ZBox
About the ZBox PCB
ZBox is an open source PCB design by dkej123, published on GitHub under the MIT license. It is a 2-layer board measuring 58 × 64.5 mm, with 19 components from 18 distinct parts.
Other key parts include the STEPUP_MT3608. By type, the board carries 9 connectors, 6 resistors, 2 transistors, 1 IC and 1 capacitor.
It belongs with the audio, iot & wireless and power & battery designs in this gallery.
From the project
Offline-first ESP32 NFC audio box with local MP3 playback, LEDs, web admin, PCB and 3D-printable enclosure.
zBox is an offline-first ESP32 NFC audio box: tap a card to play an MP3 from microSD, use four physical buttons for playback and modes, and manage music and mappings from a small FastAPI web portal. Wi-Fi is needed only for provisioning, synchronization, and maintenance.
- [ ] Lolin D32 Pro (ESP32), PN532 SPI NFC module, NS4168 I2S amplifier, and 4–8 Ω speaker - [ ] MT3608 boost module, 12-pixel WS2812B strip/panel, and four momentary buttons - [ ] 3.7 V LiPo, USB-C power/charging connection, hookup wire, PCB/protoboard, and solder - [ ] Printed enclosure parts, M3 heat-set inserts, M3/M4…
Main components on the ZBox
ZBox bill of materials (BOM)
19 components, 18 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STEPUP_MT3608 | MT3608_Pancake | U2 |
| 1 | BC547 | TO-92_Inline | Q1 |
| 1 | AO3415A | SOT-23 | Q2 |
| 1 | USB_C_Receptacle_USB2.0_14P | USB_C_Receptacle_GCT_USB4085 | J1 |
| 1 | PAD_BAT_LIPO | SolderPad_1x02_W2.2mm_H3mm_P2.7mm | J2 |
| 1 | PAD_PN532_SPI | SolderPad_1x06_W2.2mm_H3mm_P2.7mm | J3 |
| 1 | PAD_BUTTONS | SolderPad_1x05_W2.2mm_H3mm_P2.7mm | J7 |
| 1 | ESP_LEFT | PinHeader_1x16_P2.54mm_Vertical | J8 |
| 1 | ESP_RIGHT | PinHeader_1x16_P2.54mm_Vertical | J9 |
| 1 | PAD_JBL | SolderPad_1x03_W2.2mm_H3mm_P2.7mm | J10 |
| 1 | PAD_LED_WS2812B | SolderPad_1x03_W2.2mm_H3mm_P2.7mm | J11 |
| 1 | PAD_JBL_PWR | SolderPad_1x02_W2.2mm_H3mm_P2.7mm | J12 |
| 1 | 470µF | CP_Radial_D8.0mm_P3.50mm | C1 |
| 2 | 5.1k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2 |
| 1 | 2.2k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3 |
| 1 | 10k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6 |
| 1 | 22k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R7 |
| 1 | 100k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R8 |
ZBox design files
The KiCad project lives in the dkej123/zBox repository on GitHub; these links point at the commit this page was built from.
ZBox: common questions
How big is the ZBox PCB?
The ZBox measures 58 × 64.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the ZBox?
19 components, from 18 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 ZBox design files?
From the dkej123/zBox 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 ZBox design in my own project?
Yes, under the terms of its MIT license, which dkej123 chose for the repository.
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