619-J Stepper
jawher-Mansour·619-J_Stepper·files/Kicad Files/Stepper Servo.kicad_pcb
About the 619-J Stepper PCB
619-J Stepper is an open source STM32 PCB design by jawher-Mansour, published on GitHub. It is a 4-layer board measuring 42 × 42 mm, with 63 components from 29 distinct parts.
Its main chip is the STM32F103C8T6, from the STM32 family. Other key parts include the A1333LLETR-5-T, A4950E and AMS1117-3.3. By type, the board carries 22 resistors, 20 capacitors, 5 ICs, 5 connectors, 3 transistors and 3 switches.
It belongs with the robotics & motion designs in this gallery.
From the project
619-J_Stepper is an open source closed loop stepper driver.
Here the features of the 619-JStepper**:
STM32F103C8T6 ARM 32-bit Cortex™-M3** is the CPU of the board. Higher frequency, higher speed and cost-effictive.
Magnetic encoder to Allegro's A1333LLETR-T** Contactless 0° to 360° angle sensor IC ,12bit
USB programming and serial communication** (serial version)
* High speed printing without losing steps.
* Ported the compilation platform from arduino to PlatformIO —— Convenient for STM32 MCU compilation

Main components on the 619-J Stepper
619-J Stepper bill of materials (BOM)
63 components, 29 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | A1333LLETR-5-T | SOP65P640X125-14N | IC1 |
| 2 | A4950E | SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm | U1, U3 |
| 1 | STM32F103C8T6 | LQFP-48_7x7mm_P0.5mm | U2 |
| 1 | AMS1117-3.3 | SOT-223-3_TabPin2 | U4 |
| 3 | FDN337N | ON_Semi-527AG-01-12_2008-O-IPC_C | Q1, Q2, Q3 |
| 1 | 32K768 | Crystal_SMD_3215-2Pin_3.2x1.5mm | Y1 |
| 1 | 8MHZ 8MHz | Crystal_SMD_5032-2Pin_5.0x3.2mm | Y2 |
| 1 | USB_B_Micro | USB_Micro-AB_Molex_47590-0001 | J1 |
| 1 | SWD | PinHeader_2x03_P2.54mm_Vertical | J2 |
| 1 | Motor | TerminalBlock_MetzConnect_Type059_RT06304HBWC_1x04_P3.50mm_Horizontal | J3 |
| 1 | Screen | PinHeader_1x07_P2.54mm_Vertical | J4 |
| 1 | Inputs | JST_EH_B6B-EH-A_1x06_P2.50mm_Vertical | J5 |
| 3 | SW_DIP_X01 SW_DIP_x01 | SW_Push_SPST_NO_Alps_SKRK | SW1, SW2, SW3 |
| 1 | LED | LED_0603_1608Metric | D1 |
| 1 | LED_Small | LED_0603_1608Metric | D2 |
| 1 | BAT64-05 | Infineon-BAT64-05-Level_C | D3 |
| 11 | 100NF 100nF | C_0603_1608Metric | C1, C2, C3, C7, C14, C15, C16, C17 +3 |
| 2 | 10PF 10pF | C_0402_1005Metric | C4, C5 |
| 1 | 100UF 100uF | CP_Elec_6.3x5.3 | C6 |
| 2 | 22PF 22pF | C_0402_1005Metric | C8, C9 |
Show 9 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | 100NF 100nF | C_0402_1005Metric | C10, C11, C12, C13 |
| 4 | 1K | R_0402_1005Metric | R1, R3, R10, R12 |
| 2 | 0.1 | R_1206_3216Metric | R2, R11 |
| 10 | 10K | R_0402_1005Metric | R4, R5, R8, R14, R15, R16, R17, R18 +2 |
| 2 | 22 | R_0402_1005Metric | R6, R9 |
| 1 | 1K5 | R_0402_1005Metric | R7 |
| 1 | 1M | R_0603_1608Metric | R13 |
| 1 | 10 | R_Array_Convex_4x0402 | RN1 |
| 1 | 100 | R_Array_Convex_4x0402 | RN2 |
619-J Stepper design files
The KiCad project lives in the jawher-Mansour/619-J_Stepper repository on GitHub; these links point at the commit this page was built from.
619-J Stepper: common questions
What microcontroller does the 619-J Stepper use?
The 619-J Stepper is built around the STM32F103C8T6, from the STM32 family.
How big is the 619-J Stepper PCB?
The 619-J Stepper measures 42 × 42 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the 619-J Stepper?
63 components, from 29 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the 619-J Stepper design files?
From the jawher-Mansour/619-J_Stepper repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the 619-J Stepper design in my own project?
The repository has no license, so all rights stay with jawher-Mansour. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the 619-J Stepper without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
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