Chip-cn-dat/SIMCOM-dat/SIMCOM-dat.md
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@@ -24,6 +24,7 @@ https://www.electrodragon.com/w/Category:SIMCOM#Schematic
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- [[SIM7600-dat]]
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+- [[Y7080E-dat]]
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## Modules
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Chip-cn-dat/SIMCOM-dat/Y7080E-dat/Y7080E-dat.md
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@@ -70,7 +70,8 @@ for testing
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- [[GPS-antenna-design-dat]] - [[antenna]] - [[antenna-design-dat]] - [[antenna-dat]]
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-- [[reset-dat]] - [[status-dat]]
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+- [[reset-dat]] - [[status-dat]] - [[indicator-dat]]
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- [[I2C-dat]] - [[SPI-dat]]
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+
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- [[Y7080]]
Circuits-dat/VBAT-dat/2024-07-10-01-19-47.png
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Circuits-dat/VBAT-dat/VBAT-dat.md
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+
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+# VBAT
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+
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+## NBIOT
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+
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+- 100uf *2
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+- 100nf
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+- 33pf
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+
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+![](2024-07-10-01-19-47.png)
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Circuits-dat/indicator-dat/2024-07-10-01-14-34.png
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Circuits-dat/indicator-dat/indicator-dat.md
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![](2024-07-05-19-06-28.png)
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+## indicator
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+
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+![](2024-07-10-01-14-34.png)
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Circuits-dat/sim-card-dat/2024-07-10-01-16-22.png
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Circuits-dat/sim-card-dat/sim-card-dat.md
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+
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+# sim-card-dat
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+
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+SIM_VDD
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+
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+w/current limit resistor, filter cap
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+- SIM_DATA -> pull-up to SIM_VDD by 1K
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+- SIM_RST
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+- SIM_CLK
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+
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+![](2024-07-10-01-16-22.png)
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Tech-dat/Interface-dat/I2C-dat/2024-07-10-01-21-40.png
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Tech-dat/Interface-dat/I2C-dat/I2C-dat.md
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@@ -36,13 +36,19 @@ the most easy to use library for ESP
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- https://github.com/ThingPulse/esp8266-oled-ssd1306
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+## circuits
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+- common pullup resistors 1K/4.7K/10K
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+![](2024-07-10-01-21-40.png)
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## ref
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- https://randomnerdtutorials.com/esp32-i2c-communication-arduino-ide/#1
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+
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+
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+
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- [[arduino-dat]]
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- [[I2C-scan-dat.ino]]
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Tech-dat/antenna-dat/antenna-design-dat/2024-07-10-01-20-26.png
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Tech-dat/antenna-dat/antenna-design-dat/antenna-design-dat.md
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+## RF antenna
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+
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+![](2024-07-10-01-20-26.png)
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+
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+
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+- [[GPS-antenna-design-dat]]
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