4 layers48 × 44.5 mm
Stm32-nema17-servo
dognotdog/smol_servo
circuitry and software for controlling NEMA17 size brushless motors and stepper motors as servos.
98 parts5
4 layers30 × 40 mm
Imu module
bit-bots/bitbots_imu_dxl4The Bitbots IMU DXL module is a Sensor module that can be connected to the Dynamixel Bus (RS485 or TTL).
- Size
- 30 × 40 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 36
- Nets
- 48
- Pads
- 168
- Tracks, vias
- 352, 48
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 26 Jun 2020
- Updated
- 23 Mar 2025
Overview
Imu module is an open-source printed circuit board by bit-bots, from the bit-bots/bitbots_imu_dxl repository on GitHub, published under the MIT licence. It is a 4-layer board of 30 × 40 mm with 36 parts on 48 nets, routed with 352 tracks and 48 vias.
It is built around the ESP32-WROOM-32U, SN74LV1T34DBV and VXO7803-500-M-TR, with the AP2114HA-3.3TRG1, BMI088 and WS2812B among its other parts. Its parts include 12 capacitors, 5 ICs, 4 connectors, 3 resistors and 3 diodes. It belongs with the sensors and measurement boards and the ESP32 boards of this library.
Main components
7
ESP32-WROOM-32U
SMD,19.2x18mm-40℃~+85℃ -97dBm 2.4GHz 20.5dBm 3V~3.6V Bluetooth4.2 ESP32-DOWD UART、SDIO、SPI、I2C、GPIO、PWM、ADC、DAC、CAN SMD,19.2x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
SN74LV1T34DBV
SOT-23-5-40℃~+125℃ 1 1 1.6V~5.5V 10uA 5.5ns@5V,15pF 74LV 8mA 8mA Level shifting Push-pull Unidirectional SOT-23-5 Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, TransceiversVXO7803-500-M-TR
SMD-4P,13.5x12.5mm-40℃~+85℃ 1 12.5mm 13.5mm 200uA 3.3V 3.5mm 4.75V~36V 500mA 50mVp-p 680uF 700kHz 86% Open type Short Circuit Protection、Automatic fault recovery ±4% SMD-4P,13.5x12.5mm DC-DC Power Modules ROHSCUIDC-DC Power Modules
AP2114HA-3.3TRG1
SOT-223-40℃~+85℃@(Ta) 1 1A 3.3V 30uVrms 65dB@(1kHz) 65uA 6V 750mV@(1A) Fixed Over Current Protection、Thermal Shutdown、使能控制 Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSDiodes IncorporatedVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
BMI088
LGA-16(3x4.5)-40℃~+85℃ Accelerometer Gyroscope LGA-16(3x4.5) Accelerometers ROHSBosch SensortecAccelerometers
WS2812B
5mm X 5mm Surface Mount RGB LED with Intelligent ControlWorldsemiUncategorised
VLS5045EX-220M
SMD,5x5mm1.8A 125mΩ 22uH 2A ±20% SMD,5x5mm Power Inductors ROHSTDKPower Inductors
README
README.mdbitbots_imu_dxl
The Bitbots IMU DXL module is a Sensor module that can be connected to the Dynamixel Bus (RS485 or TTL).
Features
- 12 Bit 3 axis gyroscope and 3 axis accelerometer (MPU6500 sensor)
- 1000 Hz update rate
- configurable range (250-2000 deg/sec and 2-16g)
- configurable onboard complementary
filter <https://www.mdpi.com/1424-8220/15/8/19302>_ - gyroscope and accelerometer calibration procedure
- direct reading of orientation as quaternion
- connection via the Dynamixel bus
- 3 RGB LEDs
- 3 Buttons
Parts
36| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 100n | Capacitor_SMD:C_0805_2012Metric | C1, C2, C3, C4, C8, C12 |
| 3 | MountingHole_Pad | MountingHole:MountingHole_2.7mm_M2.5_ISO14580_Pad | H1, H2, H3 |
| 3 | SW_Push | lib:RND 210-00211 | SW1, SW2, SW3 |
| 3 | WS2812B | lib:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm_marked | D1, D2, D3 |
| 2 | 22u/16v | Capacitor_SMD:C_1206_3216Metric | C7, C9 |
| 2 | 4.7u | Capacitor_SMD:C_1206_3216Metric | C10, C11 |
| 2 | 4K7 | Resistor_SMD:R_0805_2012Metric | R2, R3 |
| 2 | Conn_01x04 | Connector_Molex:Molex_SPOX_5267-04A_1x04_P2.50mm_Vertical | J3, J4 |
| 1 | 10K | Resistor_SMD:R_0805_2012Metric | R1 |
| 1 | 10u | Capacitor_SMD:C_0805_2012Metric | C5 |
| 1 | 10u/50V | Capacitor_SMD:C_1206_3216Metric | C6 |
| 1 | AP2114HA-3.3TRG1 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U5 |
| 1 | BMI088 | lib:BMI088 | U2 |
| 1 | Conn_01x04_Pin | Connector_PinHeader_1.27mm:PinHeader_1x04_P1.27mm_Vertical | J2 |
| 1 | ESP32-WROOM-32U | RF_Module:ESP32-WROOM-32UE | U1 |
| 1 | PRGM+Debug | lib:esp32_prgm_debug | J1 |
| 1 | SN74LV1T34DBV | Package_TO_SOT_SMD:SOT-23-5 | U3 |
| 1 | SP485 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U4 |
| 1 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | VLS5045EX-220M | lib:VLS5045EX330M | L1 |
| 1 | VXO7803-500-M | lib:CONV_VXO7803-500-M | PS1 |
Questions
How big is the Imu module PCB?
It measures 30 × 40 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Imu module use?
36 parts, built around the ESP32-WROOM-32U, SN74LV1T34DBV, VXO7803-500-M-TR and AP2114HA-3.3TRG1. 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 Imu module KiCad files?
From the bit-bots/bitbots_imu_dxl repository on GitHub, at the commit this page was made from: the board is electronics/imu_module/imu_module.kicad_pcb and its schematic electronics/imu_module/imu_module.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Imu module design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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