Changes in 2be8f57: epaper

				BOM-DAT/diode-dat/2025-08-27-12-53-45.png
			
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				BOM-DAT/diode-dat/diode-dat.md
			
          @@ -12,6 +12,9 @@ brand - [[st-dat]]

           - [[diode-zener-dat]] - [[flyback-diode-dat]]

          +## diode info 

          +

          +![](2025-08-27-12-53-45.png)

           ## Schottky diode

          @@ -98,6 +101,19 @@ https://assets.nexperia.com/documents/data-sheet/BAV99S.pdf

           ![](2025-08-26-18-22-24.png)

          +## To test if a diode is good using a multimeter:

          +

          +- Set the multimeter to diode mode (look for the diode symbol).

          +- Connect the red probe to the anode and the black probe to the cathode.

          +- Read the display:

          +    - A good diode shows a voltage drop (typically 0.5–0.8V for silicon diodes).

          +    - If it shows “OL” or no reading, reverse the probes.

          +    - In reverse, a good diode shows “OL” (open circuit).

          +    - If both directions show 0V or both show “OL”, the diode is faulty.

          +

          +

          +

          +

           ## ref 

           - [[BOM-dat]] - [[mosfet-dat]]

          \ No newline at end of file

				Chip-dat/Nordic-dat/NRF5x-dat/2025-08-27-12-42-58.png
			
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				Chip-dat/Nordic-dat/NRF5x-dat/NRF5x-dat.md
			
          @@ -0,0 +1,27 @@

          +

          +# NRF5x-dat

          +

          +- [[NRF52810-dat]] - [[NRF51822-dat]] - [[NRF52832-dat]] - [[NRF52840-dat]]

          +

          +

          +## APPs 

          +

          +### epaper driver code 

          +

          +The e-paper firmware comes with a web-based host application. You can transfer images to the e-paper display via Bluetooth, or set the display to calendar mode (supports lunar calendar, solar terms, and holiday schedule adjustments).

          +

          +Supported main control chips: nrf51822 / nrf51802 / nrf52811 / nrf52810

          +

          +Supported e-paper drivers: UC8176 / UC8276 / SSD1619 / SSD1683 / JD79668 (black & white / three-color / four-color e-paper displays)

          +

          +Also supports custom mapping of e-paper display pins to the MCU, sleep/wake (NFC / wireless charger), and Bluetooth OTA firmware

          +

          +![](2025-08-27-12-42-58.png)

          +

          +original code - https://github.com/tsl0922/EPD-nRF5

          +

          +folk version - https://github.com/Edragon/EPD-nRF5

          +

          +## ref 

          +

          +- [[nordic-dat]]

          \ No newline at end of file

				Chip-dat/Nordic-dat/nordic-dat.md
			
          @@ -3,13 +3,9 @@

           - [[NRF24L01-dat]]

          -- [[NRF52810-dat]]

          +- [[NRF5x-dat]]

          -- [[NRF51822-dat]]

          -- [[NRF52832-dat]]

          -

          -- [[NRF52840-dat]]

				Chip-dat/chip-dat.md
			
          @@ -58,7 +58,7 @@ from a to z

           - [[raspberry-pi-dat]]

          -- [[Renesas-dat]]

          +- [[Renesas-dat]] - [[DA14585-dat]]

           - [[ST-dat]] - [[STM32-dat]] - [[STM32-HDK-dat]] - [[STM32-SDK-dat]]

				PCB-dat/PCB-design-dat/test-point-dat/test-point-dat.md
			
          @@ -24,3 +24,8 @@ for power supply - [[power-dat]]

           - PREVGL: Negative voltage, often around -15V to -20V.

           - PREVGH: Positive voltage, often around +15V to +20V.

