diff --git a/Pins.md b/Pins.md
index 471b456..745f4fa 100644
--- a/Pins.md
+++ b/Pins.md
@@ -9,12 +9,12 @@ todo: buy links
 | Cable  | Module Pin | Module Pin Meaning       | Raspberry Pi 4 Pin         | Voltage                 | Notes                                                     |
 |:-------|:-----------|:-------------------------|:---------------------------|:-----------------|:----------------------------------------------------------|
 | Red    | 2 - VCC        | Voltage In           | 1 - 3.3 Volts Out (Split)  | 3.3 V            | NOT 5 V TOLERANT                                          |
-| Black  | 8 - GND        | Ground               | 25 - Ground                | 3.3 V?           | UNKNOWN 3 V AND 5 V TOLERANCES                            |
+| Black  | 8 - GND        | Ground               | 6 - 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     | 16 - GPIO 23               | 3.3 V            | NOT 5 V TOLERANT                                          |
+| Purple | 7 - TP2        | Time Pulse 2/PPS     | NC? (16 - GPIO 23)               | 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                                          |
+| Grey   | 3 - TXD        | UART Transmit      | 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