OpenHardware/DrainDriver

DrainDriver next to its housing, a DN 40 waste water drain pipe

DrainDriver is based on the Carambola2 module by 8devices. It is designed to fit into a DN 40 waste water drain pipe which provides a readily available and weatherproof way of housing the board for outdoor applications.

3D printed DN40 cap for the DrainDriver

DrainDriver provides an open source alternative to similar but proprietary products available from Alfa, MikroTik or Ubnt. It features a two-sided board design and a one-sided population with components.

Performance Features

• CPU: AR9331, 400 MHz
• Memory: 16 MB Flash and 64 MB DDR2 RAM
• WLAN Frequency: 2.4 GHz
• Max output power: 21 dBm
• Wireless standards: 802.11 bgn
• Antenna port: standard SMA
• Power supply: max. 24 V via passive PoE, Power Consumption 0.5 W (w/o USB)
• Available interfaces: USB host, 2 x Ethernet, Serial Port (Pin header, TTL)
• Board dimensions: 37 mm x 77 mm (without SMA and Ethernet jacks)
• Software: OpenWrt

Schematic

Layout

Bill of Materials (PCB Population)

Part	Value	Device	Package	Description	RS	Farnell
C2	100n	C-EUC0603	C0603	CAPACITOR, European symbol	723-5672
C3	100n	C-EUC0603	C0603	CAPACITOR, European symbol	723-5672
C10	100n	C-EUC0603	C0603	CAPACITOR, European symbol	723-5672
C11	220p	C-EUC0603	C0603	CAPACITOR, European symbol	723-5694
C12	10u 0805	C-EUC0805	C0805	CAPACITOR, European symbol	723-6023
C13	10u 0805	C-EUC0805	C0805	CAPACITOR, European symbol	723-6023
C14	100n	C-EUC0603	C0603	CAPACITOR, European symbol	723-5672
C15	220p	C-EUC0603	C0603	CAPACITOR, European symbol	723-5694
C16	100n	C-EUC0603	C0603	CAPACITOR, European symbol	723-5672
C17	220p	C-EUC0603	C0603	CAPACITOR, European symbol	723-5694
C18	220p	C-EUC0603	C0603	CAPACITOR, European symbol	723-5694
C19	220p	C-EUC0603	C0603	CAPACITOR, European symbol	723-5694
C21	220p	C-EUC0603	C0603	CAPACITOR, European symbol	723-5694
IC1	3V3	78XXLSIP3	SIP3	VOLTAGE REGULATOR	532-8044
IC2	5V0	78XXLSIP3	SIP3	VOLTAGE REGULATOR	532-8050
L5		WE-CBF_0805	C0805	SMD EMI Suppression Ferrite Beads WE-CBF	669-4109
L6		WE-CBF_0805	C0805	SMD EMI Suppression Ferrite Beads WE-CBF	669-4109
L7		WE-CBF_0805	C0805	SMD EMI Suppression Ferrite Beads WE-CBF	669-4109
L8		WE-CBF_0805	C0805	SMD EMI Suppression Ferrite Beads WE-CBF	669-4109
L9		WE-CBF_0805	C0805	SMD EMI Suppression Ferrite Beads WE-CBF	669-4109
L10		WE-CBF_0805	C0805	SMD EMI Suppression Ferrite Beads WE-CBF	669-4109
L11		WE-CBF_0805	C0805	SMD EMI Suppression Ferrite Beads WE-CBF	669-4109
L12		WE-CBF_0805	C0805	SMD EMI Suppression Ferrite Beads WE-CBF	669-4109
L13		WE-CBF_0805	C0805	SMD EMI Suppression Ferrite Beads WE-CBF	669-4109
LED1	eth0	LEDCHIPLED_0603	CHIPLED_0603	LED	692-0935
LED2	eth1	LEDCHIPLED_0603	CHIPLED_0603	LED	692-0935
LED3	wlan	LEDCHIPLED_0603	CHIPLED_0603	LED	692-0935
R1	120 R	R-EU_R0603	R0603	RESISTOR, European symbol	740-8820
R2	120 R	R-EU_R0603	R0603	RESISTOR, European symbol	740-8820
R3	120 R	R-EU_R0603	R0603	RESISTOR, European symbol	740-8820
SJ3		SJ	SJ	SMD solder JUMPER
SV1		MA05-1	MA05-1	PIN HEADER
U$1	CARAMBOLA2	CARAMBOLA2	CARAMBOLA2
U$3	SMA_PCB	SMA_PCB	SMA_PCB		526-5779
U$5	7499211002A	7499211002A	7499211002A			2356106
U$9	MB2S	MB2S	SOIC-4		629-0300
U$15	PESD_SOT353	PESD_SOT353	SOT-353		509-162
U$16	PESD_SOT353	PESD_SOT353	SOT-353		509-162
U$17	7499211002A	7499211002A	7499211002A			2356106
USB1	USB-A-H	USB-A-H	USB-A-H	USB Connectors

Files

CC BY-SA 3.0 Layout (remove the .odt)

CC BY-SA 3.0 Schematic (remove the .odt)