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Frequently Asked Questions for Atomic Pi
Updated 02/21/2019

Questions?    Order online or call (408) 330-5599

 User Forum    Reddit     User's Guide

 

Frequently Asked Questions  

 


How do I get started?
How do I get into the BIOS?
How do I log in?
How can I view the default password without HDMI?
Is HDMI audio supported?
What is the root password?
Is there a User's Guide?
What 5V power supplies do you suggest?
Do I need 12V also?
How do I switch back to the GUI from a terminal?
What is the physical size?
How do I install another operating system?
Can I reinstall the default OS?
How can I determine the installed Linux version?
What are the processor board specifications?
Can you release the processor board schematics?
How's the GPIO mapped? Full Atom GPIO listing Quick GPIO List
What are the large breakout board schematics? Gerbers BOM
Have image files for processor board?  Image files for large breakout board?
Baby breakout board schematic?
What's the difference between the baby and full-size breakout?
What's the power I/O connector pinout?
Crash on GPU start or when USB hub is attached!
What are the mating JST connector part numbers?
What's the Genesys SD Card Interface chip spec?
Where's the Wired Ethernet Chip Datasheet?
Where's the WiFi Chip Datasheet?
How can I setup WiFi?
Where's the Intel Atom x5 Datasheet?  Vol 1 Vol 2  Updates  Atom  Abbreviated Spec
Where's the Bosch sensor data?  Sensortech GitHub Site  Adafruit Sensortech Info
Where's the Bluetooth Interface datasheet?
Where's the debug port?
What's the XMOS Digital Audio Processor?
Where can I order an XMOS JTAG programmer?
How can I build an xTAG3 programming cable?
How can I reset the XMOS and enable the I2S MIC inputs?
TI Class-D Audio Amp
I2S Microphone Support  Adafruit Mic InvenSense Mic
Have thermal test reports?  Imaging   Temp/Humid
Have SolidWorks models?  STEP  SLDPRT 
Board outline in PDF format? 
Sample Enclosure Design for 3d printing  Top.stl  Bottom.stl
Suggested Power Supplies & Connectors?
Where can I find the AMP Mate&Lock power connector?
What are the mating connectors for the CPU card?
What antennae do you recommend?
*nix Serial Port Tips

User Forum    Reddit



Q:   How do I log in?


A:    When you boot into the GUI, it will be in the center of the screen in recent versions. In all versions, you can use CTL-ALT-F2 to open a window. Log in with user: atomicpi and the secure default password shown on the screen.

  1.  Press Del at the AAeon BIOS Splash screen
  2.  Press the Tab key at the AAeon BIOS Splash. This brings up the familiar AMI-type BIOS display and then you can press Esc or Del.
  3.  If using a mouse and you're fast enough you can move the cursor to the 'Setup button' in the upper-right corner of the screen and left-click that, but that method can be a bit clunky on a wireless keyboard or touchpad. A real mouse works best.

Q:   If I don't have an HDMI monitor, how can I see the password?  Where's the debug port?

 

A:    The password is also available via the 3.3V TTL serial debug port via the connector marked CN10 UART. Pinout is 1=TXD, 2=RXD, 3=GND

If you have a large breakout board, use the serial-USB debug port marked CN1 DEBUG USB. Otherwise, a 3.3V TTL to USB cable to CN10 will work fine. The board comes up at 115,200 baud.

Linux can be reconfigured to use other ports for debug.. Jumpers JP1 and JP2 should be set towards the CH340 marking to enable the TTL-USB converter.


Q:   Is HDMI audio supported?


A:    Yes, HDMI is the primary audio output device.  A secondary system based on
the XMOS audio processor is also available in some operating systems.  The XMOS drives a class-D stereo power amplifier.


Q:   What is the physical size?


A:    The CPU and breakout board measure 5.985 x 4.755 x 1.980" including the breakout board, excluding the rubber feet.


Q; How can I reset the XMOS processor?

 

#!/bin/sh

Reset xMOS audio processor
echo 349 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio349/direction
echo 0 > /sys/class/gpio/gpio349/value
echo 1 > /sys/class/gpio/gpio349/value
 

Set MIC input MUX low to select ext. mic
echo 341 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio341/direction
echo 0 > /sys/class/gpio/gpio341/value


Q:   What antennae do you recommend?


A:    Selection depends on your needs.  Aliexpress.com has a good variety.  You can choose single or dual-band WiFi antennae, omni, directional or yagi antennae will work fine. Polarized antennae are available. U.FL to RP-SMA adapter cables are handy and inexpensive. The Mediatek WiFi chip supports 2-antenna diversity. No antenna is needed for very short range operation (a few feet).


Q:   What is the difference between the large breakout board and the "baby breakout" board?


A:  The "whole enchilada" is a big breakout board with large screw terminal I/O, prototype area, USB<->TTL debug, etc.  It's intended for use as a development platform. See the V2 schematic here.

The "baby breakout" is really just the 26 pin connector and a 2.5mm barrel connector for more convenient power input. Schematic here.


Q:   What is the root password?

A:   There's none (root can't log in). If you need one, set one up yourself, e.g.

$ sudo bash

# passwd root

Normally, people log in as regular users and use sudo/super/whatever to temporarily gain root privileges. This is better from an audit perspective. We understand that some desktop apps might still ask for the root password., but the vast majority can be made to use sudo.

There is no current reason to have a root password in the first place (if only an extremely long one written on a sheet of paper tucked away somewhere for a case where the OS is so broken that it denies all logins except for root). On the Atomic Pi, the  password for root is not set in Ubuntu which leaves root login is disabled by default. The user account created during Ubuntu installation (atomicpi) is associated with all sudo capabilities.
Related discussion: https://help.ubuntu.com/community/RootSudo

Q:   How do I install another operating system?

 

A:    You can install a new OS via USB or SD card or LAN. Use BIOS settings to change the boot order.


Q:   Do I need 12V also?

A:   The only reason to supply 12V is if you want to run the class-D audio amp at its full power 2x5W. The amp will produce about 1.5W/ channel running on 5V.   Most people use HDMI audio out. In that case the amp power can be left off to save energy.


Q:   Can I get the default OS installation, so that I may reinstall it?

A:   We will be making a Lubuntu image (and possibly other flavors) available for download soon. The date is not yet known.  Since we are continuing to make updates, the downloaded version may be newer.


Q:   How can I determine the version I'm running?

A:    To determine the AtomicPi Version, open a terminal window and type atomicpi-version


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If we haven't answered your questions, please call (408) 330-5599 or send email. We're glad to help.

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