2.9 inch Label Board bw - Revision history

Maintenance script: Maintenance script moved page Arduino I/O Expansion Board to 2.9 inch Label Board bw: 按要求将产品页更名为 2.9_inch_Label_Board_bw

2026-09-18T13:55:16Z

Maintenance script moved page Arduino I/O Expansion Board to 2.9 inch Label Board bw: 按要求将产品页更名为 2.9_inch_Label_Board_bw

← Older revision		Revision as of 21:55, 18 September 2026
(No difference)

Wikiadmin at 16:10, 16 September 2026

2026-09-16T16:10:35Z

Wikiadmin at 08:24, 15 September 2026

2026-09-15T08:24:12Z

← Older revision		Revision as of 16:24, 15 September 2026
Line 230:		Line 230:
	3. Cards larger than 32 GB are not recommended — they can exhaust ESP32 resources.		3. Cards larger than 32 GB are not recommended — they can exhaust ESP32 resources.
	\|dl1Type=Demo		\|dl1Type=Demo
	\|dl1Name=~~A32 Label 2 9 bw V30~~.zip		\|dl1Name=A32_Label_2_9_bw_V40.zip
	\|dl1File=A32 Label 2 9 bw ~~V30~~.zip		\|dl1File=A32 Label 2 9 bw V40.zip
	\|dl2Type=Document		\|dl2Type=Document
	\|dl2Name=A32 Label 2 9 bw User Manual EN v1.0.pdf		\|dl2Name=A32 Label 2 9 bw User Manual EN v1.0.pdf

Wikiadmin at 13:54, 4 September 2026

2026-09-04T13:54:57Z

← Older revision		Revision as of 21:54, 4 September 2026
Line 1:		Line 1:
	{{ProductInfo		{{ProductInfo
	\|title=2.9 inch black and white ~~electronic~~ paper shelf label board		\|title=2.9 inch black and white E-paper shelf label board
	\|model=2.9 inch Label Board(BW)		\|model=2.9 inch Label Board(BW)
	\|status=Published		\|status=Published

Wikiadmin at 12:06, 2 September 2026

2026-09-02T12:06:35Z

← Older revision		Revision as of 20:06, 2 September 2026
Line 11:		Line 11:
	2. The e-paper display retains its image even when power is removed. Energy is consumed only while refreshing; a static image can persist for years. This makes the A32 ideal for supermarkets, convenience stores and warehouses where content stays on display for long periods but changes only occasionally.		2. The e-paper display retains its image even when power is removed. Energy is consumed only while refreshing; a static image can persist for years. This makes the A32 ideal for supermarkets, convenience stores and warehouses where content stays on display for long periods but changes only occasionally.
	\|videoTitle=2.9 inch E-paper Label Board (BW)		\|videoTitle=2.9 inch E-paper Label Board (BW)
	\|videoURL=https://youtu.be/zyRy-vukrjc		\|videoURL=https://youtu.be/zyRy-vukrjc?si=8mBy78nFXLx9apk7
	\|specs={{{!}} class="wikitable"		\|specs={{{!}} class="wikitable"
	{{!}}+		{{!}}+

Wikiadmin at 07:55, 2 September 2026

2026-09-02T07:55:32Z

← Older revision		Revision as of 15:55, 2 September 2026
Line 10:		Line 10:

	2. The e-paper display retains its image even when power is removed. Energy is consumed only while refreshing; a static image can persist for years. This makes the A32 ideal for supermarkets, convenience stores and warehouses where content stays on display for long periods but changes only occasionally.		2. The e-paper display retains its image even when power is removed. Energy is consumed only while refreshing; a static image can persist for years. This makes the A32 ideal for supermarkets, convenience stores and warehouses where content stays on display for long periods but changes only occasionally.
			\|videoTitle=2.9 inch E-paper Label Board (BW)
			\|videoURL=https://youtu.be/zyRy-vukrjc
	\|specs={{{!}} class="wikitable"		\|specs={{{!}} class="wikitable"
	{{!}}+		{{!}}+

Wikiadmin at 08:08, 1 September 2026

2026-09-01T08:08:20Z

← Older revision		Revision as of 16:08, 1 September 2026
Line 230:		Line 230:
	\|dl1Name=A32 Label 2 9 bw V30.zip		\|dl1Name=A32 Label 2 9 bw V30.zip
	\|dl1File=A32 Label 2 9 bw V30.zip		\|dl1File=A32 Label 2 9 bw V30.zip
			\|dl2Type=Document
			\|dl2Name=A32 Label 2 9 bw User Manual EN v1.0.pdf
			\|dl2File=A32 Label 2 9 bw User Manual EN v1.0.pdf
			\|dl3Type=Document
			\|dl3Name=A32 Label 2 9 bw User Manual RU v1.0.pdf
			\|dl3File=A32 Label 2 9 bw User Manual RU v1.0.pdf
			\|dl4Type=Document
			\|dl4Name=Label 2 9 Inch SchDoc V20.pdf
			\|dl4File=Label 2 9 Inch SchDoc V20.pdf
	\|displayMode={{{displayMode\|详情}}}		\|displayMode={{{displayMode\|详情}}}
	\|cardPage={{{cardPage\|{{PAGENAME}}}}}		\|cardPage={{{cardPage\|{{PAGENAME}}}}}