          +VOM 

          +

          +PRE-VGL == -20V

          +

          +PRE-VGH == 20V 

          \ No newline at end of file

				Tech-dat/interactive-dat/display-dat/epaper-dat/epaper-dat.md
			
          @@ -5,10 +5,12 @@

           - [[MPC1091-dat]]

          -## controller 

          +## controller mainly by bluetooth

           - [[TELINK-dat]] - [[da14585-dat]]

          +- [[NRF5x-dat]] - [[nordic-dat]]

          +

           ## working principle 

          @@ -78,13 +80,6 @@ please find demo code in epaper repo above, we have V1, V2, V3 versions, current

          -## SCH 

          -

          -ESP8266 drive 

          -

          -![](2025-08-19-15-06-08.png)

          -

          -![](2025-08-19-15-06-34.png)

           ### BS 

          @@ -247,13 +242,7 @@ l"54

           **RESET**: This pin resets the entire ePaper display controller, putting it into a known default state. It is usually toggled during power-up or before communication to ensure reliable operation.

          -VOM 

          -

          -PRE-VGL 

          -

          -PRE-VGH

          -

          -

          +- [[test-point-dat]]

           ## repo 

          @@ -291,10 +280,26 @@ https://github.com/adafruit/Adafruit_EPD

          -## basic SCH 

          +## SCH 

          +

          +ESP8266 drive 

          +

          +![](2025-08-19-15-06-08.png)

          +

          +![](2025-08-19-15-06-34.png)

          +

          +### basic SCH 

           ![](2025-08-26-20-59-36.png)

          +## driver chip 

          +

          +[[SSD1673A]] 

          +- Holitech,HINK-E0213A01,EINK,2.13,B/W,,250 x 122,SPI,24,SSD1673A,,

          +

          +[[SSD1675B]]

          +- Holitech,HINK-E0213A09,EINK,2.13,B/W,,212 x 104,SPI,24,SSD1675B,,

          +- Holitech,HINK-E0213A07,EINK,2.13,B/W/R,,212 x 104,SPI,24,SSD1675B,,

           ## ref

...	...	@@ -12,6 +12,9 @@ brand - [[st-dat]]
12	12	- [[diode-zener-dat]] - [[flyback-diode-dat]]
13	13
14	14
	15	+## diode info
	16	+
	17	+![](2025-08-27-12-53-45.png)
15	18
16	19	## Schottky diode
17	20
...	...	@@ -98,6 +101,19 @@ https://assets.nexperia.com/documents/data-sheet/BAV99S.pdf
98	101	![](2025-08-26-18-22-24.png)
99	102
100	103
	104	+## To test if a diode is good using a multimeter:
	105	+
	106	+- Set the multimeter to diode mode (look for the diode symbol).
	107	+- Connect the red probe to the anode and the black probe to the cathode.
	108	+- Read the display:
	109	+ - A good diode shows a voltage drop (typically 0.5–0.8V for silicon diodes).
	110	+ - If it shows “OL” or no reading, reverse the probes.
	111	+ - In reverse, a good diode shows “OL” (open circuit).
	112	+ - If both directions show 0V or both show “OL”, the diode is faulty.
	113	+
	114	+
	115	+
	116	+
101	117	## ref
102	118
103	119	- [[BOM-dat]] - [[mosfet-dat]]
...	...	\ No newline at end of file

...	...	@@ -0,0 +1,27 @@
	1	+
	2	+# NRF5x-dat
	3	+
	4	+- [[NRF52810-dat]] - [[NRF51822-dat]] - [[NRF52832-dat]] - [[NRF52840-dat]]
	5	+
	6	+
	7	+## APPs
	8	+
	9	+### epaper driver code
	10	+
	11	+The e-paper firmware comes with a web-based host application. You can transfer images to the e-paper display via Bluetooth, or set the display to calendar mode (supports lunar calendar, solar terms, and holiday schedule adjustments).
	12	+
	13	+Supported main control chips: nrf51822 / nrf51802 / nrf52811 / nrf52810
	14	+
	15	+Supported e-paper drivers: UC8176 / UC8276 / SSD1619 / SSD1683 / JD79668 (black & white / three-color / four-color e-paper displays)
	16	+
	17	+Also supports custom mapping of e-paper display pins to the MCU, sleep/wake (NFC / wireless charger), and Bluetooth OTA firmware
	18	+
	19	+![](2025-08-27-12-42-58.png)
	20	+
	21	+original code - https://github.com/tsl0922/EPD-nRF5
	22	+
	23	+folk version - https://github.com/Edragon/EPD-nRF5
	24	+
	25	+## ref
	26	+
	27	+- [[nordic-dat]]
...	...	\ No newline at end of file

