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BOM
Eivind Bøhler edited this page Oct 17, 2022
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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. Alternatively, make the necessary changes to the KiCad board layout before ordering the PCB.
| Description | Suggested source |
|---|---|
| TinyLlama PCB | Build your own |
| SOM-128-EX | DMP |
| Vortex86VGA | DMP |
| Raspberry Pi Zero 2 W | Raspberry Pi Foundation, rpilocator, eBay |
| 0.91 inch OLED display | AliExpress |
| 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:C163508 |
| C7 | Capacitor | 2.7nF | 0603 | 1 | LCSC:C1609 |
| C8 | Capacitor | 10nF | 0603 | 1 | LCSC:C57112 |
| C9-C28 | Capacitor | 0.1uF | 0603 | 20 | LCSC:C14663 |
| C29 | Capacitor | 1uF | 0805 | 1 | LCSC:C28323 |
| C30-C35 | Capacitor | 10uF | 0805 | 6 | LCSC:C440198 |
| C36,C37 | Capacitor | 47uF | 1206 | 2 | LCSC:C96123 |
| D1 | LED | RED | 0603 | 1 | JLCPCB:C2286, LCSC:C965798 |
| D2,D3 | LED | YELLOW | 0805 | 2 | JLCPCB:C2296, LCSC:C965814 |
| D4 | Diode | 1N4148 | SOD-323 | 1 | LCSC:C2128 |
| L1,L2 | Common mode filter | 90Ω@100MHz | 2 | LCSC:C315725 | |
| 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 | 620Ω | 0603 | 3 | LCSC:C23220 |
| R13 | Resistor | 1kΩ | 0603 | 1 | LCSC:C21190 |
| R14-R17 | Resistor | 4.7kΩ | 0603 | 4 | LCSC:C23162 |
| R18-R21 | Resistor | 6.8kΩ | 0603 | 4 | LCSC:C23212 |
| R22,R23 | Resistor | 10kΩ | 0603 | 2 | LCSC:C25804 |
| R24 | Resistor | 20kΩ | 0603 | 1 | LCSC:C4184 |
| R25-R31 | Resistor | 47kΩ | 0603 | 7 | LCSC:C25819 |
| F1 | Fuse | 1206 | 1 | LCSC:C151163 | |
| F2,F3 | Fuse | 0603 | 2 | LCSC:C207017 | |
| FB1,FB2 | Filter bead | 0805 | 2 | LCSC:C1017 | |
| J1 | Micro-B USB connector | 1 | LCSC:C132563 | ||
| J2 | Mini-PCIe connector | 1 | LCSC:C186111 | ||
| J3 | MicroSD connector | 1 | LCSC:C91145 | ||
| J4 | 2xType A USB connector | 1 | LCSC:C12049 | ||
| J5 | 2x20pin 2.54mm receptacle | 1 | LCSC:C169819 | ||
| J6 | 3.5mm audio jack | 1 | LCSC:C95463 | ||
| JP1,P3,P5 | 1x3pin header | 3 | LCSC:C124376 | ||
| P1 | 2x32pin header (x2) | 1 | DMP | ||
| P2 | DE9M connector | 1 | LCSC:C75750 | ||
| P4 | 1x4pin header | 1 | LCSC:C124378 | ||
| Q1 | NPN BJT transistor | SOT-23-3 | 1 | LCSC:C2146 | |
| SP1 | Magnetic transducer (pc speaker) | 12mm, 6.5mm lead spacing | 1 | AliExpress | |
| SW1 | Latching push-button | 1 | LCSC:C231742, Mouser:688-SPPH420100 | ||
| SW2-SW4 | Momentary push-button | 3 | LCSC:C202363 | ||
| U1 | 3.3V LDO | SOT-223-3 | 1 | LCSC:C6186 | |
| U2 | CS4237B-KQ audio IC | TQFP-100 | 1 | eBay, Utsource | |
| U3 | 24LC08 8K I²C EEPROM | SOIC-8 | 1 | LCSC:C5455 | |
| U4 | GY-PCM5102 DAC module | 1 | AliExpress | ||
| U5 | 74LVC1G04 inverter | SOT-23-5 | 1 | LCSC:C7827 | |
| U6 | MAX3243 RS232 transciever | SOT-23-5 | 1 | LCSC:C6853 | |
| X1 | Crystal | 16.9344 MHz | HC-49-SMD | 1 | Mouser:815-ABLSG-16.93-D2YT, Digi-Key:535-10228-1-ND |
© Eivind Bøhler 2021-2022. Released under the GNU General Public License v3.0