Wikiadmin at 07:58, 1 September 2026

2026-09-01T07:58:22Z

@@ Line 202: / Line 202: @@
 The web editor home page opens.
 |usage=[[File:2.9inch-photo-600-300-1.jpg|center|thumb|600x600px]]
-|faq=; What if compilation shows insufficient capacity?
+|faq== <span style="color: rgb(52, 176, 176);">Q1: Cannot connect to the ePaperDisplay WiFi?</span> =
-: Reduce font and bitmap resources, or choose a controller with more capacity.
+. Make sure the board is powered on (PWR LED steady on).
-; What if colors are abnormal?
-: Check driver model, color order, and initialization orientation settings.
+. Make sure your computer/phone does not filter unknown hotspots via random-MAC policies.
 |dl1Type=Demo
 |dl1Name=A32 Label 2 9 bw V30.zip

Wikiadmin at 07:53, 1 September 2026

2026-09-01T07:53:06Z

← Older revision		Revision as of 15:53, 1 September 2026
Line 68:		Line 68:

	= '''<span style="color: rgb(52, 176, 176);">1.2 Installing the Arduino IDE and the ESP32 Core</span>''' =		= '''<span style="color: rgb(52, 176, 176);">1.2 Installing the Arduino IDE and the ESP32 Core</span>''' =
	~~Step 1 — Install the Arduino IDE~~

			=== Step 1 — Install the Arduino IDE ===
	Download the Arduino IDE 2.x installer for your operating system from the official website and follow the wizard.		Download the Arduino IDE 2.x installer for your operating system from the official website and follow the wizard.

	Step 2 — Add the ESP32 Board Manager URL		=== Step 2 — Add the ESP32 Board Manager URL ===

	In the Arduino IDE, open the menu:		In the Arduino IDE, open the menu:

Line 84:		Line 83:
	Click OK to save.		Click OK to save.

	Step 3 — Install the ESP32 core		=== Step 3 — Install the ESP32 core ===

	Navigate to:		Navigate to:

Line 94:		Line 92:
	<span style="color: rgb(231, 76, 60);">Note Depending on your network, the download may take 3–10 minutes. Please be patient.</span>		<span style="color: rgb(231, 76, 60);">Note Depending on your network, the download may take 3–10 minutes. Please be patient.</span>

	Step 4 — Install the CH340 driver (Windows only)		=== Step 4 — Install the CH340 driver (Windows only) ===

	Download the CH340 driver from the WCH official website or any dev-board vendor's download page, install it, and reboot the computer. On macOS, if a "System extension blocked" prompt appears, go to System Settings → Privacy & Security and allow it.		Download the CH340 driver from the WCH official website or any dev-board vendor's download page, install it, and reboot the computer. On macOS, if a "System extension blocked" prompt appears, go to System Settings → Privacy & Security and allow it.

Line 114:		Line 111:
	The IDE automatically picks up the other .h files in the project folder. The expected layout is:		The IDE automatically picks up the other .h files in the project folder. The expected layout is:
	[[File:Wki-2.jpg\|center\|thumb\|1097x1097px]]		[[File:Wki-2.jpg\|center\|thumb\|1097x1097px]]
	~~1.5 Configuring the Board~~

			= <span style="color: rgb(52, 176, 176);">1.5 Configuring the Board</span> =
	Open the Tools menu and configure the following options:		Open the Tools menu and configure the following options:
	{{{!}} class="wikitable"		{{{!}} class="wikitable"
Line 155:		Line 152:

	= <span style="color: rgb(52, 176, 176);">1.7 Flashing (Upload)</span> =		= <span style="color: rgb(52, 176, 176);">1.7 Flashing (Upload)</span> =
	~~Step 1 — Enter download mode~~

			=== Step 1 — Enter download mode ===
	The A32 board can usually be flashed directly. If you see "A fatal error occurred: Failed to connect to ESP32...", enter download mode manually:		The A32 board can usually be flashed directly. If you see "A fatal error occurred: Failed to connect to ESP32...", enter download mode manually:

Line 173:		Line 170:
	The ESP32 is now in serial download mode.		The ESP32 is now in serial download mode.

