## Features and Components ### Core *See [research/cpu]() for an overview of the **many** low-cost embedded processors which have been announced, and a justification of this component selection.* The Freescale i.MX6 series ARM processors An external power management/regulator chip is required to provide stable voltage for this chip. ### Wireless The miniPCIe slot allows flexibility in selecting an appropriate dual-band 802.11n card; see [research/miniPCIe]() for a list of options and issues. Atheros-based devices supporting the non-blob [ath9k](http://wireless.kernel.org/en/users/Drivers/ath9k) or [ath5k](http://wireless.kernel.org/en/users/Drivers/ath5k) drivers with access point mode are shipped in some laptops and are frequently available used on amazon.com for less than $15. [thinkpenguin.com](https://www.thinkpenguin.com/gnu-linux/penguin-wireless-n-mini-pcie) sells such a device new for $35, as does [netgate.com](http://store.netgate.com/WLE200NX-80211nabg-miniPCIe-Card-P1763C29.aspx) for $45. An antenna would also be required; SparkFun sells adapters for [$5](https://www.sparkfun.com/products/662), so I will budget $5 for an adapter plus antenna. - ARM SoC, Freescale i.MX6 - Power management/regulator IC for SoC - 512MB RAM - No onboard FLASH, 8GB+ uSD card - WiFi - full-size miniPCIe slot for off-the-shelf dual-band card - 802.15.4 - all-in-one stm32w chip, trace antenna (?) - Ethernet - GigE switch chip w/ PHY, 5 ports - 4x LAN jacks with drivers for longer cable runs (w/ LEDs) - 1x WAN jack - Power - 5/12v regulator, ~1amp - Power connector - Reverse voltage diode - USB Host jack - USB mini jack for UART/JTAG/Mass storage (how? USB2 hub?) - Second SD or uSD connector (for expansion) - status LEDs and drivers (PWM from SoC?) - reset button - power switch An alternative "minimal" feature set device is described at [design/minimal_design](). ## Proposed BOM and Costs (August 2012) The rough cost analysis below guesses component pricing for a production run of 1,000 units; the PCB fabrication and assembly numbers are probably more realistic for at least 10,000 units. These are *prices* of components (what would need to be paid on the market), resulting in the *cost* of production; the *price* of the final device would be higher than the cost to cover risk and additional development and logistical expenses. For an initial release we can ship with used WiFi cards (or let people source their own), so I will budget $15. Devices would ship with no SATA disk by default.

Subsystem	What	MFG	MPN	Qty	Cost @1k	Total	Notes
Core	ARM SoC	Freescale	i.MX6 dual lite	1	$22.00	$22.00	“gossip”
	512MB RAM	Hynix	H5TQ4G63MFR	1	$15.00	$15.00	Wrong bitwidth, cost reference only
	Microcontroller	Stmicro	STM32F100R4H6B	1	$1.40	$1.40
	Entropy circuit			1	$1.50	$1.50	Associated project...

Wireless	miniPCIe WiFi card			1	$10.00	$10.00	Budgeting price of used cards
	802.15.4 TX/RX	TI	CC2520	1	$2.50	$2.50
	miniPCIe slot	Tyco	2041119-1	1	$0.36	$0.36

Ethernet	Switch chip	Realtek	RTL8366SR-GR	1	$10.00	$10.00	Guess, can't find quote...
	5x Ethernet port strip	Tyco	5557563-1	1	$4.25	$4.25	Includes magnetics

Storage	SD Slot	ALPS	SCHA5B0200	1	$1.00	$1.00
	8GB uSD card			1	$6.00	$6.00	Budgeting price
	microSD slot		114-00841-68	1	$0.70	$0.70
	SATA conn	Molex	678007001	1	$0.40	$0.40
	SATA power conn	Molex	679260011	1	$0.50	$0.50

USB	Dual USB Host conn.	Assmann	87520-0010BLF	1	$0.40	$0.40
	USB Mini	FCI	10104110-0001LF	1	$0.35	$0.35
	Voltage Protect	On semi	NCP349MNAETBG	1	$0.36	$0.36
	USB-to-serial	FTDI	FT232HQ	1	$2.25	$2.25
	USB 2.0 hub	SMC	USB2514B	1	$2.10	$2.10

Power	Inductor	TDK	VLCF5020T-2R2N2R6-3	3	$0.90	$2.70
	Voltage Protect	On semi	NCP349MNAETBG	1	$1.00	$1.00
	ARM SoC Pwr	Freescale	MC34708VKR2	1	$4.25	$4.25	i.mx53 PMIC for reference
	Regulator	TI	TPS73701DRBR	1	$0.95	$0.95

Other Comp	Passives			100	$0.01	$0.50	Most of these are just fudged numbers
	LEDs	Dialight	598-8170-107F	4	$0.05	$0.20
	Diode			4	$0.10	$0.40
	Power Jack	CUI	PJ-002A	1	$0.30	$0.30
	Buffer	TI	SN74LVC2G07DCKR	2	$0.12	$0.24
	Transistors			3	$0.20	$0.60
	Button	Omron	B3U-1100P	4	$0.55	$2.20
	Crystal	Epson	MC-30632.7680k-A	4	$0.30	$1.20
	Fudge Electronics			1	$5.00	$5.00

Production	6 Layer PCB			1	$8.00	$8.00
	Assembly			1	$8.00	$8.00

TOTAL						$116.61