E-Paper Development Kit - Revision history

Wikiadmin at 16:04, 16 September 2026

2026-09-16T16:04:54Z

← Older revision		Revision as of 00:04, 17 September 2026
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	\|usage=[[File:4 2 inch epaper-800-600-3.jpg\|center\|thumb\|600x600px]]		\|usage=[[File:4 2 inch epaper-800-600-3.jpg\|center\|thumb\|600x600px]]
	[[File:4 2 inch e-paper-1000-5.jpg\|center\|thumb\|1000x1000px]]		[[File:4 2 inch e-paper-1000-5.jpg\|center\|thumb\|1000x1000px]]
	\|faq=Q: What communication interface does this 4.2‑inch e‑paper screen support?		\|faq==== <span style="color: rgb(52, 176, 176);">Q: What communication interface does this 4.2‑inch e‑paper screen support?</span> ===

	A: It adopts SPI interface. The main controller can send image data and control the screen via SPI bus for easy development.		A: It adopts SPI interface. The main controller can send image data and control the screen via SPI bus for easy development.

			=== <span style="color: rgb(52, 176, 176);">Q: What is the refresh speed of the screen? Will there be ghosting issues?</span> ===
	Q: What is the refresh speed of the screen? Will there be ghosting issues?

	A: Full‑screen refresh takes 20 seconds, and fast refresh takes 12 seconds. Due to the characteristics of 4‑color e‑paper, slight ghosting may occur in fast‑refresh mode, which can be eliminated by performing one full refresh.		A: Full‑screen refresh takes 20 seconds, and fast refresh takes 12 seconds. Due to the characteristics of 4‑color e‑paper, slight ghosting may occur in fast‑refresh mode, which can be eliminated by performing one full refresh.

			=== <span style="color: rgb(52, 176, 176);">Q: What colors can this e‑paper screen display? Does it support color gradients?</span> ===
	Q: What colors can this e‑paper screen display? Does it support color gradients?

	A: It only supports four fixed display colors: black, white, red and yellow. It does not support color gradients or grayscale effects. Image materials need to be pre‑processed into these four colors before sending to the screen.		A: It only supports four fixed display colors: black, white, red and yellow. It does not support color gradients or grayscale effects. Image materials need to be pre‑processed into these four colors before sending to the screen.
	\|dl1Type=Demo		\|dl1Type=Demo

Wikiadmin at 13:24, 23 August 2026

2026-08-23T13:24:47Z

← Older revision		Revision as of 21:24, 23 August 2026
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	\|dl3Type=Document		\|dl3Type=Document
	\|dl3Name=DEPG0420RYF668F38-V2.0.pdf		\|dl3Name=DEPG0420RYF668F38-V2.0.pdf
			\|dl3File=DEPG0420RYF668F38-V2.0.pdf
	\|displayMode={{{displayMode\|详情}}}		\|displayMode={{{displayMode\|详情}}}
	\|cardPage={{{cardPage\|{{PAGENAME}}}}}		\|cardPage={{{cardPage\|{{PAGENAME}}}}}

Wikiadmin at 13:24, 23 August 2026

2026-08-23T13:24:06Z

← Older revision		Revision as of 21:24, 23 August 2026
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	\|dl1Name=4.2 inch E-paper(BWRY) ESP32.zip		\|dl1Name=4.2 inch E-paper(BWRY) ESP32.zip
	\|dl1File=4.2 inch E-paper(BWRY) ESP32.zip		\|dl1File=4.2 inch E-paper(BWRY) ESP32.zip
			\|dl3Type=Document
			\|dl3Name=DEPG0420RYF668F38-V2.0.pdf
	\|displayMode={{{displayMode\|详情}}}		\|displayMode={{{displayMode\|详情}}}
	\|cardPage={{{cardPage\|{{PAGENAME}}}}}		\|cardPage={{{cardPage\|{{PAGENAME}}}}}

Wikiadmin at 13:21, 23 August 2026

2026-08-23T13:21:24Z

← Older revision		Revision as of 21:21, 23 August 2026
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	6. Image retention after power off, content remains displayed without power.		6. Image retention after power off, content remains displayed without power.

