2 layers69 × 34.5 mm
Lora ch1
0x000f1/lora-ch1
This project is based on the ESP32 microcontroller that behaves like a bridge between mobile devices and the modules.
37 parts
2 layers40 × 50 mm
Refremotepcb2
seanconway/refremote-v0RefRemote PCB hardware revisions (KiCad + Gerbers)
- Size
- 40 × 50 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 61
- Nets
- 57
- Pads
- 235
- Tracks, vias
- 457, 133
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 15 Sep 2026
- Updated
- 15 Sep 2026
Overview
Refremotepcb2 is an open-source printed circuit board by seanconway, from the seanconway/refremote-v0 repository on GitHub. It is a 2-layer board of 40 × 50 mm with 61 parts on 57 nets, routed with 457 tracks and 133 vias.
It is built around the ESP32-C3-MINI-1, DRV2605LDGS and LIS3DH, with the XC6220B331MR among its other parts. It belongs with the ESP32 and RISC-V boards of this library.
Main components
4ESP32-C3-MINI-1
--40℃~+81℃ -89dBm 2.4GHz 350mA 3V~3.6V 82mA ESP32-C3 Chip On-board PCB Antenna UART - WiFi Modules ROHSRF CrazyWiFi Modules
DRV2605LDGS
VSSOP-10-0.5mm-40℃~+85℃ 1 2V~5.2V 500uA I2C Yes VSSOP-10-0.5mm Brushed DC Motor Drivers ROHSTexas InstrumentsBrushed DC Motor Drivers
LIS3DH
LGA-16(3x3)-40℃~+85℃ 1.71V~3.6V 16bit 500nA Accelerometer Motion event detection SPI、I2C X,Y,Z ±16g LGA-16(3x3) Accelerometers ROHSSTMicroelectronicsAccelerometers
XC6220B331MR
SOT-23-5-40℃~+85℃@(Ta) 1 25uA 3.3V 400mV@(800mA) 5.5V 50dB@(10kHz) 900mA Fixed Over Current Protection、Over Temperature Protection Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTECH PUBLICVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdRefRemote PCB
KiCad hardware designs for the RefRemote wireless scoring system — a pair of BLE hand controllers (red/green) worn by a wrestling referee. See refremote_poc for the firmware and scoreboard software that runs on these boards.
Layout
refremoteprototype1/— earliest prototype PCB.refRemotePCB/— first controller revision (schematic, layout, custom footprint library).refremotepcb2/— second revision, including Gerber/drill exports (refremote_gerbers/) and sub-revisions (refremotev0-2/,refremotev0-3/).refremotepcb3/— third revision, with its own Gerber/drill export (refremotev0-3/) and DRC report.
Each revision folder is a self-contained KiCad project: open the .kicad_pro file to view or edit the schematic and layout. .gbr/.drl files are Gerber and drill exports ready to send to a fab; .pos files are pick-and-place data; .zip archives bundle a given export set.
Getting started
Designs are built in KiCad. Open the .kicad_pro file for the revision you want in KiCad 7+.
Parts
61| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 10k | Resistor_SMD:R_0603_1608Metric | 10k, 10k, 10k, 10k, 10k, 10k, 10k, 10k, 10k |
| 7 | SW_Push | Button_Switch_SMD:SW_Push_1TS009xxxx-xxxx-xxxx_6x6x5mm | B1, B2, B3, B4, B5, BOOT, RESET |
| 5 | 0.1u | Capacitor_SMD:C_0603_1608Metric | 0.1u, 0.1u, 0.1u, 0.1u, 0.1u |
| 5 | 100u | Capacitor_SMD:C_1206_3216Metric | 100u, 100u, 100u, 100u, 100u |
| 4 | 330 | Resistor_SMD:R_0603_1608Metric | 330R, 330R, 330R, 330R |
| 3 | 1u | Capacitor_SMD:C_0805_2012Metric | 1u, 1u, 1u |
| 3 | 4.7u | Capacitor_SMD:C_0805_2012Metric | 4.7u, 4.7u, 4.7u |
| 2 | 10u | Capacitor_SMD:C_0805_2012Metric | 10u, 10u |
| 2 | 4.7k | Resistor_SMD:R_0603_1608Metric | 4.7k, 4.7k |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | 5.1k, 5.1k |
| 1 | 1.5k | Resistor_SMD:R_0603_1608Metric | 1.5k |
| 1 | 5k | Resistor_SMD:R_0603_1608Metric | 5k |
| 1 | Battery_Cell | Connector_JST:JST_PH_S2B-PH-SM4-TB_1x02-1MP_P2.00mm_Horizontal | BT |
| 1 | Conn_01x06 | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Horizontal | J1 |
| 1 | DRV2605LDGS | Package_SO:VSSOP-10_3x3mm_P0.5mm | DRV |
| 1 | ESD5Zxx | Diode_SMD:D_SOD-523 | ESD |
| 1 | ESP32-C3-MINI-1 | Espressif:ESP32-C3-MINI-1 | ESP |
| 1 | LED_BAT | LED_SMD:LED_0603_1608Metric | R |
| 1 | LED_CHRG | LED_SMD:LED_0603_1608Metric | R |
| 1 | LED_CONN | LED_SMD:LED_0603_1608Metric | B |
| 1 | LED_GEST | LED_SMD:LED_0603_1608Metric | W |
| 1 | LED_ON | LED_SMD:LED_0603_1608Metric | G |
| 1 | LIS3DH | Package_LGA:LGA-16_3x3mm_P0.5mm_LayoutBorder3x5y | LIS |
| 1 | MAX17048 | Package_DFN_QFN:DFN-8-1EP_2x2mm_P0.5mm_EP1.05x1.75mm | MAX |
| 1 | MCP73831-2-OT | Package_TO_SOT_SMD:SOT-23-5 | MCP |
| 1 | Motor_DC | Motors:custom_motor | + - |
| 1 | SW_SPST | Button_Switch_SMD:SW_SPDT_CK_JS102011SAQN | SW |
| 1 | USB_C_Receptacle_USB2.0_14P | Connector_USB:USB_C_Receptacle_GCT_USB4125-xx-x-0190_6P_TopMnt_Horizontal | J2 |
| 1 | XC6220B331MR | Package_TO_SOT_SMD:SOT-23-5 | XC |
Questions
How big is the Refremotepcb2 PCB?
It measures 40 × 50 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Refremotepcb2 use?
61 parts, built around the ESP32-C3-MINI-1, DRV2605LDGS, LIS3DH and XC6220B331MR. 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 Refremotepcb2 KiCad files?
From the seanconway/refremote-v0 repository on GitHub, at the commit this page was made from: the board is refremotepcb3/refremotepcb2.kicad_pcb and its schematic refRemotePCB/refRemotePCB.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Refremotepcb2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask seanconway before reusing the design.
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