	Step 2 — Upload the firmware		=== Step 2 — Upload the firmware ===

	Click the → (Upload) button in the toolbar, or press Ctrl + U (macOS: Cmd + U). The console shows the		Click the → (Upload) button in the toolbar, or press Ctrl + U (macOS: Cmd + U). The console shows the

Line 181:		Line 177:
	Flashing succeeded and the board reboots automatically.		Flashing succeeded and the board reboots automatically.

	Step 3 — Check the serial log		=== Step 3 — Check the serial log ===

	After flashing, open Tools → Serial Monitor (Ctrl + Shift + M) and set the baud rate to 115200. On a successful boot you should see a log similar to:		After flashing, open Tools → Serial Monitor (Ctrl + Shift + M) and set the baud rate to 115200. On a successful boot you should see a log similar to:
	[[File:Wki-4.jpg\|center\|thumb\|1097x1097px]]		[[File:Wki-4.jpg\|center\|thumb\|1097x1097px]]
Line 188:		Line 183:

	= <span style="color: rgb(52, 176, 176);">1.8 Connecting to the Device</span> =		= <span style="color: rgb(52, 176, 176);">1.8 Connecting to the Device</span> =
	Step 1 — Join the WiFi access point
			=== Step 1 — Join the WiFi access point ===
	{{{!}} class="wikitable"		{{{!}} class="wikitable"
	{{!}}+		{{!}}+
Line 201:		Line 197:
	<span style="color: rgb(231, 76, 60);">Note On first connection, your device may warn that "This network has no Internet access". Choose Keep using this network / Stay connected — this is expected, as the ESP32 does not provide Internet access.</span>		<span style="color: rgb(231, 76, 60);">Note On first connection, your device may warn that "This network has no Internet access". Choose Keep using this network / Stay connected — this is expected, as the ESP32 does not provide Internet access.</span>

	Step 2 — Open the web console		=== Step 2 — Open the web console ===

	Once connected, enter the following address in your browser (Chrome / Safari / Edge strongly recommended): http://192.168.4.1		Once connected, enter the following address in your browser (Chrome / Safari / Edge strongly recommended): http://192.168.4.1

Wikiadmin at 07:50, 1 September 2026

2026-09-01T07:50:23Z

@@ Line 80: / Line 80: @@
 Paste the following URL into the "Additional boards manager URLs" field:
 [[File:Wki-1.jpg|center|thumb|1097x1097px]]
 |usage=[[File:2.9inch-photo-600-300-1.jpg|center|thumb|600x600px]]
 |faq=; What if compilation shows insufficient capacity?

← Older revision		Revision as of 00:10, 17 September 2026
Line 47:		Line 47:
	{{!}}USB-C, 5 V		{{!}}USB-C, 5 V
	{{!}}}		{{!}}}
	\|hardware== '''<span style="color: rgb(52, 176, 176);">1.1 Preparation</span>''' =		\|hardware==== '''<span style="color: rgb(52, 176, 176);">1.1 Preparation</span>''' ===

	=== '''1.1.1 Hardware Checklist''' ===		=== '''1.1.1 Hardware Checklist''' ===
Line 69:		Line 69:
	○ Built-in WiFi, WebServer, SPI, SD		○ Built-in WiFi, WebServer, SPI, SD

	= '''<span style="color: rgb(52, 176, 176);">1.2 Installing the Arduino IDE and the ESP32 Core</span>''' =		=== '''<span style="color: rgb(52, 176, 176);">1.2 Installing the Arduino IDE and the ESP32 Core</span>''' ===

	=== Step 1 — Install the Arduino IDE ===		=== Step 1 — Install the Arduino IDE ===
Line 99:		Line 99:
	After installation, connect the board via USB-C. A new USB-SERIAL CH340 (COMx) entry under Device Manager → Ports (COM & LPT) confirms the driver works.		After installation, connect the board via USB-C. A new USB-SERIAL CH340 (COMx) entry under Device Manager → Ports (COM & LPT) confirms the driver works.

	= <span style="color: rgb(52, 176, 176);">1.3 Installing the GxEPD2 Library</span> =		=== <span style="color: rgb(52, 176, 176);">1.3 Installing the GxEPD2 Library</span> ===
	Navigate to:		Navigate to:

Line 106:		Line 106:
	Type GxEPD2 in the search box, find "GxEPD2" by Jean-Marc Zingg, and click Install.		Type GxEPD2 in the search box, find "GxEPD2" by Jean-Marc Zingg, and click Install.

