Be careful to avoid discharging any static electricity on the boards. The Adafruit 954 USB to TTL Serial Cable is available at web page: https://www.adafruit.com/product/954 Connecting the Adafruit 954 --------------------------- The cable from the Adafruit 954 needs to be connected to the TWR-K70F120M and the USB-A plug needs to be connected to your development computer. Do not connect the USB-A plug until the appropriate drivers have been installed. Note the numbering of pins on the J6 header that are shown on the silkscreen on the PCB (Printed Circuit Board). THIS PIN NUMBERING IS DIFFERENT FROM HOW DIP (Dual In-line Package) CHIP ARE NUMBERED. Pin 1 is in the usual location, but pin 2 is opposite pin 1; then, pin 3 is next to pin 1 and pin 4 is opposite pin 3; and so forth. The numbering of pins on the header follows this arrangement. Here is the pin numbering on the J6 header as viewed from above the header: 7 5 3 1 ------------- | | ------------- 8 6 4 2 The end of the cable from the Adafruit 954 has four wires with separate female crimp connectors in individual 0.1" housings. The wires leading to the female crimp connectors are colored white, green, black, and red. IMPORTANT: DO NOT CONNECT THE RED WIRE TO ANYTHING! If you want, you can cover the connector with tape so that it cannot be connected to anything. The red wire supplies 5V at 500mA power from the USB connector. Connect the Adafruit white wire to pin 1. Connect the Adafruit green wire to pin 5. Connect the Adafruit black wire to pin 8. The female connectors should be fully pushed onto the appropriate header pin so that none of the gold-plated header pin is visible. Chip used in the Adafruit 954 ----------------------------- Prior to July 1, 2014 the Adafruit 954 used the PL2303HX chipset and had a black USB body. As of July 1, 2014, the Adafruit 954 had a violet body and used the PL2303TA chipset. The PL2303TA chipset is Windows 8 compatible, and is more reliable than the PL2303HX chipset especially when dealing with disconnects from the USB port. As of December 21, 2016, the Adafruit 954 uses the SiLabs CP2012 chipset instead of either of the Prolific chipsets. SiLabs chips seem to have better driver stability, and can handle very high speeds and non-standard baud rates. Other than the driver installation, the devices perform identically. Driver needs to be installed ---------------------------- The Adafruit web page for Adafruit 954 Windows drivers is: https://learn.adafruit.com/adafruits-raspberry-pi-lesson-5-using-a-console-cable/software-installation-windows For the CP210x driver, VCP driver releases 11.1.0 and later should be used for Windows 10 version 1803 and later, or for Windows 11. For older versions of Windows, VCP driver releases with version numbers 10.0.0 and less should be used. You can determine the version of Windows by clicking on the Windows icon in the lower-left corner, then selecting "Settings" (the gear), then click on "System." Scroll down in the left-side menu and click on "About." Under "Windows specifications," see the Version. After unzipping the driver file, open the Release Notes and follow the directions there. The Adafruit web page for Adafruit 954 Macintosh drivers is: https://learn.adafruit.com/adafruits-raspberry-pi-lesson-5-using-a-console-cable/software-installation-mac The Adafruit web page for Adafruit 954 Linux drivers is: https://learn.adafruit.com/adafruits-raspberry-pi-lesson-5-using-a-console-cable/software-installation-linux