Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision Next revisionBoth sides next revision | ||
| inbox:toh:comfast:cf-ew72_v2 [2023/08/23 13:32] – [Photos] filimonic | inbox:toh:comfast:cf-ew72_v2 [2023/08/24 10:22] – [Serial] filimonic | ||
|---|---|---|---|
| Line 134: | Line 134: | ||
| ===== Hardware ===== | ===== Hardware ===== | ||
| ==== Info ==== | ==== Info ==== | ||
| - | ^ Architecture | + | ^ Architecture |
| - | ^ Vendor | + | ^ Vendor |
| - | ^ Bootloader | + | ^ Bootloader |
| - | ^ System-On-Chip | + | ^ System-On-Chip |
| - | ^ CPU/ | + | ^ CPU/ |
| - | ^ Flash-Chip | + | ^ Flash-Chip |
| - | ^ Flash size | + | ^ Flash size |
| - | ^ RAM | EXAMPLE 64 MiB | + | ^ RAM | 128 MiB | |
| - | ^ Wireless | + | ^ Wireless |
| - | ^ Ethernet | + | ^ Ethernet |
| - | ^ Switch | + | ^ Switch |
| - | ^ USB | EXAMPLE 1x 2.0 | | + | ^ USB | None | |
| - | ^ Serial | + | ^ Serial |
| - | ^ JTAG | EXAMPLE [[#JTAG|Not populated]] | + | ^ JTAG | Not populated |
| + | |||
| ===== Power ===== | ===== Power ===== | ||
| Line 165: | Line 165: | ||
| * COMFAST CF-EW72 V2 with MT7621AT and separate DDR RAM chip onboard. | * COMFAST CF-EW72 V2 with MT7621AT and separate DDR RAM chip onboard. | ||
| * COMFAST CF-EW72 V2 with MT7621DAT with integrated RAM and no DDR RAM soldered chip onboard. | * COMFAST CF-EW72 V2 with MT7621DAT with integrated RAM and no DDR RAM soldered chip onboard. | ||
| - | PCBs for both variants | + | PCBs for both variants |
| COMFAST CF-EW72 V2 known to be sold both in unpainted cardboard box and colorful glossy cardboard box. | COMFAST CF-EW72 V2 known to be sold both in unpainted cardboard box and colorful glossy cardboard box. | ||
| I guess, but not guarantee that colorful box is for new variant equipped with MT7621DAT SoC and no RAM chip. | I guess, but not guarantee that colorful box is for new variant equipped with MT7621DAT SoC and no RAM chip. | ||
| + | Seems that devices also have different factory labels. | ||
| /*** if info available: uncomment and fill in | /*** if info available: uncomment and fill in | ||
| Line 186: | Line 187: | ||
| /* Thanks, your wiki administration - Oct. 2015 */ | /* Thanks, your wiki administration - Oct. 2015 */ | ||
| - | **Insert photo of front of the casing** | + | **Photo of casing** |
| - | **Insert photo of back of the casing** | + | ^ Front ^ Back ^ Opened Lid ^ |
| + | | {{: | ||
| **Photo of backside label** | **Photo of backside label** | ||
| - | ^ Variant for MT6721AT | + | ^ Variant for MT7621AT |
| - | | {{ : | + | | {{ : |
| **Photo of PCB** | **Photo of PCB** | ||
| Line 205: | Line 207: | ||
| ==== Opening the case ==== | ==== Opening the case ==== | ||
| - | <WRAP BOX> | + | === Tools needed === |
| - | FIXME //Describe what needs to be done to open the device, e.g. remove | + | |
| - | </ | + | * Hot air gun (to gently |
| + | * Needle nose pilers | ||
| + | * PH0 screwdriver | ||
| + | * Сontainer for small items (zip bag) | ||
| + | |||
| + | === Opening the case in steps === | ||
| + | ^ Step ^ Text ^ Image ^ | ||
| + | | 1 | Open the case and disconnect cables. | Click image\\ to enlarge | | ||
| + | | 2 | Use hot air to heat the factory label and peel it off.\\ If you wish, glue it to the back of the case, closer to the antennas. | {{: | ||
| + | | 3 | Remove 2 screws hidden under the factory label. | {{: | ||
| + | | 4 | Unscrew antennas.\\ Remove big rubber rings.\\ Unscrew the nuts from the Wi-Fi antenna connectors using thin-nosed pliers.\\ Do not remove washer and o-ring hidden under washer yet. | {{: | ||
| + | | 5 | Grasp the sides of the device and gently push the antenna connectors into the device.\\ Be careful with the center pin of the connector.\\ After the antenna connectors are completely inside the device, pull on the plastic insert with RJ45 connectors. | {{: | ||
| + | | 6 | Remove 2 washers and 4 o-rings in total.\\ There are 2 washers and 2 small o-rings on the outside of the case.\\ :!: There are two more small o-rings on Wi-Fi antenna connectors from the inside of the case.\\ They may be on antenna connectors or stick to casing from inside. Remove them.\\ | | | ||
| + | | 7 | Put into a zip bag:\\ ☑️ 1 factory label (if removed)\\ ☑️ 2 screws\\ ☑️ 2 big rubber rings\\ ☑️ 2 nuts\\ ☑️ 2 washers\\ ☑️ 4 small o-rings | | | ||
| + | | 8 | Put a zip bag inside an empty casing and close with a casing lid. | | | ||
| + | | 9 | Screw antennas to Wi-Fi connectors on PCB. | | | ||
| ==== Serial ==== | ==== Serial ==== | ||
| {{ : | {{ : | ||
| Line 215: | Line 232: | ||
| How to connect to the Serial Port of this specific device:\\ | How to connect to the Serial Port of this specific device:\\ | ||
| - | Device has factory-soldered 2.54mm pin header.\\ | + | * [[#Opening the case|Remove the case]].\\ |
| - | It is recommended NOT connect VCC pin as device powers from PoE.\\ | + | * Device has factory-soldered |
| - | GND pin is recommended to be connected. | + | * GND pin is recommended to be connected. \\ |
| - | In some situations device may not start when RX pin is connected - so, connect it right after you see output from device. | + | * :!: It is recommended NOT connect VCC pin as device powers from PoE.\\ |
| + | * :!: It is recommended to connect serial adapter through active (with separate power) USB hub. Avoid connecting to usb port connected | ||
| + | | ||
| + | * Connected RX also may cause random 5GHz Wi-Fi chip problems. | ||
| ^ Serial connection parameters\\ for COMFAST CF-EW72 V2 | 115200, 8N1, 3.3V | | ^ Serial connection parameters\\ for COMFAST CF-EW72 V2 | 115200, 8N1, 3.3V | | ||