	= <span style="color: rgb(52, 176, 176);">1.4 Opening the Project</span> =		=== <span style="color: rgb(52, 176, 176);">1.4 Opening the Project</span> ===
	Copy the entire A32_Label_2_9_bw_V30/ directory to any local path (avoid non-ASCII characters in the path), then in the Arduino IDE:		Copy the entire A32_Label_2_9_bw_V30/ directory to any local path (avoid non-ASCII characters in the path), then in the Arduino IDE:

Line 114:		Line 114:
	[[File:Wki-2.jpg\|center\|thumb\|1097x1097px]]		[[File:Wki-2.jpg\|center\|thumb\|1097x1097px]]

	= <span style="color: rgb(52, 176, 176);">1.5 Configuring the Board</span> =		=== <span style="color: rgb(52, 176, 176);">1.5 Configuring the Board</span> ===
	Open the Tools menu and configure the following options:		Open the Tools menu and configure the following options:
	{{{!}} class="wikitable"		{{{!}} class="wikitable"
Line 146:		Line 146:
	{{!}}}		{{!}}}

	= <span style="color: rgb(52, 176, 176);">1.6 Compiling (Verify)</span> =		=== <span style="color: rgb(52, 176, 176);">1.6 Compiling (Verify)</span> ===
	Click the ✔ (Verify) button in the toolbar, or press Ctrl + R (macOS: Cmd + R).		Click the ✔ (Verify) button in the toolbar, or press Ctrl + R (macOS: Cmd + R).

Line 153:		Line 153:
	"Done compiling." together with "Sketch uses XXXXX bytes (XX%) of program storage space" in the console means the build succeeded.		"Done compiling." together with "Sketch uses XXXXX bytes (XX%) of program storage space" in the console means the build succeeded.

	= <span style="color: rgb(52, 176, 176);">1.7 Flashing (Upload)</span> =		=== <span style="color: rgb(52, 176, 176);">1.7 Flashing (Upload)</span> ===

	=== Step 1 — Enter download mode ===		=== Step 1 — Enter download mode ===
Line 184:		Line 184:
	The e-paper shows a centered on-screen hint containing the WiFi name, the password and the management IP address.		The e-paper shows a centered on-screen hint containing the WiFi name, the password and the management IP address.

	= <span style="color: rgb(52, 176, 176);">1.8 Connecting to the Device</span> =		=== <span style="color: rgb(52, 176, 176);">1.8 Connecting to the Device</span> ===

	=== Step 1 — Join the WiFi access point ===		=== Step 1 — Join the WiFi access point ===
Line 204:		Line 204:
	The web editor home page opens.		The web editor home page opens.
	\|usage=[[File:2.9inch-photo-600-300-1.jpg\|center\|thumb\|600x600px]]		\|usage=[[File:2.9inch-photo-600-300-1.jpg\|center\|thumb\|600x600px]]
	\|faq== <span style="color: rgb(52, 176, 176);">Q1: Cannot connect to the ePaperDisplay WiFi?</span> =		\|faq==== <span style="color: rgb(52, 176, 176);">Q1: Cannot connect to the ePaperDisplay WiFi?</span> ===
	1. Make sure the board is powered on (PWR LED steady on).		1. Make sure the board is powered on (PWR LED steady on).

Line 213:		Line 213:
	4. If it still fails, press the RST button to reboot the board.		4. If it still fails, press the RST button to reboot the board.

	= <span style="color: rgb(52, 176, 176);">Q2: WiFi connects, but 192.168.4.1 won't open?</span> =		=== <span style="color: rgb(52, 176, 176);">Q2: WiFi connects, but 192.168.4.1 won't open?</span> ===
	1. Check that the address is exactly <nowiki>http://192.168.4.1</nowiki> (no https, no extra port number).		1. Check that the address is exactly <nowiki>http://192.168.4.1</nowiki> (no https, no extra port number).

Line 220:		Line 220:
	3. Try another browser (Chrome / Safari / Edge recommended).		3. Try another browser (Chrome / Safari / Edge recommended).

	= <span style="color: rgb(52, 176, 176);">Q3: The screen looks pale after a refresh, with ghosting?</span> =		=== <span style="color: rgb(52, 176, 176);">Q3: The screen looks pale after a refresh, with ghosting?</span> ===
	A small amount of ghosting after the first refresh is normal — it is inherent to how E-Ink works. Refresh again or wait 1–2 minutes and it disappears. If ghosting persists, leave the board unpowered overnight,then power it on again.		A small amount of ghosting after the first refresh is normal — it is inherent to how E-Ink works. Refresh again or wait 1–2 minutes and it disappears. If ghosting persists, leave the board unpowered overnight,then power it on again.

	= <span style="color: rgb(52, 176, 176);">Q4: The TF card shows "TF: unavailable"?</span> =		=== <span style="color: rgb(52, 176, 176);">Q4: The TF card shows "TF: unavailable"?</span> ===
	1. Make sure the card is FAT32 (not exFAT or NTFS).		1. Make sure the card is FAT32 (not exFAT or NTFS).