BOM

The BOM (Bill-of-Materials) is your shopping list for building your own TinyLlama.

The parts listed under "suggested source" are tested and verified to work with the TinyLlama PCB. If you want or need to substitute any parts, be very careful in checking specs and dimensions.

If the footprints differ, make the necessary changes to the KiCad board layout before ordering the PCB.

Note: I give no guarantees that this list is 100% correct or complete - do your own due dilligence. If you find any errors, please let me know!

Boards and modules

Description	Suggested source
TinyLlama PCB	Build your own
SOM-128-EX	DMP
1.27mm 2 x 32 pin headers (2x)	DMP
Vortex86VGA	DMP
Wemos D1 Mini V4	Aliexpress
Raspberry Pi Zero 2 W	Raspberry Pi Foundation, rpilocator, eBay
0.91 inch OLED display	AliExpress

TinyLlama PCB components

Reference	Description	Value	Footprint notes	Quantity	Suggested source
BT1	Battery holder	CR1220		1	LCSC:C964818
C1,C2	Capacitor	22pF	0603	2	LCSC:C1653
C3-C6	Capacitor	1nF	0603	4	LCSC:C309468
C7	Capacitor	2.7nF	0603	1	LCSC:C1609
C8	Capacitor	10nF	0603	1	LCSC:C57112
C9-C30	Capacitor	0.1uF	0603	22	LCSC:C14663
C31	Capacitor	1uF	0805	1	LCSC:C28323
C32	Capacitor	3.3uF	0603	1	LCSC:C51412
C33-C38	Capacitor	10uF	0805	6	LCSC:C15850
C39-C46	Capacitor	47uF	1206	8	LCSC:C96123
D1	Diode	1N4148	SOD-323	1	LCSC:C2128
D2	LED	RED	0603	1	JLCPCB:C2286, LCSC:C965798
D3,D4	LED	YELLOW	0805	2	JLCPCB:C2296, LCSC:C965814
F1-F4	Fuse		0603	2	LCSC:C207017
FB1,FB2	Filter bead		0805	2	LCSC:C1017
J1	USB-C connector			1	LCSC:C165948
J2	Mini-PCIe connector			1	LCSC:C186111
J3	3.5mm audio jack			1	LCSC:C95463
J4	MicroSD connector			1	LCSC:C91145
J5,J6	2xType A USB connector			2	LCSC:C12049
J7	2x20pin 2.54mm receptacle			1	LCSC:C3975165
J8A,J8B	1x8 pin header			2	LCSC:C124381
JP2,JP3,P4	1x2 pin header			3	LCSC:C124375
JP1,P2,U7B	1x3 pin header			3	LCSC:C124376
P5	1x4 pin header			1	LCSC:C124378
P6	1x5 pin header			1	LCSC:C124379
U7A	1x6 pin header			1	LCSC:C124380
L1-L4	Common mode filter	90Ω@100MHz		4	LCSC:C315725
P3	DE9M connector			1	LCSC:C141880
Q1	P-channel MOSFET		SOT-23-3	1	LCSC:C155244
Q2	NPN BJT transistor		SOT-23-3	1	LCSC:C2146
R1	Resistor	0Ω	0603	1	LCSC:C21189
R2-R7	Resistor	33Ω	0603	6	LCSC:C23140
R8	Resistor	200Ω	0603	1	LCSC:C8218
R9	Resistor	470Ω	0603	1	LCSC:C23179
R10-R12	Resistor	1kΩ	0603	3	LCSC:C21190
R13	Resistor	1.5kΩ	0603	1	LCSC:C22843
R14-R21	Resistor	4.7kΩ	0603	8	LCSC:C23162
R22,R23	Resistor	5.1kΩ	0603	2	LCSC:C23186
R24-R27	Resistor	6.8kΩ	0603	4	LCSC:C23212
R28,R29	Resistor	10kΩ	0603	2	LCSC:C25804
R30	Resistor	20kΩ	0603	1	LCSC:C4184
R31-R38	Resistor	47kΩ	0603	8	LCSC:C25819
SP1	Magnetic transducer (pc speaker)		12mm, 6.5mm lead spacing	1	LCSC:C252917
SW1-SW6	Momentary push-button			6	LCSC:C231324
U1	MAX16054 on/off controller		SOT-23-6	1	LCSC:C79401
U2	3.3V LDO		SOT-223-3	1	LCSC:C6186
U3	CS4237B-KQ audio IC		TQFP-100	1	eBay, Utsource
U4	74LVC1G04 inverter		SOT-23-5	1	LCSC:C7827
U5	K24C08 8K I²C EEPROM		SOT-23-5	1	LCSC:C123842
U6	MAX3243 RS232 transciever		SOT-23-5	1	LCSC:C6853
U7	GY-PCM5102 DAC module			1	AliExpress
U8	CH559 MCU		QFP-48	1	LCSC:C150548
X1	Crystal	16.9344 MHz	HC-49S-MINI	1	LCSC:C4944017