waypoint

DOCS.md

@@ -29,7 +29,7 @@
 #### RTC Module
 1. RTC GND to Rpi Physical Pin 9 (GND)
 3. RTC SDA to RPi Physical Pin 3 (GPIO 2 / SDA1 (I2C))
-4. RTC RCL to RPi Physical Pin 5 (GPIO 4 / SCL1 (I2C))
+4. RTC SCL to RPi Physical Pin 5 (GPIO 4 / SCL1 (I2C))
 5. RTC VCC to RPi Physical Pin 1 (3.3 volts)
 
 ### Setup Pi

huawaii-ub-8mt-breakout.md

@@ -0,0 +1,23 @@
+### U-BLOX LEA-M8T-0-10 HUAWEI GPS Module
+**Pins are 2mm pitch**
+**3.3 Volts**
+| Cable  | Module Pin | Module Pin Meaning       | Raspberry Pi 4 Pin         | Voltage                 | Notes                                                     |
+|:-------|:-----------|:-------------------------|:---------------------------|:------------------------|:----------------------------------------------------------|
+| Red    | 2 - VCC        | Voltage In           | 1 - 3.3 Volts Out          | 3.3 V               | NOT 5 V TOLERANT                                          |
+| Black  | 8 - GND        | Ground               | 25 - Ground                | 3.3 V?              | UNKNOWN 3 V AND 5 V TOLERANCES                            |
+| Yellow | 4 - RST        | Hardware Reset       | NC? - Not Connected/GPIO?  | 3.3 V               | NOT 5 V TOLERANT                                          |
+| White  | 6 - TP1        | Time Pulse 1/PPS     | 12 - GPIO 18               | 3.3 V               | NOT 5 V TOLERANT                                          |
+| Purple | 7 - TP2        | Time Pulse 2/PPS     | NC? - Not Connected/GPIO?  | 3.3 V               | NOT 5 V TOLERANT                                          |
+| Green  | 5 - RXD        | UART Receive         | 8 - UART Transmit          | 3.3 V               | NOT 5 V TOLERANT                                          |
+| Grey   | 3 - TXD        | UART Transmi  t      | 10 - UART Receive          | 3.3  V              | NOT 5 V TOLERANT                                          |
+| Orange | 1 - VCC_ANT    | Antenna Power Supply | NC? Regulated Power Supply | 5.0 V Max 100 mA    | MUST USE REGULATED POWER SUPPLY AND UNKNOWN 3 V TOLERANCE |
+
+### Adafruit DS3231 Precision RTC Breakout
+**Pins are 2.54mm pitch**
+**3.3 Volts**
+| Cable | Module Pin    | Module Pin Meaning | Raspberry Pi 4 Pin | Voltage |
+|:------|:--------------|:-------------------|:-------------------|:--------|
+| Red   | 1 - VIN       | Voltage In         | 1 - 3v3            | 3.3 V   |
+| Black | 2 - GND       | Ground             | 9 - Ground         | 3.3 V   |
+| Brown | 3 - SCL       | I2C Clock          | 5 - GPIO 4 / SCL1  | 3.3 V   |
+| Green | 4 - SDA       | I2C Data           | 3 - GPIO 2 / SDA1  | 3.3 V   |