4.2 inch E-Paper 4c Display - Revision history

Maintenance script: Maintenance script moved page 4.2 inch E-Paper 3c Display to 4.2 inch E-Paper 4c Display: 按要求将 E-Paper 3c 改为 4c

2026-09-18T14:34:00Z

Maintenance script moved page 4.2 inch E-Paper 3c Display to 4.2 inch E-Paper 4c Display: 按要求将 E-Paper 3c 改为 4c

← Older revision		Revision as of 22:34, 18 September 2026
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Maintenance script: Maintenance script moved page E-Paper Development Kit to 4.2 inch E-Paper 3c Display: 按要求批量更名 E-Paper/OLED 产品页

2026-09-18T14:27:54Z

Maintenance script moved page E-Paper Development Kit to 4.2 inch E-Paper 3c Display: 按要求批量更名 E-Paper/OLED 产品页

← Older revision		Revision as of 22:27, 18 September 2026
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Maintenance script: 批量更新指向已更名产品页的引用

2026-09-18T14:15:07Z

批量更新指向已更名产品页的引用

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	2. You can use the following dedicated test board to quickly and conveniently verify our program demo, effectively providing development progress.		2. You can use the following dedicated test board to quickly and conveniently verify our program demo, effectively providing development progress.

	<big>(1) <u>[[~~多接口嵌入式开发板~~\|ESP8266 E-paper Development Kit]]</u></big>		<big>(1) <u>[[ESP8266_D1_Board\|ESP8266 E-paper Development Kit]]</u></big>

	<big>(2) [[ESP32 Arduino Main Board\|<u>ESP32 E-paper Development Kit</u>]]</big>		<big>(2) [[ESP32 Arduino Main Board\|<u>ESP32 E-paper Development Kit</u>]]</big>

Maintenance script: 更新指向已更名页面 ESP32 Arduino Main Board 的引用

2026-09-18T13:45:15Z

更新指向已更名页面 ESP32 Arduino Main Board 的引用

← Older revision		Revision as of 21:45, 18 September 2026
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	<big>(1) <u>[[多接口嵌入式开发板\|ESP8266 E-paper Development Kit]]</u></big>		<big>(1) <u>[[多接口嵌入式开发板\|ESP8266 E-paper Development Kit]]</u></big>

	<big>(2) [[~~2.8英寸~~ Arduino ~~显示扩展板~~\|<u>ESP32 E-paper Development Kit</u>]]</big>		<big>(2) [[ESP32 Arduino Main Board\|<u>ESP32 E-paper Development Kit</u>]]</big>
	\|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]]

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

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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

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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