			7. Perfect for making digital photo albums.
	\|specs={{{!}} class="wikitable"		\|specs={{{!}} class="wikitable"
	{{!}}+		{{!}}+

Wikiadmin at 13:19, 23 August 2026

2026-08-23T13:19:53Z

@@ Line 7: / Line 7: @@
 |image2=4 2 inch epaper-800-600-2.jpg
 |intro=JD79668, SPI
 |specs={{{!}} class="wikitable"
 {{!}}+

Wikiadmin at 13:14, 23 August 2026

2026-08-23T13:14:16Z

@@ Line 75: / Line 75: @@
 |usage=[[File:4 2 inch epaper-800-600-3.jpg|center|thumb|600x600px]]
 [[File:4 2 inch e-paper-1000-5.jpg|center|thumb|1000x1000px]]
-|faq=?
+|faq=Q: What communication interface does this 4.2‑inch e‑paper screen support?
 |dl1Type=Demo
 |dl1Name=4.2 inch E-paper(BWRY) ESP32.zip

Wikiadmin at 13:09, 23 August 2026

2026-08-23T13:09:25Z

@@ Line 7: / Line 7: @@
 |image2=4 2 inch epaper-800-600-2.jpg
 |intro=JD79668, SPI
 |hardware=1. Compatible with ESP8266, ESP32, STM32 and Arduino series motherboards, connected through an efficient SPI interface, and accompanied by detailed technical documentation and operation manuals to simplify the development process.

Wikiadmin at 10:36, 23 August 2026

2026-08-23T10:36:06Z

← Older revision		Revision as of 18:36, 23 August 2026
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	\|usage=[[File:4 2 inch epaper-800-600-3.jpg\|center\|thumb\|600x600px]]		\|usage=[[File:4 2 inch epaper-800-600-3.jpg\|center\|thumb\|600x600px]]
	[[File:4 2 inch e-paper-1000-5.jpg\|center\|thumb\|1000x1000px]]		[[File:4 2 inch e-paper-1000-5.jpg\|center\|thumb\|1000x1000px]]
			\|faq=?
	\|dl1Type=Demo		\|dl1Type=Demo
	\|dl1Name=4.2 inch E-paper(BWRY) ESP32.zip		\|dl1Name=4.2 inch E-paper(BWRY) ESP32.zip

Wikiadmin at 10:35, 23 August 2026

2026-08-23T10:35:43Z

← Older revision		Revision as of 18:35, 23 August 2026
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	\|usage=[[File:4 2 inch epaper-800-600-3.jpg\|center\|thumb\|600x600px]]		\|usage=[[File:4 2 inch epaper-800-600-3.jpg\|center\|thumb\|600x600px]]
	[[File:4 2 inch e-paper-1000-5.jpg\|center\|thumb\|1000x1000px]]		[[File:4 2 inch e-paper-1000-5.jpg\|center\|thumb\|1000x1000px]]
	~~\|faq=2222~~
	\|dl1Type=Demo		\|dl1Type=Demo
	\|dl1Name=4.2 inch E-paper(BWRY) ESP32.zip		\|dl1Name=4.2 inch E-paper(BWRY) ESP32.zip

Wikiadmin at 10:35, 23 August 2026

2026-08-23T10:35:15Z

← Older revision		Revision as of 18:35, 23 August 2026
Line 16:		Line 16:
	\|usage=[[File:4 2 inch epaper-800-600-3.jpg\|center\|thumb\|600x600px]]		\|usage=[[File:4 2 inch epaper-800-600-3.jpg\|center\|thumb\|600x600px]]
	[[File:4 2 inch e-paper-1000-5.jpg\|center\|thumb\|1000x1000px]]		[[File:4 2 inch e-paper-1000-5.jpg\|center\|thumb\|1000x1000px]]
			\|faq=2222
	\|dl1Type=Demo		\|dl1Type=Demo
	\|dl1Name=4.2 inch E-paper(BWRY) ESP32.zip		\|dl1Name=4.2 inch E-paper(BWRY) ESP32.zip