To buy the Soekris boards In Europe or

In The USA

FreeBSD on the Soekris:


        tip soekris


        ssh -e none box

Note the scripts for CF control:

Or manually:

        dd if=/dev/zero of=/dev/ad8 count=2
        fdisk -BI ad8
        disklabel -w -B ad8s1 auto
        disklabel -e ad8s1

     a:   600591        0    4.2BSD        0     0         # (Cyl.    0 - 694*)
     c:   600591        0    unused        0     0         # (Cyl.    0 - 694*)

        newfs -b 8192 -f 1024 /dev/ad8s1a
        mount /dev/ad8s1a /mnt

                tar cf - src | tar xpvf - -C /mnt

Or use this script:

Or simply build a (bigger) picobsd release

Soekris Engineering net4521 groot plaatje, stokoude versie ingebouwd in een waterdichte doos en in doos, open.

Null modem kabel

Zie bijvoorbeeld:

Veranderen Seriele Snelheid

De Soekris komt met 19200 of 9600 8n1 uit de fabriek.

Standaard binnen wirelessleiden (en de IT industrie) is 9600, 8N1.

Voor FreeBSD:

Indien je niet naar 9600 gaat, dan ook veranderen:

Voor tijdelijke wisselingen - edit /etc/sysctl.conf en zet daar in machdep.conspeed=XXXX

Using the LED on FreeBSD

Add /dev/soekris-errled device to control the Error-LED on Soekris cards/boxes.

    # turn LED off
    echo '0' > /dev/soekris-errled

    # turn LED on
    echo '1' > /dev/soekris-errled

    # flash LED (5 hz)
    echo 'f' > /dev/soekris-errled

    # flash LED (4/2 = 2 hz), syntax: "f[1-9]" -> .5 -> 4.5 Hz
    echo 'f4' > /dev/soekris-errled

    # flash digits 1,3 and 7, syntax: "d[1-9]*"
    echo 'd137' > /dev/soekris-errled

Using the Watchdog on FreeBSD

See for a sample watchdog.


Beschrijving van de 4521, van de Soekris website :

This compact, low-power, low-cost, advanced communication computer is based on a 133 Mhz 486 class processor. It has two 10/100 Mbit ethernet ports, up to 64 Mbyte SDRAM main memory and uses a CompactFlash module for program and data storage. It can be expanded using a MiniPCI type III board and up to two PC-Card/Cardbus adapters.

It has been optimized for use as wireless router using PC-Card wireless adapters, but has the flexibility to take on a whole range of different functions as a communication appliance. The board is designed for long life and low power.

It will be available in any volume in the standard version, and as board only or complete system inclusive a small metal box and wall mount power transformer. The board can be customized according to requirements when ordering higher volume.

Please note that the available standard case has cutouts for two RP-TNC Jacks for the external antennas, but does not include the connectors and cables. Also, the standard transformer available from soekris is a regular wall mount type, it is not a PoE (PowerOverEthernet) type.




Gebruik voor de soekris een 1.2 A schakelende stekkervoeding (ingesteld op 9 V).

Verkrijgbaar onder typenummer UPA 1200, artikelnummer:511600-89 bij Conrad electronic

10 Mar 2003: power over ethernet oplossing: Volgens Mark Rottler <> werkt de 3com Network Jack PoE module, part number 3CNJPSE van goed ( ~$21 )

Metingen aan de voeding van een Soekris 4521

Soekris 4521 + Koboshi 64Mbyte CF kaart, running FreeBSD 4.8, geen MiniPCI kaartje
Conrad UP 1200 switched mode power supply, set to 9 VDC
Meetapparatuur: Stroom: Fluke 189 DMM, Spanning: Fluke 190 ScopeMeter

1. PCMCIA leeg (Geen PCMCIA kaartjes)
   0.236 A @ 9.04 V (kernel running, ping)
   0.520 A @ 8.84 V (kernel loading, peak)

2. PCMCIA 1 SMC 2632 Wireless pcmcia card
   0.410 A @ 8.90 V (Kernel running, ping over wireless)                
   0.650 A                (booting, peak)            

   0.330 A @ 8.98 V (Kernel running, wireless in Client mode, ping)

4. PCMCIA 2 SENAO 2511PLUS EXT 2 (1 AP, 1 client)
   0.410 A @ 8.91 V (Kernel running, ping over client kaart)       
   0.715 A                (booting, peak)

Aangezien het AP waar de wireless kaartjes aan connecten maar slechts 5 m weg stond zal bij moeilijkere condities er meer stroom lopen (De SENAO kaartjes zullen meer vermogen moeten maken om de link te handhaven, APC)

Battery Backup/UPS on Soekris 4521 van de Soekris Engineering, technical discussion mailing list:


Get a sealed lead-acid battery and a charger works with a parallel load.

For instance from these people [1]:

and you are all set.

I run a 4521 + GPS receiver + Rubidium standard off two 7Ah 12V batteries and that gives me a several hours holdover.

Poul-Henning Kamp <>

Zie de website.


Your SANE easy, packaged way is a cheap UPS. Perhaps some hacking.

But first some options from radio land: and

These are charger circuits. Intended for battery+ solar panel, but "solar panel" is simply a DC power source (like a 16VDC wall wart).

On the saner, easy path: My mom lives in brownout land (long windy road filled with trees and, this winter esp, ice storms every week).

I mocked that her VCR clock was blinking, but she knows that when she sets the VCR clock, it makes the power go out. There's science behind it. I gotta trust mom :)

I blew something like $40 on a little powerstrip UPS. Makes the VCR survive the typical 1-2 minute low power bumps.

It works, like most UPSs, with power into the wall, which charges the 12V battery. Good UPSs isolate wall from the plugs. Power goes out? The battery goes through an inverter to provide 120VAC.

You *could* snag 12V from the battery into a banana plug and power the soekris via that. That eliminates the typical 30% power loss from the inverter. You last longer.

If you go commercial, you get a nice package, a charger that works right, etc.

A bigger battery will not get you more power (more amperage), but can get you backup power LONGER. So my 1500Watt UPS which is starting to want a new battery (it keeps my systems alive for about 7 minutes which is enough to halt and powerdown) might get a large deep cycle battery which would give me hours of backup (but still a 1500 watt max load). Lots of batteries could keep me going for weeks, just no more than 1500 watts of load.

Chuck Yerkes <> _ Soekris Engineering, technical discussion mailing list

seriele console onder debian GNU/LiNu x

Flashen van BIOS

Soekris (last edited 2009-09-28 06:29:42 by localhost)