# PxlBoard

![the back of the pcb held in my hand over some black eyed susans](https://raw.githubusercontent.com/taciturnaxolotl/pxlboard/main/.github/images/banner.jpg)

## BOM

| Part                           | Quantity             | Price  | LCSC                                                                                                                                                                     | Notes                                                                    |
| ------------------------------ | -------------------- | ------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------ |
| PCB (OSHPark)                  | 1                    | $47.25 |                                                                                                                                                                          | Purple PCB; Most expensive manufacturer but also looks gorgeous          |
| PCB (JLCPCB)                   | 1                    | $24.82 |                                                                                                                                                                          | Custom PCB - Green; Mid-range price                                      |
| PCB (PCBWay)                   | 1                    | $12.80 |                                                                                                                                                                          | Custom PCB - Various colors; Most affordable option (kinda suprisingly?) |
| Seeed XIAO RP2040              | 1                    | $3.99  | [Seeed Studio](https://www.seeedstudio.com/XIAO-RP2040-v1-0-p-5026.html)                                                                                                 | Brain of the operation                                                   |
| SK6812 LEDs                    | 65                   | $6.40  | [C5380879](https://www.lcsc.com/product-detail/RGB-LEDs-Built-in-IC_OPSCO-Optoelectronics-SKC6812RGBW-WS-B_C5380879.html?s_z=n_rgbw)                                     | RGB addressable LEDs; $0.0985 each, forms the 8x8 grid                   |
| LIS3DHTR Accelerometer         | 1                    | $0.60  | [C15134](https://www.lcsc.com/product-detail/Accelerometers_STMicroelectronics-LIS3DHTR_C15134.html?s_z=n_LIS3DHTR)                                                      | 3-axis accelerometer; same as the one used on the spark tilt jam         |
| Capacitor 100nF - ceramic      | 20 (min size) need 1 | $0.29  | [C24497](https://www.lcsc.com/product-detail/Multilayer-Ceramic-Capacitors-MLCC-SMD-SMT_Samsung-Electro-Mechanics-CL31B104KBCNNNC_C24497.html?s_z=n_1206%2520100nf)      | 1206 package                                                             |
| Capacitor 10uF - ceramic       | 10 (min size) need 9 | $0.34  | [C13585](https://www.lcsc.com/product-detail/Multilayer-Ceramic-Capacitors-MLCC-SMD-SMT_Samsung-Electro-Mechanics-CL31A106KBHNNNE_C13585.html?s_z=n_10uf%25201206)       | 1206 package                                                             |
| Capacitor 10nf - ceramic       | 20 (min size) need 1 | $0.23  | [C1846](https://www.lcsc.com/product-detail/Multilayer-Ceramic-Capacitors-MLCC-SMD-SMT_FH-Guangdong-Fenghua-Advanced-Tech-1206B103K500NT_C1846.html?s_z=n_10nf%25201206) | 1206 package                                                             |
| Capacitor 100uF - electrolytic | 5 (min size) need 1  | $0.87  | [C1954161](https://www.lcsc.com/product-detail/Tantalum-Capacitors_Vishay-Intertech-TMCMA0J107MTRF_C1954161.html?s_z=n_100uf)                                            | 1206 package                                                             |
| Capacitor 470uF - polymer      | 5 (min size) need 1  | $0.59  | [C41410213](https://www.lcsc.com/product-detail/Polymer-Aluminum-Capacitors_Yunxing-SPT1AM471E09TRVZC_C41410213.html?s_z=n_470uf%252010v%2520polymer)                    | 10V 470uF Polymer ±20% SMD,D6.3xL9mm Polymer Aluminum Capacitors ROHS    |
| USB-c connector                | 5 (min size) need 1  | $0.87  | [C165948](https://www.lcsc.com/product-detail/C165948.html)                                                                                                              | 5A 1 16P Female Type-C SMD USB Connectors ROHS                           |

Total (with pcbway): ~$28.25

## Schematics

> If you want an iteractive version use [`kicanvas`](https://kicanvas.org/?github=https%3A%2F%2Fgithub.com%2Ftaciturnaxolotl%2Fpxlboard%2Fblob%2Fmain%2Fkicad%2Fpxlboard.kicad_pro)!

![schematic](https://raw.githubusercontent.com/taciturnaxolotl/pxlboard/main/.github/images/schematic.svg)

<div align="center">
  <img src="https://raw.githubusercontent.com/taciturnaxolotl/pxlboard/main/.github/images/front.png" width="30%" />
  <img src="https://raw.githubusercontent.com/taciturnaxolotl/pxlboard/main/.github/images/pcb.svg" width="38%" />
  <img src="https://raw.githubusercontent.com/taciturnaxolotl/pxlboard/main/.github/images/back.png" width="30%" />
</div>

### Pinout

#### XIAO RP2040 Connections

| XIAO Pin       | Connected To           | Description    |
| -------------- | ---------------------- | -------------- |
| D0/GPIO26/A0   | -                      | Unused         |
| D1/GPIO27/A1   | -                      | Unused         |
| D2/GPIO28/A2   | -                      | Unused         |
| D3/GPIO29/A3   | -                      | Unused         |
| D4/GPIO6/SDA   | LIS3DHTR SDA           | I2C Data Line  |
| D5/GPIO7/SCL   | LIS3DHTR SCL           | I2C Clock Line |
| D6/GPIO0/TX    | -                      | Unused         |
| D7/GPIO1/RX    | NEOPIXEL_SIG           | LED Data In    |
| D8/GPIO2/SCK   | -                      | Unused         |
| D9/GPIO4/MISO  | -                      | Unused         |
| D10/GPIO3/MOSI | -                      | Unused         |
| 3V3            | LIS3DHTR VDD_IO        | 3.3V Power     |
| GND            | LIS3DHTR GND, LEDs GND | Ground         |
| 5V             | LEDs VDD               | 5V Power       |

#### LIS3DHTR Accelerometer

| LIS3DHTR Pin | Connected To | Description          |
| ------------ | ------------ | -------------------- |
| VDD          | 3.3V         | Power Supply         |
| VDD_IO       | 3.3V         | Interface Power      |
| GND          | GND          | Ground               |
| SDA          | XIAO D4      | I2C Data             |
| SCL          | XIAO D5      | I2C Clock            |
| INT1         | -            | Interrupt (not used) |
| INT2         | -            | Interrupt (not used) |

<p align="center">
	<img src="https://raw.githubusercontent.com/taciturnaxolotl/carriage/master/.github/images/line-break.svg" />
</p>

<p align="center">
	<i><code>&copy 2025-present <a href="https://github.com/taciturnaxolotl">Kieran Klukas</a></code></i>
</p>

<p align="center">
	<a href="https://github.com/taciturnaxolotl/pxlboard/blob/master/LICENSE.md"><img src="https://img.shields.io/static/v1.svg?style=for-the-badge&label=License&message=MIT&logoColor=d9e0ee&colorA=363a4f&colorB=b7bdf8"/></a>
</p>