Chumby Classic

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Chumby Classic

FCC approval date: 16 October 2008
(Est.) initial retail price (in USD): $179.95
Country of manuf.: China

Type: wireless internet appliance

IC ID: 7612A-AA

Power: 12 VDC, 1 A
Connector type: barrel
Conn. measurements: 5.5 mm (OD), 2.1 mm (ID), 9.5 mm (LEN)

CPU1: Freescale Semiconductor i.MX21 (350 MHz)
CPU2: STMicroelectronics STR711FR0
FLA1: 64 MiB67,108,864 B <br />524,288 Kib <br />65,536 KiB <br />512 Mib <br />0.0625 GiB <br /> (Hynix HY27US08121A-TPCB)
RAM1: 64 MiB67,108,864 B <br />524,288 Kib <br />65,536 KiB <br />512 Mib <br />0.0625 GiB <br /> (Hynix HY57V561620FTP-H × 2)

Expansion IFs: USB 2.0
USB ports: 2
Serial: yes, 3.3V TTL

WI1 module: Xterasys XN-3135G
WI1 module IF: USB
WI1 chip1: Ralink RT2571W
WI1 chip2: Ralink RT2528
WI1 802dot11 protocols: bg
WI1 antenna connector: unknown


Flags: touchscreen

802dot11 OUI: none specified

For a list of all currently documented Freescale (NXP) SoC's with specifications, see Freescale.
For a list of all currently documented Ralink chipsets with specifications, see Ralink.
For a list of all currently documented STMicro chipsets with specifications, see STMicro.

Product page

Chumby Wiki

CPU: Freescale Semiconductor i.MX21 - MC9328MX21
The codename for the Chumby Classic is Ironforge.

The Chumby Classic has two external USB 2.0 ports and (per the FCC test report) one internal USB 1.1 port for the wireless module.

In the Maker Shed: Chumby Guts kit on YouTube

Original retail price of $179.95

FCC filing board (old Ironforge revision)

"with love, -bunnie", the Chumby logo, "Ironforge V1."???, and "MADE IN U.S.A." is silkscreened on the main board in the FCC photos.
"Copyright (C)2006,2007", "Chumby Industries", "Some Rights Reserved, see", "", and "Ironforge Daughtercard v1.2" is silkscreened on the daughtercard.

"KW5301" and "V1.3" is silkscreened on the wireless module.
KW5301 googlery yields KASDA as a possible manufacturer, however,
the FCC test report indicates the module was manufactured by TP-LINK

Newer board (via pictures on

"with love, -bunnie", the Chumby logo, "Ironforge v1.7", and
"SETEC ASTRONOMY" is silkscreened on the mainboard.