Wifi Ppcimac G4

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What you need to get started depends on what type of optical drive you have in your G4- or G5-based PowerBook or Mac. If you have a DVD drive, you can simply burn the ISO image of Lubuntu 16.04 to. Wireless G Pci Adapter free download - Belkin Wireless G USB Network Adapter, Linksys Wireless-G PCI Adapter, Linksys WMP54G Wireless-G PCI Adapter, and many more programs. The amount of time, in minutes, it took me to move a 2.3-gigabyte file over a WiFi network from two machines—a modern laptop running MacOS and the Mac Mini G4—that were sitting directly next to one another. For sake of comparison, I sent the same file over Bluetooth on what were, again, two computers sitting directly next to one another.


I just purchased a new iMac running Lion 10.7.3 ( 2.7 GHz with i5 ) and a 16 Gig Wifi iPad, I also have a G4 867 Power PC running Tiger 10.4.11.

Currently I have a Linksys 2.4 Ghz 802.11g router connected to a cable modem and my G4. This makes up my small WiFI network. It runs well, but I also know that 802.11g and the 2.4GHz are older standards.

I have been looking at getting the Airport Extreme, but I am not sure if I will be able to set it up because the system requirements for the Extreme I need to be running at least 10.5.7 for set up and admin.

I was wondering if I could do the set up on my iMac and then unplug and plug it into the G4 ? or perhaps you fine folks could offer up a better solution.


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P.S The G4 does not have a Network card or any Wifi capability, I would like to keep it connected to the network with an ethernet cable, but I am not sure if a WiFi card or USB adapter would be cost effective. But I am open to any ideas.

iMac, Mac OS X (10.7.2), 2.7 Ghz - Intel i5 - 4 GB 1333

Posted on Apr 6, 2012 2:02 PM

The ESP8266 is a low-cost and readily available Wi-Fi module with full TCP/IP stack and microcontroller capability.It can be used with any Pixhawk series controller.

ESP8266 is the defacto default WiFi module for use with Pixracer (and is usually bundled with it).

Where to Buy

The module is readily available.A few vendors are listed below.

Module Setup

The ESP8266 firmware has these factory settings:

  • SSID: PixRacer
  • Password: pixracer
  • WiFi Channel: 11
  • UART speed 921600

Build From Sources

The firmware repository contains instructions and all the tools needed for building and flashing the firmware.

Pre Built Binaries

Wifi Ppcimac G4

Updating the Firmware

If you have firmware 1.0.4 or greater installed, you can do the update using the ESP's Over The Air Update feature.Just connect to its AP WiFi link and browse to: You can then select the firmware file you downloaded above and upload it to the WiFi Module.

Flashing the ESP8266 Firmware

Before flashing, make sure you boot the ESP8266 in Flash Mode as described below.If you cloned the MavESP8266 repository, you can build and flash the firmware using the provided PlatformIO tools and environment. If you downloaded the pre-built firmware above, download the esptool utility and use the command line below:


  • firmware_xxxxx.bin is the firmware you downloaded above
  • your_serial_port is the name of the serial port where the ESP8266 is connected to (/dev/cu.usbmodem for example)

Wiring for Flashing the Firmware

ESP8266 must be powered with 3.3 volts only.

There are various methods for setting the ESP8266 into Flash Mode but not all USB/UART adapters provide all the necessary pins for automatic mode switching. In order to boot the ESP8266 in Flash Mode, the GPIO-0 pin must be set low (GND) and the CH_PD pin must be set high (VCC). This is what my own setup looks like:

I built a cable where RX, TX, VCC, and GND are properly wired directly from the FTDI adapter to the ESP8266. From the ESP8266, I left two wires connected to GPIO-0 and CH_PD free so I can boot it either normally or in flash mode by connecting them to GND and VCC respectively.


ESP8266 (ESP-01) Pinout

Flashing Diagram using an FTDI USB/UART Adapter

Pixhawk/PX4 Setup & Configuration

If using PX4 1.8.2 (and earlier) you should connect the ESP8266 to TELEM2 and configure the port by setting the parameterSYS_COMPANION to 1921600 (remember to reboot after setting the parameter). The following instructions assume you are using PX4 versions after 1.8.2

Wifi Ppcimac G400

Connect your ESP8266 to your Pixhawk-series flight controller (e.g. Pixracer) on any free UART.

Connect the flight controller to your ground station via USB (as WiFi is not yet fully set up).

Using QGroundControl:

  • Configure the serial port used to connect the ESP8266.Remember to set the baud rate to 921600 in order to match the value set for the ESP8266.

Once the firmware (port) is set up you can remove the physical USB connection between the ground station and the vehicle.

Wifi Ppcimac G40

Connect via ESP8266 to QGC

On your wifi-enabled QGroundControl ground station computer/tablet, find and connect to the open wireless network for your ESP8266.

  • By default the ESP8266 network is named PixRacer and the default password is pixracer.
  • On Windows, the connection settings will look like this:

Wifi Ppcimac G4

QGC automatically starts its UDP link on boot.Once your computer/tablet is connected to the PixRacer WiFi Access Point, it will automatically make the connection.

Wifi Ppcimac G410

You should now see HUD movement on your QGC computer via wireless link and be able to view the summary panel for the ESP8266 WiFi Bridge (as shown below).

If you have any problem connecting, see QGC Installation/Configuration Problems.