8 layers50 × 50 mm
Omodri laas
open-dynamic-robot-initiative/open-motor-driver-initiative
Open-source drive for brushless motors, following the open dynamic robot initiative
265 parts122BSD-3-Clause
2 layers81 × 49 mm
MmStep
luni64/mmStep14Stepper driver board for the sparkfun MicroMod system. Compatible to DRV8825, A4988 etc.
- Size
- 81 × 49 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 39
- Nets
- 73
- Pads
- 283
- Tracks, vias
- 655, 52
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 25 Dec 2020
- Updated
- 27 Dec 2020
Overview
MmStep is an open-source printed circuit board by luni64, from the luni64/mmStep repository on GitHub, published under the MIT licence. It is a 2-layer board of 81 × 49 mm with 39 parts on 73 nets, routed with 655 tracks and 52 vias.
It is built around the MIC5219-3.3YM5, B3U-1000P-B and DX07S016JA1R1500. Its parts include 11 connectors, 7 capacitors, 5 resistors, 2 ICs and 2 switches. It belongs with the robots and motor control boards of this library.
Main components
3
MIC5219-3.3YM5
SOT23-53.3V 500mA Peak Output Low Drop-Out (LDO) RegulatorMicrochip TechnologyUncategorised
B3U-1000P-B
SMD,3x2.5mm-25℃~+70℃ 1.53N 1.6mm 12V 2.5mm 3mm 50mA Round Button SMD(SMT) Tab SPST Surface Mount,Vertical SMD,3x2.5mm Tactile Switches ROHSOmronTactile Switches
DX07S016JA1R1500
SMD-40℃~+85℃ 1 250mA、1.25A 48V Black Female Type-C USB 2.0 SMD USB Connectors ROHSJAE ElectronicsUSB Connectors
README
README.md
mmStep
Stepper driver board compatible to the SparkFun MicroMod system for DRV8825, A4988 etc. driver boards.
Features:
- Up to 4 stepper driver modules with standard layout (DRV8825, A4988 etc.)
- VIN can be chosen from USB (standard) or an external (4-6V) supply
- VMOT: 8-35V
- Micro-step selection as well as enable are handled by a I2C multiplexer (MCP23017)
- STEP/DIR signals are directly connected to the GPIOs
- A couple of signals are broken out on pads (100 mil raster) to connect to the outside world (see silk screen on the bottom layer)
- Two layer, 81x49mm
- USB-C connector
Production data
Here a link to an Octopart BOM containing live updated prices and availability from major distributors. It also provides links to datasheets, and technical information and alternative parts.
Gerbers and drill files can be found in the production folder
Schematic, pictures, pinouts and datasheets can be found in the documentation folder.
Parts
39| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 47u | Capacitor_THT:CP_Axial_L10.0mm_D4.5mm_P15.00mm_Horizontal | C4, C5, C6, C7 |
| 4 | Pololu_Breakout_DRV8825 | Module:Pololu_Breakout-16_15.2x20.3mm | A1, A2, A3, A4 |
| 2 | 2k2 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R3, R4 |
| 2 | 5k1 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1, R2 |
| 2 | Screw_Term 100mil 1x2 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MPT-0,5-2-2.54_1x02_P2.54mm_Horizontal | J6, J11 |
| 2 | Screw_Terminal_01x04 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MPT-0,5-4-2.54_1x04_P2.54mm_Horizontal | J7, J9 |
| 1 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R5 |
| 1 | 1u | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C1 |
| 1 | 2u2 | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C3 |
| 1 | 470p | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C2 |
| 1 | B3U1000P | Button_Switch_SMD:SW_SPST_B3U-1000P | SW1 |
| 1 | Conn_02x08_Top_Bottom | Connector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_Vertical | J1 |
| 1 | DX07S016JA1R1500 | myCon:JAE_DX07S016JA1R1500 | J2 |
| 1 | I2C | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J5 |
| 1 | LED_0805 | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1 |
| 1 | LOGO | prj:logo | G*** |
| 1 | MCP23017_SS | Package_SO:SSOP-28_5.3x10.2mm_P0.65mm | U2 |
| 1 | MIC5219-3.3YM5 | Package_TO_SOT_SMD:SOT-23-5 | U1 |
| 1 | MICROMOD-2222-C | MicroMod:TE_Connectivity-2199230-4-Handsolder | J3 |
| 1 | Pin Head 50mil | Connector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical | J4 |
| 1 | SW_Push | Button_Switch_SMD:SW_SPST_B3U-1000P | SW2 |
| 1 | Screw Term 100mil 1x4 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MPT-0,5-4-2.54_1x04_P2.54mm_Horizontal | J10 |
| 1 | Screw_Term 100mil 1x4 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MPT-0,5-4-2.54_1x04_P2.54mm_Horizontal | J8 |
| 1 | SolderJumper_2_Bridged | Jumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP1 |
| 1 | SolderJumper_3_Bridged12 | Jumper:SolderJumper-3_P1.3mm_Bridged2Bar12_RoundedPad1.0x1.5mm | JP2 |
The 35 most common of 39 parts.
Questions
How big is the MmStep PCB?
It measures 81 × 49 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MmStep use?
39 parts, built around the MIC5219-3.3YM5, B3U-1000P-B and DX07S016JA1R1500. 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 MmStep KiCad files?
From the luni64/mmStep repository on GitHub, at the commit this page was made from: the board is KiCad/mmStep.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the MmStep 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).
Similar boards
- 4 layers58 × 50 mm
Bldc motor cntroller
azmat-bilal/bldc_motor_controller_pcb
A Brushless DC Motor controller board. The design is inspired and is compatible with Odrive project (https://github.com/madcowswe/ODriveHardware) except that this one has a single channel.
146 parts112MIT - 6 layers60.6 × 100 mm
Gecko5education
logisim-evolution/GECKO5Education
Openhardware educational platform based on the ideas of the ulx3s and Gecko4Education
311 parts18MIT - 4 layers85.5 × 56 mm
- 8 layers245 × 129 mm
- 2 layers89.5 × 50 mm
BSC finish punches transmitter
ut-ims-robotics/eensaar-thesis-2026-wireless-finish-punch-transmission
This repository hosts the source code, electrical schematics and layout, as well as documentation developed by Emil Eensaar for his Bachelor of Science thesis.
63 parts1Apache-2.0 - 6 layers157 × 73 mm
- 4 layers90 × 21 mm
Soilsense
fredriknk/ssense
Open hardware for a Zigbee nrf52833 soil moisture probe, It is designed for using M3 stainless steel rods as probes screwed into the headers H1,H2,H3.
74 partsMIT