2023-07-09 14:44:15 +00:00
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## ZBS243 electronic shelf label
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### ref
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- https://github.com/jjwbruijn/OpenEPaperLink
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- https://github.com/atc1441/ZBS_Flasher3
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## hardware
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1. ESP32 + ≥ 4Mb PSRAM
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2. ELS ZBS243 as 802.15.4 modem connected to the ESP32
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3. multiple ELSs with flashed firmware
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2023-07-04 09:36:51 +00:00
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2023-08-10 15:52:26 +00:00
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## Access Point
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due the fact, that this raw 802.15.4 traffic, any device capable will do it. The access point can exists in multiple forms
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| CPU | psram | flash | wireless SoC | common board name |
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|--|--|--|--|--|
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| esp32 | x | x | ZBS tag | lolin |
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| esp32 | x | | CC2562 | sonoff zigbee bridge pro|
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| none | | | | CC2531 |
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| none | | | | CC1352/CC2562 |
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2023-07-09 18:36:43 +00:00
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### power usage
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the nrf power profiler kit 2 was used:
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2023-07-14 05:09:58 +00:00
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![boot_current-zbs.png]
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2023-07-09 18:36:43 +00:00
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![sleep-zbs.png]
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![full-cycle-zbs.png]
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2023-07-04 09:36:51 +00:00
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## mass flash event
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0. determine serial number from device
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2023-07-04 09:53:47 +00:00
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0. extract MAC (8byte) from flash 0x74004? (found @ 0xFC06, 4 bytes for MAC ?)
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2023-07-04 09:36:51 +00:00
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0. infopage MAC (8byte) from eeprom 0x10
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1. backup 64k flash
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2. backup 1k eeprom infopage (calibration data and possible MAC)
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3. merge and flash new firmware image
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## minor additional
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2023-07-09 14:43:07 +00:00
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- gpio max current for power
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2023-07-04 09:36:51 +00:00
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- add espressif dev board
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- simple power toggle
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- remote firmware update
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2023-07-06 08:03:24 +00:00
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- fix mapping txd and rxd in the serial println -> mostly wrong zbs-flasher labels
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- change uart1 pins and get the led working
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- lifepo4 battery mod?
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2023-08-10 15:52:26 +00:00
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### json templates
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#### logo, conference name and 2 topics
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```
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[
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{ "box": [5, 5, 80, 110, 2] },
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{ "text": [95 , 5, "CCICON'23", "fonts/bahnschrift30", 1] },
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{ "text": [95 , 60, "08:00 Opening", "fonts/calibrib30", 1] },
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{ "text": [95 , 90, "09:30 Break", "fonts/calibrib30", 1] }
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]
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```
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```
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[
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{ "line": [5, 5, 80, 5, 2] },
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{ "line": [5, 5, 5, 110, 2] },
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{ "line": [80, 5, 80, 110, 2] },
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{ "line": [5, 110, 80, 110, 2] },
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{ "text": [95 , 5, "CCICON'23", "fonts/bahnschrift30", 1] },
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{ "text": [95 , 60, "08:00 Opening", "fonts/calibrib30", 1] },
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{ "text": [95 , 90, "09:30 Break", "fonts/calibrib30", 1] }
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]
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```
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