...	...	@@ -3,13 +3,9 @@
3	3
4	4	- [[NRF24L01-dat]]
5	5
6		-- [[NRF52810-dat]]
	6	+- [[NRF5x-dat]]
7	7
8		-- [[NRF51822-dat]]
9	8
10		-- [[NRF52832-dat]]
11		-
12		-- [[NRF52840-dat]]
13	9
14	10
15	11

...	...	@@ -58,7 +58,7 @@ from a to z
58	58
59	59	- [[raspberry-pi-dat]]
60	60
61		-- [[Renesas-dat]]
	61	+- [[Renesas-dat]] - [[DA14585-dat]]
62	62
63	63	- [[ST-dat]] - [[STM32-dat]] - [[STM32-HDK-dat]] - [[STM32-SDK-dat]]
64	64

...	...	@@ -24,3 +24,8 @@ for power supply - [[power-dat]]
24	24	- PREVGL: Negative voltage, often around -15V to -20V.
25	25	- PREVGH: Positive voltage, often around +15V to +20V.
26	26
	27	+VOM
	28	+
	29	+PRE-VGL == -20V
	30	+
	31	+PRE-VGH == 20V
...	...	\ No newline at end of file

...	...	@@ -5,10 +5,12 @@
5	5
6	6	- [[MPC1091-dat]]
7	7
8		-## controller
	8	+## controller mainly by bluetooth
9	9
10	10	- [[TELINK-dat]] - [[da14585-dat]]
11	11
	12	+- [[NRF5x-dat]] - [[nordic-dat]]
	13	+
12	14
13	15	## working principle
14	16
...	...	@@ -78,13 +80,6 @@ please find demo code in epaper repo above, we have V1, V2, V3 versions, current
78	80
79	81
80	82
81		-## SCH
82		-
83		-ESP8266 drive
84		-
85		-![](2025-08-19-15-06-08.png)
86		-
87		-![](2025-08-19-15-06-34.png)
88	83
89	84
90	85	### BS
...	...	@@ -247,13 +242,7 @@ l"54
247	242
248	243	RESET: This pin resets the entire ePaper display controller, putting it into a known default state. It is usually toggled during power-up or before communication to ensure reliable operation.
249	244
250		-VOM
251		-
252		-PRE-VGL
253		-
254		-PRE-VGH
255		-
256		-
	245	+- [[test-point-dat]]
257	246
258	247
259	248	## repo
...	...	@@ -291,10 +280,26 @@ https://github.com/adafruit/Adafruit_EPD
291	280
292	281
293	282
294		-## basic SCH
	283	+## SCH
	284	+
	285	+ESP8266 drive
	286	+
	287	+![](2025-08-19-15-06-08.png)
	288	+
	289	+![](2025-08-19-15-06-34.png)
	290	+
	291	+### basic SCH
295	292
296	293	![](2025-08-26-20-59-36.png)
297	294
	295	+## driver chip
	296	+
	297	+[[SSD1673A]]
	298	+- Holitech,HINK-E0213A01,EINK,2.13,B/W,,250 x 122,SPI,24,SSD1673A,,
	299	+
	300	+[[SSD1675B]]
	301	+- Holitech,HINK-E0213A09,EINK,2.13,B/W,,212 x 104,SPI,24,SSD1675B,,
	302	+- Holitech,HINK-E0213A07,EINK,2.13,B/W/R,,212 x 104,SPI,24,SSD1675B,,
298	303
299	304	## ref
300	305