Loml-1989/USB2BLEUSB2BLE is an open-source printed circuit board by Loml-1989, from the Loml-1989/USB2BLE repository on GitHub. It is a 2-layer board of 27.6 × 33 mm with 12 parts on 29 nets, routed with 42 tracks and 1 via.
It is built around the MT3608. Its parts include 3 capacitors, 2 resistors, 2 ICs, 1 diode and 1 connector. It belongs with the ESP32 boards of this library.
USB2BLE is a project designed to convert a USB controller into a Bluetooth gamepad. It uses a Seeed Studio XIAO ESP32 S3 acting as a USB Host to read the USB.
Assembly hardware requires M2 x 8mm Socket Head Cap screws. The space under the PBC is meant to for the flat LiPo battery pack. Link: https://cad.onshape.com/documents/79600c89bc90443b04a0eccc/w/c9c8aab0a155c9fbc029d97b/e/64e19027fa4e67c0d8740c29
Because the ESP32 S3 must act as a USB host, this project relies on the native ESP32 TinyUSB stack. Currently the firmware DOES NOT work to translate the controller's inputs. The current firmware prints the output data when a button is pressed the reason is that every controller has different mappings so first we need to find that mapping then map it in the firmware only then it will work.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 22uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2 |
| 1 | 15k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | 2.2k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2 |
| 1 | 22uH | Inductor_SMD:L_Taiyo-Yuden_NR-20xx | L1 |
| 1 | 30p | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3 |
| 1 | Conn_01x02 | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J1 |
| 1 | D_Schottky | Diode_SMD:D_SMA | D1 |
| 1 | MT3608 | Package_TO_SOT_SMD:SOT-23-6 | U2 |
| 1 | SW_SPDT | Button_Switch_THT:SW_Slide_SPDT_Straight_CK_OS102011MS2Q | SW1 |
| 1 | XIAO-ESP32-S3-SMD | New_XIAO_Series_Footprints:XIAO-ESP32-S3-SMD | U1 |
The 11 most common of 12 parts.
It measures 27.6 × 33 mm and has 2 copper layers, 1.6 mm thick.
12 parts, built around the MT3608. 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.
From the Loml-1989/USB2BLE repository on GitHub, at the commit this page was made from: the board is pcb/_restore_backup_2026-10-16T20-02-44-426/USB2BLE.kicad_pcb and its schematic pcb/USB2BLE.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask Loml-1989 before reusing the design.
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