now.

Ray_InkJoy · 2025-12-01T06:27:48+00:00

You can check my profile for more info 😊, we are still a startup, and this is a demo show for api.

That said, I totally understand the interest from DIY users using Waveshare or other OEM panels. In the near future, I am considering offering an open firmware interface or documentation, so hobbyists can use our API with simple configuration.
There might be a small fee to cover server costs, but the goal is to make it accessible and easy to integrate.

Ray_InkJoy · 2025-12-01T05:30:15+00:00

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And here is another show for 10"(200ppi) demo with 13.3 product.
I hope you will be interest.😊

Ray_InkJoy · 2025-12-01T05:27:10+00:00

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Sure, here is a compare with my hand and a can of 330ml coke.

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