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2 layers48.5 × 48.6 mmHandle bar, the printed circuit board in 3D
Size
48.5 × 48.6 mm
Copper layers
2
Thickness
1.6 mm
Parts
18
Nets
24
Pads
65
Tracks, vias
168, 7
Routed
Yes
KiCad
KiCad 6 (file 20211014)
Created
27 Jul 2026
Updated
3 Aug 2026

Overview

Handle bar is an open-source printed circuit board by basic-bitch-foundation, from the basic-bitch-foundation/Traffic repository on GitHub. It is a 2-layer board of 48.5 × 48.6 mm with 18 parts on 24 nets, routed with 168 tracks and 7 vias.

It is built around the XIAO ESP32C3 and WS2812B. Its parts include 6 connectors, 4 capacitors, 3 diodes, 2 resistors and 2 ICs. It belongs with the ESP32 and RISC-V boards of this library.

Main components

2

Parts

18
QtyValueFootprintReferences
3WS2812BLED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mmD1, D2, D3
24.7Capacitor_THT:C_Disc_D6.0mm_W2.5mm_P5.00mmC2, C3
110ufCapacitor_THT:C_Disc_D7.5mm_W5.0mm_P5.00mmC1
1220koResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_HorizontalR2
122ufCapacitor_THT:CP_Radial_D5.0mm_P2.50mmC4
12kΩResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_HorizontalR1
1BATsolderwirepad_1_02_SMD:SolderWirePad_1x02_SMD_5x5mmJ4
1HRN_SWsolderwirepad_1_02_SMD:SolderWirePad_1x02_SMD_5x5mmJ3
1MAX98357A 3V3solderwirepad_1_02_SMD:SolderWirePad_1x07_SMD_1x3mmJ2
1MCP73831-2-OTPackage_TO_SOT_SMD:SOT-23-5U2
1PS2solderwirepad_1_02_SMD:SolderWirePad_1x05_SMD_1x3mmJ5
1PWR_SLIDEsolderwirepad_1_02_SMD:SolderWirePad_1x02_SMD_5x5mmJ3
1SW_SPSTsolderwirepad_1_02_SMD:SolderWirePad_1x02_SMD_5x5mmPWR1
1USBsolderwirepad_1_02_SMD:SolderWirePad_1x02_SMD_5x5mmJ6
1XIAO_ESP32C3XIAO_ESP32C3:MODULE_XIAO_ESP32C3U1

Questions

How big is the Handle bar PCB?

It measures 48.5 × 48.6 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Handle bar use?

18 parts, built around the XIAO ESP32C3 and WS2812B. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Handle bar KiCad files?

From the basic-bitch-foundation/Traffic repository on GitHub, at the commit this page was made from: the board is handle_bar/handle_bar.kicad_pcb and its schematic handle_bar/handle_bar.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Handle bar design in my own project?

Its repository states no licence, so its author keeps all rights: ask basic-bitch-foundation before reusing the design.

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