Board-dat/MPC/MPC1120-dat/MPC1120-dat.md
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@@ -7,6 +7,9 @@ more test log please see here: - [[MPC1073-test-log-dat]]
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most same information refer to page [[MPC1119-dat]]
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+- [[I2C-dat]] - [[RPI3-I2C0-dat.md]]
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+
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+
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## pin map
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| chain | R | RPI_IO. | chain | G | RPI_IO. | chain | B | RPI_IO. |
Board-dat/NWI/NWI1252-dat/NWI1252-dat.md
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@@ -2,7 +2,7 @@
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# NWI1252-dat
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-
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+- [[ESP32-C3-dat]]
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## usage
Chip-dat/TI-dat/TI-Power-dat/TI-power-dat.md
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@@ -54,6 +54,7 @@ TPS7A89 == Small, Dual, 2-A, Low-Noise (3.8 μVRMS), LDO Voltage Regulator
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TPS76350DBVR == 150-mA, 10-V, low-dropout voltage regulator with enable
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+TPS7A45xx Low-Noise Fast-Transient-Response 1.5-A Low-Dropout Voltage Regulators - TPS7A4501, TPS7A4515, TPS7A4518, TPS7A4525, TPS7A4533
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## ref
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Chip-dat/TI-dat/TI-Signal-dat/TI-Signal-dat.md
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@@ -15,3 +15,15 @@
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+## LVDS
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+
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+- [[LVDS-dat]]
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+
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+SN65LVDS33, SN65LVDT33, SN65LVDS34, SN65LVDT34 - HIGH-SPEED DIFFERENTIAL RECEIVERS
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+
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+This family of four LVDS data line receivers offers the widest common-mode input voltage range in the industry. These receivers provide an input voltage range specification compatible with a 5-V PECL signal as well as an overall increased ground-noise tolerance. They are in industry standard footprints with integrated termination as an option.
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+
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+## ref
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+
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+- [[TI-dat]]
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+
Chip-dat/raspberry-pi-dat/RPI-SBC-dat/RPI-HDK-dat/RPI3-dat/RPI3-I2C0-dat.md
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@@ -0,0 +1,45 @@
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+
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+# RPI3-I2C0-dat.md
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+
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+# Raspberry Pi 3 — ID_SD / ID_SC for I²C?
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+
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+## ✔ Yes, they are an I²C bus
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+- `ID_SD` = I2C data
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+- `ID_SC` = I2C clock
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+- This bus is known as **I2C bus 0** (I2C0).
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+
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+## ⚠ Important limitations
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+1. **Reserved for HAT identification**
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+ - On official Raspberry Pi boards, I2C0 on ID_SD/ID_SC is used exclusively to read the **HAT EEPROM**.
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+ - The OS may lock or restrict this bus.
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+
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+2. **3.3V only**
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+ - Same voltage rules as other Pi GPIO pins.
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+
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+3. **Limited functionality**
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+ - SDA/SCL pull-ups are weak (1.8–3.3 kΩ typical on HATs).
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+ - Designed for short traces and tiny EEPROMs, not general sensors.
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+
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+## ✔ How to enable as general I²C (optional)
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+> Not recommended, but possible.
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+
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+Edit `/boot/config.txt`: dtparam=i2c_vc=on
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+
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+
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+Then you can access it as:
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+- `/dev/i2c-0` (I2C0)
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+
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+## ✔ Recommended method
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+Use the **main I²C bus**:
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+
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+- SDA = **GPIO 2**
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+- SCL = **GPIO 3**
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+- Bus = `/dev/i2c-1`
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+
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+This is the standard I²C bus for all sensors, modules, etc.
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+
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+
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+## ref
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+
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+- [[RPI3-dat]]
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+
Tech-dat/interactive-dat/display-dat/display-protocols-dat/LVDS-dat/LVDS-dat.md
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@@ -27,6 +27,10 @@ Whether it’s "parallel" or "serial" depends on how it’s used:
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+## chip
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+
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+- [[TI-signal-dat]]
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+
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## ref
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- [[display-dat]]
... ...
\ No newline at end of file
Tech-dat/signal-dat/signal-dat.md
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@@ -11,7 +11,7 @@
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- [[RSSI-dat]] - [[signal-strength-test-dat]]
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-
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+- [[LVDS-dat]]
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## unsort
app-dat/RC-apps-dat/rover-dat/Curiosity-rover-dat/Curiosity-rover-dat.md
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@@ -8,6 +8,10 @@
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- [CAD animated video](https://www.youtube.com/watch?v=bP7p5Bd2d50&t=74s)
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+
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+
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+
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+
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## chassis
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- [[rocker-bogie-suspension-dat]]
board-series-dat/RMP-driver-dat/RMP-driver-dat.md
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@@ -31,6 +31,9 @@
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- [[HUB75-dat]] - [[MPC1120-dat]]
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+- [[RPI3-I2C0-dat.md]]
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+
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+
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## Typical wiring with RPI - for MPC1073
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