HMI
About the HMI PCB
HMI is an open source AVR/Arduino PCB design by datacrystals, published on GitHub. It is a 4-layer board measuring 250 × 150 mm, with 158 components from 20 distinct parts.
Its main chip is the Arduino_Mega2560_R3_Shield, from the AVR/Arduino family. Other key parts include the ISO1042BDWVR and MCP2515-e/ST. By type, the board carries 58 connectors, 40 resistors, 29 capacitors, 24 transistors, 2 ICs and 1 module.
Main components on the HMI
HMI bill of materials (BOM)
158 components, 20 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ISO1042BDWVR | SOIC127P1150X280-8N | IC1 |
| 1 | MCP2515-e/ST MCP2515-e_ST | SOP65P640X120-20N | IC6 |
| 1 | Arduino_Mega2560_R3_Shield | Arduino_Mega2560_R3_Shield | A2 |
| 24 | SSM3K361R,LF | SOT95P240X88-3N | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 +16 |
| 1 | 8MHZ 8MHz | Crystal_HC49-4H_Vertical | Y1 |
| 2 | 1987724 | 1987724 | J1, J2 |
| 56 | 5442251 | 5442251 | J3, J4, J5, J6, J7, J8, J9, J10 +48 |
| 1 | ACT45B-101-2P-TL003 | ACT45B1012PTL003 | FL1 |
| 1 | JUMPER_2_OPEN Jumper_2_Open | PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 1 | RFMM-0505S | RFMM0505S | PS1 |
| 1 | 1uF | C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C1 |
| 8 | UVY1E102MPD1TD 100nF | C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C2, C3, C4, C5, C6, C7, C8, C9 |
| 2 | 100nF | C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C10, C11 |
| 5 | ALH82A750CB600 100nF | C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C12, C13, C14, C15, C16 |
| 4 | 100NF 100nF | C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C65, C85, C89, C92 |
| 4 | 10UF 1uF | C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C66, C86, C90, C91 |
| 5 | 22PF 22pF | C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C67, C68, C93, C94, C95 |
| 5 | 4.7K 4.7k | R_1210_3225Metric_Pad1.30x2.65mm_HandSolder | R1, R2, R3, R4, R59 |
| 34 | 4.7k | R_1210_3225Metric_Pad1.30x2.65mm_HandSolder | R5, R6, R7, R8, R9, R10, R11, R12 +26 |
| 1 | 120 | R_1210_3225Metric_Pad1.30x2.65mm_HandSolder | R60 |
HMI design files
The KiCad project lives in the datacrystals/TractionInverterV3 repository on GitHub; these links point at the commit this page was built from.
HMI: common questions
What microcontroller does the HMI use?
The HMI is built around the Arduino_Mega2560_R3_Shield, from the AVR/Arduino family.
How big is the HMI PCB?
The HMI measures 250 × 150 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the HMI?
158 components, from 20 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 HMI design files?
From the datacrystals/TractionInverterV3 repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the HMI design in my own project?
The repository has no license, so all rights stay with datacrystals. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the HMI without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
More boards in TractionInverterV3
AVR/ArduinoInverterBoostConverter
450 × 150 mm225 parts2LNo license0
PowerBoard
430 × 310 mm191 parts4LNo license0
RP2040/RP2350ControlBoard
250 × 150 mm170 parts4LNo license0
AVR/ArduinoDynamicBrakeGrid
350 × 150 mm151 parts4LNo license0
IsolatedVoltageSensor
125 × 85 mm117 parts4LNo license0
GateDriver
112.5 × 120 mm103 parts4LNo license0
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