diff --git a/networking_communications/index.html b/networking_communications/index.html
index 711ac39103c713ceb3457d981ea7cf461948ea40..a85af5612c3e8f74834b5ab325477be7788773bc 100755
--- a/networking_communications/index.html
+++ b/networking_communications/index.html
@@ -39,6 +39,15 @@
             <a href=hop/hello.broadhop-LED.t1624.ino>hello.broadhop-LED.t1624.ino</a> <a href=hop/hello.broadhop-LED.py>hello.broadhop-LED.py</a> <a href=hop/hello.broadhop-LED.t1624.mp4>video</a>
             <a href=hop/hello.broadhop-serial.D11C>hello.broadhop-serial.D11C</a> <a href=hop/hello.broadhop-serial.D11C.png>board</a> <a href=hop/hello.broadhop-serial.D11C.jpg>components</a> <a href=hop/hello.broadhop-serial.D11C.top.png>top</a> <a href=hop/hello.broadhop-serial.D11C.bot.png>bottom</a> <a href=hop/hello.broadhop-serial.D11C.holes.png>holes</a> <a href=hop/hello.broadhop-serial.D11C.interior.png>interior</a>
    <b><i>synchronous serial</i></b>
+      <i><a name=I2C href=https://www.nxp.com/docs/en/application-note/AN10216.pdf>I2C, TWI</a></i>
+         SCL/SDA, pull-ups
+         <a href=https://www.sparkfun.com/qwiic>Qwiic</a> <a href=https://learn.adafruit.com/introducing-adafruit-stemma-qt>STEMMA</a>
+         <a href=https://www.arduino.cc/reference/en/language/functions/communication/wire>Arduino</a> <a href=https://docs.micropython.org/en/latest/library/machine.I2C.html>MicroPython</a> libraries
+         <a href=https://academy.cba.mit.edu/classes/input_devices/mag/TLE493D/hello.TLE493D.t412.wire.ino>Wire</a> <a href=https://academy.cba.mit.edu/classes/input_devices/mag/TLE493D/hello.TLE493D.t412.softwire.ino>soft Wire</a> <a href=https://academy.cba.mit.edu/classes/input_devices/mag/TLE493D/hello.TLE493D.t412.nowire.ino>no Wire</a>
+         <a id=hello.I2C.t1614 href=I2C/hello.I2C.t1614>hello.I2C.t1614</a> <a href=I2C/hello.I2C.t1614.png>board</a> <a href=I2C/hello.I2C.t1614.jpg>components</a> <a href=I2C/hello.I2C.t1614.traces.png>traces</a> <a href=I2C/hello.I2C.t1614.traces_exterior.png>traces+exterior</a> <a href=I2C/hello.I2C.t1614.interior.png>interior</a> 
+            <a href=I2C/hello.I2C.ino>hello.I2C.ino</a> <a href=I2C/hello.I2C.mp4>video</a>
+         <a href=https://fabacademy.org/2020/labs/leon/students/adrian-torres/week14.html#hello_i2c>ATtiny412</a>
+         <i><a href=https://www.mipi.org/resources/i3c-frequently-asked-questions>I3C</a></i>
       <i><a name=SPI href=http://ww1.microchip.com/downloads/en/AppNotes/Atmel-2585-Setup-and-Use-of-the-SPI_ApplicationNote_AVR151.pdf>SPI</a></i>
          MISO/MOSI (<s>master/slave</s> &rarr; main/secondary)
          SDI/SDO/CS/SCK (serial data in/serial data out/chip select/serial clock)
@@ -52,14 +61,6 @@
                <a href=SD/hello.uSD.D11C.ino>hello.uSD.D11C.ino</a> <a href=SD/hello.uSD.D11C.mp4>video</a>
             <a href=SD/hello.uSD.44>hello.uSD.44</a> <a href=SD/hello.uSD.44.png>board</a> <a href=SD/hello.uSD.44.jpg>components</a> <a href=SD/hello.uSD.44.traces.png>traces</a> <a href=SD/hello.uSD.44.traces_exterior.png>traces+exterior</a> <a href=SD/hello.uSD.44.interior.png>interior</a>
                <a href=SD/hello.uSD.44.read.c>hello.uSD.44.read.c</a> <a href=SD/hello.uSD.44.read.make>make</a> <a href=SD/hello.uSD.44.read.txt>output</a>
-      <i><a name=I2C href=https://www.nxp.com/docs/en/application-note/AN10216.pdf>I2C, TWI</a></i>
-         SCL/SDA, pull-ups
-         <a href=https://www.sparkfun.com/qwiic>Qwiic</a> <a href=https://learn.adafruit.com/introducing-adafruit-stemma-qt>STEMMA</a>
-         <a href=https://www.arduino.cc/reference/en/language/functions/communication/wire>library</a> <a href=https://docs.micropython.org/en/latest/library/machine.I2C.html>library</a> <a href=http://academy.cba.mit.edu/classes/input_devices/mag/TLE493D/hello.TLE493D.t412.ino>hardware</a> <a href=http://academy.cba.mit.edu/classes/input_devices/mag/TLE493D/hello.TLE493D.t412.c>software</a>
-         <a id=hello.I2C.t1614 href=I2C/hello.I2C.t1614>hello.I2C.t1614</a> <a href=I2C/hello.I2C.t1614.png>board</a> <a href=I2C/hello.I2C.t1614.jpg>components</a> <a href=I2C/hello.I2C.t1614.traces.png>traces</a> <a href=I2C/hello.I2C.t1614.traces_exterior.png>traces+exterior</a> <a href=I2C/hello.I2C.t1614.interior.png>interior</a> 
-            <a href=I2C/hello.I2C.ino>hello.I2C.ino</a> <a href=I2C/hello.I2C.mp4>video</a>
-         <a href=https://fabacademy.org/2020/labs/leon/students/adrian-torres/week14.html#hello_i2c>ATtiny412</a>
-      <i><a href=https://www.mipi.org/resources/i3c-frequently-asked-questions>I3C</a></i>
    <b><i>asynchronous unclocked</i></b>
       <a href=ATP/ATP.txt><i>ATP</i></a>
          <a href=ATP/hello.ATP.RP2040>hello.ATP.RP2040</a> <a href=ATP/hello.ATP.RP2040.png>board</a> <a href=ATP/hello.ATP.RP2040.jpg>components</a> <a href=ATP/hello.ATP.RP2040.top.png>traces</a> <a href=ATP/hello.ATP.RP2040.interior.png>interior</a>