TheColonelYoung/RingOne33D air mouse based on STM32 - Can be used for controlling CADs and every other manipulation in 3D space. Is based around STM32L452, IMU LSM6DSL (gyroscope and accelerometer) and Bluetooth low power module RN4871.
RingOne is an open-source printed circuit board by TheColonelYoung, from the TheColonelYoung/RingOne repository on GitHub. It is a 4-layer board of 35 × 18 mm with 85 parts on 98 nets, routed with 1,413 tracks and 180 vias.
It is built around the INA199EVM, KTD2026BEWE-TR and LM66100DCK, with the LSM6DSL, M24C32-FMC6TG and NCV8165ML330TC among its other parts. Its parts include 27 capacitors, 20 resistors, 17 ICs, 6 diodes and 3 connectors. It belongs with the sensors and measurement and power boards and the STM32 boards of this library.
3D air mouse based on STM32
Can be used for controlling CADs and every other manipulation in 3D space. Is based around STM32L452, IMU LSM6DSL (gyroscope and accelerometer) and Bluetooth low power module RN4871. Also contains battery management system for charging internal battery and also powering itself from this li-po battery (around 40 mah). Battery can be recharged via USB type C which can be also used for streaming data from accelerometer.
Advanced USB capabilities are managed by STUSB1600 IC which communicate with host over CC lines. Button near bluettoth module serves as power up and also can be used to wake up device when is in power saving mode. For waking of device can be also used capability of accelerometer to detect taps. RGB LED diode is used to inform user about device status.
During development, data can be saved to NOR Flash memory on board which is accessible via MCu CLI interface. Also connectors for SWD interface and debug UART are contained.
| Front | Back |
|---|---|
 |  |
Note: black silk screen on back side of PCB should be also white, back color of silkscreen is probably result of some bug in Kicad rendering engine
| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 100nF | Capacitor_SMD:C_0603_1608Metric | C2, C3, C4, C5, C6, C7, C8, C12, C20, C21, C23, C24 |
| 9 | 1uF | Capacitor_SMD:C_0603_1608Metric | C13, C14, C15, C16, C17, C22, C25, C26, C27 |
| 3 | 100k | Resistor_SMD:R_0603_1608Metric | R1, R9, R16 |
| 3 | 100nF | TCY_passives:C_0603_1608Metric | C9, C10, C11 |
| 3 | 10k | Resistor_SMD:R_0603_1608Metric | R14, R15, R19 |
| 3 | 1k | Resistor_SMD:R_0603_1608Metric | R2, R5, R17 |
| 3 | LOGO | LOGO | G***, G***, G*** |
| 2 | 22R | Resistor_SMD:R_0603_1608Metric | R3, R4 |
| 2 | 3V3 | Diode_SMD:D_SOD-523 | D5, D6 |
| 2 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C18, C19 |
| 2 | 470k | Resistor_SMD:R_0603_1608Metric | R12, R13 |
| 2 | LM66100 | Package_TO_SOT_SMD:SOT-363_SC-70-6 | U12, U13 |
| 2 | RB751S40T5G | Diode_SMD:D_SOD-523 | D3, D4 |
| 2 | TestPoint | TCY_connectors:TestPoint_Pad_D0.5mm | TP2, TP3 |
| 1 | 0.05R | Resistor_SMD:R_0603_1608Metric | R18 |
| 1 | 100k | TCY_passives:R_0603_1608Metric | R20 |
| 1 | 10k | TCY_passives:R_0603_1608Metric | R6 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | 1S Li-Po | TCY_connectors:Amphenol_10114830-11102LF_1x02_P1.25mm_Horizontal | BT1 |
| 1 | 1k | TCY_passives:R_0603_1608Metric | R7 |
| 1 | 22k | Resistor_SMD:R_0603_1608Metric | R8 |
| 1 | 2k2 | Resistor_SMD:R_0603_1608Metric | R11 |
| 1 | 330R | Resistor_SMD:R_0603_1608Metric | R10 |
| 1 | 50R@100Mhz | Inductor_SMD:L_1206_3216Metric | FB1 |
| 1 | AT25SF321B | Package_DFN_QFN:DFN-8-1EP_6x5mm_P1.27mm_EP4x4mm | U6 |
| 1 | BQ297xy | Package_SON:WSON-6_1.5x1.5mm_P0.5mm | U11 |
| 1 | DBG_UART | TCY_connectors:Amphenol_10114830-11103LF_1x03_P1.25mm_Horizontal | J2 |
| 1 | EADA25L | Package_TO_SOT_SMD:SOT-23 | D2 |
| 1 | INA199 | Package_DFN_QFN:UQFN-10_1.4x1.8mm_P0.4mm | U16 |
| 1 | KTD2026BEWE | TCY_IC:UTDFN-8-1EP_1.5x1.5mm_P0.4mm_EP0.8x1.45mm | U4 |
| 1 | LED_RGBA | Resistor_SMD:R_Array_Convex_2x0606 | D1 |
| 1 | LSM6DSL | Package_LGA:LGA-14_3x2.5mm_P0.5mm_LayoutBorder3x4y | U5 |
| 1 | M24C32-FMC6TG | Package_DFN_QFN:DFN-8-1EP_3x2mm_P0.5mm_EP1.3x1.5mm | U3 |
| 1 | MCP73831-2-OT | Package_TO_SOT_SMD:SOT-23-5 | U10 |
| 1 | MIC94300 | TCY_IC:MLF-4_1.2x1.6mm_P0.5_1EP_0.85x0.5mm | U17 |
| 1 | NCV8165ML330 | Package_DFN_QFN:DFN-8-1EP_3x3mm_P0.65mm_EP1.55x2.4mm | U15 |
| 1 | PMDPB70XP | TCY_IC:UDFN-6-2EP_2x2mm_P0.65mm_EP1x0.7mm | U8 |
| 1 | PROG_CONN | TCY_connectors:Amphenol_10114830-11103LF_1x03_P1.25mm_Horizontal | J1 |
| 1 | RN4871 | RF_Module:Microchip_RN4871 | U2 |
| 1 | RST_BTN | TCY_buttons_switches:KMT031NGJLHS | SW1 |
| 1 | SN74LVC1G14DRL | Package_TO_SOT_SMD:SOT-553 | U14 |
| 1 | STM32L452CEUx | Package_DFN_QFN:QFN-48-1EP_7x7mm_P0.5mm_EP5.6x5.6mm | U1 |
| 1 | STUSB1600AQTR | Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm | U9 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U7 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J3 |
| 1 | UT6MA2TCR | TCY_IC:UDFN-6-2EP_2x2mm_P0.65mm_EP1x0.7mm | Q2 |
| 1 | VBUS | TCY_connectors:TestPoint_Pad_D0.5mm | TP1 |
| 1 | WAKEUP | TCY_buttons_switches:EVQ-P7J01P | SW2 |
| 1 | YJQ3400 | TCY_IC:UDFN-6-2EP_2x2mm_P0.65mm_EP1x0.7mm | Q1 |
It measures 35 × 18 mm and has 4 copper layers, 0.8 mm thick.
85 parts, built around the INA199EVM, KTD2026BEWE-TR, LM66100DCK and LSM6DSL. 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 TheColonelYoung/RingOne repository on GitHub, at the commit this page was made from: the board is pcb/RingOne.kicad_pcb and its schematic pcb/BTN_Denoise.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 TheColonelYoung before reusing the design.
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