Slimarm carambola

jlywxy·slimarm·board/slimarm_carambola/pcb_slimarm_carambola-r_b/slimarm_carambola.kicad_pcb

Slimarm carambola PCB layout, top view — open source board by jlywxy

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About the Slimarm carambola PCB

Slimarm carambola is an open source PCB design by jlywxy, published on GitHub under the GPL-2.0 license. It is a 4-layer board measuring 50 × 39.9 mm, with 84 components from 28 distinct parts.

Other key parts include the AT91SAM9G25-CU, 16bit-DDR2-8bank-FBGA84, 3.3V, MAX811LEUS-T and AMS1117. By type, the board carries 40 capacitors, 28 resistors, 6 ICs, 5 connectors, 3 diodes and 1 crystal.

From the project

custom-made boards of ARM processors

(do not use at91sam9x5ek configuration) * DDR read/write stability test. use RAMStepper: (build binary)

this program writes to DDR SDRAM sequentially and reads out & compare data sequentially.

Main components on the Slimarm carambola

AT91SAM9G25-CU 16bit-DDR2-8bank-FBGA84 3.3V MAX811LEUS-T AMS1117 XC6206PxxxMR

Slimarm carambola bill of materials (BOM)

84 components, 28 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	AT91SAM9G25-CU	AT91SAM9G25_JKT	U1
1	16bit-DDR2-8bank-FBGA84	BGA84_DDR2	U2
1	3.3V SY8089AAAC	SY8089	U3
1	MAX811LEUS-T	SOT-143	U4
1	AMS1117	SOT-89-3	U5
1	XC6206PxxxMR	SOT-89-3	U7
1	Crystal	Crystal_SMD_5032-2Pin_5.0x3.2mm	Y1
1	USB_C_Receptacle_USB2.0	USB_TYPEC_Receptacle	J1
1	Conn_02x15_Top_Bottom	Hirose_DF12_DF12E3.0-30DP-0.5V_2x15_P0.50mm_Vertical	J2
1	Micro_SD_Card_Det2	microSD_HC_Molex_104031-0811	J3
1	DF13A-7P-1.25H21	DF13A-7P-1.25H21	J4
1	Conn_01x03	PinHeader_1x03_P2.54mm_Vertical	J5
3	LED	LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder	D1, D2, D3
1	L	L_Sunlord_SWPA3015S	L1
2	4.7PF 100nF	0402	C1, C2
23	100NF 100nF	0402	C3, C4, C7, C8, C9, C10, C13, C14 +15
2	100nF	0402	C5, C11
2	22PF 100nF	0402	C6, C12
1	22pF	0402	C17
10	100NF 22pF	0402	C18, C26, C27, C29, C31, C32, C33, C34 +2

Show 8 more

Qty	Part	Footprint	Refs
5	5.1k	0402	R1, R2, R10, R11, R28
1	6.8k	0603	R3
1	75k	0603	R4
4	39	0603	R5, R7, R26, R27
1	51k	0603	R6
3	5.6k	0603	R8, R20, R21
11	10k	0402	R9, R12, R13, R16, R17, R18, R19, R22 +3
2	1.5k	0603	R14, R15

Slimarm carambola design files

The KiCad project lives in the jlywxy/slimarm repository on GitHub; these links point at the commit this page was built from.

Slimarm carambola: common questions

How big is the Slimarm carambola PCB?

The Slimarm carambola measures 50 × 39.9 mm, has 4 copper layers and is 1.198052 mm thick.

How many components are on the Slimarm carambola?

84 components, from 28 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Slimarm carambola design files?

From the jlywxy/slimarm repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Slimarm carambola design in my own project?

Yes, under the terms of its GPL-2.0 license, which jlywxy chose for the repository.

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