Eink-word-clock-watch - Revision history

Jelly: /* Parts */

2019-04-15T18:40:17Z

Parts

← Older revision		Revision as of 18:40, 15 April 2019
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	=== Parts ===		=== Parts ===

	* [https://www.waveshare.com/1.54inch-e-paper.htm e-eink screen] [https://www.waveshare.com/w/upload/7/77/1.54inch_e-Paper_Datasheet.pdf datasheet] Requiring 3.3 V, SPI and has refresh power req. of 26.4 mW with standby power of < 0.0 17 mW (0.0264/3.3 = 8mA)		* [https://www.waveshare.com/1.54inch-e-paper.htm e-eink screen] [https://www.waveshare.com/w/upload/7/77/1.54inch_e-Paper_Datasheet.pdf datasheet] [https://www.unisystem-displays.com/en/fileuploader/download/download/?d=0&file=custom%2Fupload%2Ffile%2Fc70036746e01f55cd5bc6c7d14c8c34b%2FHINK-E0154A05_spec%C2%A05.11.pdf datasheet] Requiring 3.3 V, SPI and has refresh power req. of 26.4 mW with standby power of < 0.0 17 mW (0.0264/3.3 = 8mA)
	* Coin cell (3V ~ 225 mAh / lithium battery small enough? (if powerful enough) 3.7 V 180 mAh 502025 Lithium Polymeer Li-Po should fit under the display, but might be too big.		* Coin cell (3V ~ 225 mAh / lithium battery small enough? (if powerful enough) 3.7 V 180 mAh 502025 Lithium Polymeer Li-Po should fit under the display, but might be too big.
	*		*

2019-04-15T07:58:28Z

MCU

← Older revision		Revision as of 07:58, 15 April 2019
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	* atmega 328P 320 uA "active mode", 200 nA power down and 1.3 uA power save.		* atmega 328P 320 uA "active mode", 200 nA power down and 1.3 uA power save.
	* stm8s		* stm8s
			* [https://docs.espressif.com/projects/esp-idf/en/latest/get-started/get-started-pico-kit.html esp32 pico] 150-10 uA

	=== Hardware ===		=== Hardware ===

2019-04-14T19:48:30Z

2019-04-14T12:22:30Z

Plan

← Older revision		Revision as of 12:22, 14 April 2019
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	=== Prototyping ===		=== Prototyping ===
	Use a e-ink breakout board with the preferred $MCU to display a simple "hello world" text every three minutes and measure the power usage.		Use a e-ink breakout board with the preferred $MCU to display a simple "hello world" text every three minutes and measure the power usage.

			=== Studying material ===

			* [https://www.youtube.com/user/contextualelectronic/playlists Kicad]
			* [https://www.youtube.com/watch?v=35YuILUlfGs pcb design]

2019-04-14T09:26:00Z

Plan

← Older revision		Revision as of 09:26, 14 April 2019
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	* Coin cell (3V ~ 225 mAh / lithium battery small enough? (if powerful enough) 3.7 V 180 mAh 502025 Lithium Polymeer Li-Po should fit under the display, but might be too big.		* Coin cell (3V ~ 225 mAh / lithium battery small enough? (if powerful enough) 3.7 V 180 mAh 502025 Lithium Polymeer Li-Po should fit under the display, but might be too big.
	*		*

			=== MCU ===
			* atmega 328P 320 uA "active mode", 200 nA power down and 1.3 uA power save.
			* stm8s

	=== Hardware ===		=== Hardware ===

2019-04-13T21:35:31Z

Hardware

← Older revision		Revision as of 21:35, 13 April 2019
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	=== Hardware ===		=== Hardware ===
	* Display size (e-ink) 31.8mm × 37.32mm × 1.05mm		* Display size (e-ink) 31.8mm × 37.32mm × 1.05mm
			* PCB
			* 3d printed case
			* arm strap?

	=== Prototyping ===		=== Prototyping ===
	Use a e-ink breakout board with the preferred $MCU to display a simple "hello world" text every three minutes and measure the power usage.		Use a e-ink breakout board with the preferred $MCU to display a simple "hello world" text every three minutes and measure the power usage.

2019-04-13T21:34:30Z

Requirements

← Older revision		Revision as of 21:34, 13 April 2019
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	* Refresh e-ink screen (ie. update word clock) every ~ 3 minutes		* Refresh e-ink screen (ie. update word clock) every ~ 3 minutes
	* Be able to set the time or sync it via WiFi/Radio?		* Be able to set the time or sync it via WiFi/Radio?
	* Capable or running for > one month		* Capable of running for > one month

	=== Interfaces ===		=== Interfaces ===

2019-04-13T21:34:17Z

← Older revision		Revision as of 21:34, 13 April 2019
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	{{Project		{{Project
	\|Name=E-ink wordclock watch		\|Name=E-ink wordclock watch
	\|Omschrijving=E-ink ~~wordlock~~ watch		\|Omschrijving=E-ink wordclock watch
	\|Status=In progress		\|Status=In progress
	\|Contact=jelly		\|Contact=jelly
	}}		}}

	== ~~E-ink word clock watch~~ ==		== Plan ==

	~~This~~ is ~~a research page for my project~~ to make ~~a watch with~~ an e-ink ~~screen displaying~~ word clock.		The plan is to make an e-ink watch with a 1.54" display which will display a word clock of the current time which updates every ~ 3/5 minutes.

	=== Requirements ===		=== Requirements ===
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	* SPI		* SPI
	* Serial for debugging / flashing?		* Serial for debugging / flashing?
			* RTC

	=== Parts ===		=== Parts ===

2019-04-13T21:33:18Z

← Older revision		Revision as of 21:33, 13 April 2019
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			{{Project
			\|Name=E-ink wordclock watch
			\|Omschrijving=E-ink wordlock watch
			\|Status=In progress
			\|Contact=jelly
			}}

	== E-ink word clock watch ==		== E-ink word clock watch ==

2019-04-13T21:31:47Z

← Older revision		Revision as of 21:31, 13 April 2019
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	* [https://www.waveshare.com/1.54inch-e-paper.htm e-eink screen] [https://www.waveshare.com/w/upload/7/77/1.54inch_e-Paper_Datasheet.pdf datasheet] Requiring 3.3 V, SPI and has refresh power req. of 26.4 mW with standby power of < 0.0 17 mW (0.0264/3.3 = 8mA)		* [https://www.waveshare.com/1.54inch-e-paper.htm e-eink screen] [https://www.waveshare.com/w/upload/7/77/1.54inch_e-Paper_Datasheet.pdf datasheet] Requiring 3.3 V, SPI and has refresh power req. of 26.4 mW with standby power of < 0.0 17 mW (0.0264/3.3 = 8mA)
	* Coin cell (3V ~ 225 mAh / lithium battery small enough? (if powerful enough)		* Coin cell (3V ~ 225 mAh / lithium battery small enough? (if powerful enough) 3.7 V 180 mAh 502025 Lithium Polymeer Li-Po should fit under the display, but might be too big.
	*		*