It's an arm based single board made of an allwinner a13 soc and some auxiliary ic's into a single layer board, aiming towards keeping it's design simple and easy to repair and have long lifetme, given it is being developed with difficult environments and versatility on mind.
Dear supporter: This project has reached a major milestone: the circuit has been completely routed using 3 layers. On November 22 of 2017, the files have been replaced by the new successfull ones.
Further Updates: Now the drawings of the layers are available as .svg files. Please have in mind they are still a work in progress too and may still lead to a board that may need further improvements. you can see them here: https://github.com/temporaryuser132/wakameboard/tree/master/gerbertosvg
The ultimate goal of this project is to achieve a pcb drawing that does not requre multiple layer pcb, even if jumpers and bridges are necessary, so this is what it is being yet on the works. However if you wish to get a multilayer board manufactured by any facility, you can just pull the files and use them.
Further Notice: This project is still marked as "Work in Progress, BOM may change". However no real Bill of Materials (BOM) and/or schematic may take change unless an upcoming prototype shows some sort of modification be required. In the case you build the machine, it is very important that you give notice to the forum related to this website, be the final outcome a perfectly working Wakame machine, a partially working or even a total failure, this board need your experience and / or collaboration to get better as this is totally open hardware made with collaboration and not profit in mind, so in the case you can notice something incorrect in any aspect of this device, please do not hesitate on telling in the forum. This project needs further people trying to improve it.
Thank you for your attention.
|Cap||Capacitor||C1, C4, C6, C7, C8, C10, C11, C12, C13, C14, C15, C16, C18, C19, C20, C21, C22, C26, C27, C28, C29, C31, C32, C33, C34, C35, C36, C37, C38, C39, C40, C41, C42, C43, C44, C45, C46, C47, C48, C49, C50||RAD-0.3||Cap||47|
|.||Capacitor||C3, C5, C9||RAD-0.3||Cap||3|
|.||D1, D2, D3||DIODE_DO35-7||SCHOTTKY-DIODEDO35-7||3|
|D Zener||Zener Diode||D4||DIODE-0.7||D Zener||1|
|AT25*P||SPI bus serial EEPROM||IC4||DIL08||AT25*P||1|
|Micrel MIC2026||Micrel MIC2026 Dual-Channel Power Distribution Switch||IC*1, IC*2, IC*3||8uSOP||MIC2026||3|
|ZeroOhm||Bridge 0R 10mm||J25||0R/10||0R||1|
|L-USL8530M||INDUCTOR, American symbol||L12||L8530M||L-USL8530M||1|
|AD558JD||Imported||PCMBlue1, PCMGreen1, PCMRed1||DIP16||AD558JD||3|
|Res1||Resistor||R1, R6||AXIAL-0.3||Res1, Res3||2|
|Res2||Resistor||R1, R8, R9, R10, R11, R12, R13, R14, R15, R16||AXIAL-0.4||Res2||10|
|Res3||Resistor||R2, R3, R4, R5||J1-0603||Res3||4|
|749010012A||10/100 Base-T SMD Transformer 1 Port||T1||749010012A||749010012A||1|
|L78L05ABZ||Positive Voltage Regulator||U1||TO92||L78L05ABZ||1|
|3.3V positive regulator||Positive Voltage Regulator||U2||MAX247||L78L05ABZ||1|
|K4S510432B-TC75||512Mb Synchronous High Data Rate DRAM, 32Mb x 4Bit x 4 Banks, 54-Pin TSOP||U2||54_TSOP2_400AF_N||K4S510432B-TC75||1|
|3.3V positive regulator (VCC)||Positive Voltage Regulator||U3||MAX247||L78L05ABZ||1|
|3.0V positive regulator||Positive Voltage Regulator||U4||MAX247||L78L05ABZ||1|
|1.3V positive regulator (VDD)||Positive Voltage Regulator||U5||MAX247||L78L05ABZ||1|
|1.2V positive regulator||Positive Voltage Regulator||U6||MAX247||L78L05ABZ||1|
|1.5V positive regulator||Positive Voltage Regulator||U7||MAX247||L78L05ABZ||1|
|2.0V positive regulator||Positive Voltage Regulator||U8||MAX247||L78L05ABZ||1|
|AXP202||Allwinner a13 pwr ic||U$4||QFN48||AXP202||1|
|PWR||Main Power Jack||U$6||SCD-014-A||PWR||1|
|USB2507||usb 2507 hub on chiip||U$11||TQFP80||USB2507||1|
|USB-A003||USB connector||X2, X3, X4, X5, X6, X7||USB-A003||USB-A003||6|
|XTAL||Crystal Oscillator||Y1, Y2, Y3||R38||XTAL||3|