USB HUB + WiFi Teardown

MrMobileWill teardown, usb 0 Comments

One day I come across an interesting product from Adafruit that I couldn’t resist getting. It will make a nice addition to the Raspberry Pi Zero. It’s a 3 port USB hub with inbuilt WiFi which takes the fourth port. Inspired by insideGadgets, here are some photos and part numbers. USB WiFi Hub Wish it was a bit more compact. I have a USB to OTG adapter in the USB plug. USB WiFi Hub Inside USB WiFi Hub PCB Top Main Components USB HUB – Terminus FE 1.1s 3.3V Regulator – AMS1117 WiFi – Realtek RTL8188ETV USB Wifi Hub IC USB Wifi Hub WiFI USB WiFi Hub PCB Bottom Interesting thing to note is the fourth USB port footprint, this PCB …

Routing High Speed Signals and USB

MrMobileWill pcb, usb 1 Comment

Eventually in most hobbyists’ path, one will end up working with high speed signals. These days so many microcontrollers support USB and even ones that don’t can use software USB. Of course using a microcontroller is the answer to every engineering problem, right? Most of us just work with USB 2.0 connected directly to a microcontroller for uploading and serial communications. With advent of the USB Tester, I have learned more about USB than I ever thought I would. Recently I have dived into USB 3. Which compared to 2.0, is so much more sensitive to your PCB routing as I found through trial and error. I have seen many projects on the various blogs and for sale on the …