2 layers25.4 × 57.2 mm
OpenTherm Click
michpro/mikroBUS
Collection of add-on boards in mikroBUS™ standard
58 parts5CERN-OHL-P-2.0
2 layers25.4 × 42.9 mm
LIN Click
michpro/mikroBUS5Collection of add-on boards in mikroBUS™ standard
- Size
- 25.4 × 42.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 34
- Nets
- 29
- Pads
- 87
- Tracks, vias
- 104, 49
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 29 Aug 2023
- Updated
- 14 Sep 2025
Overview
LIN Click is an open-source printed circuit board by michpro, from the michpro/mikroBUS repository on GitHub, published under the CERN-OHL-P-2.0 licence. It is a 2-layer board of 25.4 × 42.9 mm with 34 parts on 29 nets, routed with 104 tracks and 49 vias.
It is built around the SIT1021QT/1, B0512S-1W and 1N5819W, with the SMF26CA and MMBT2222A among its other parts. Its parts include 8 resistors, 7 capacitors, 7 diodes, 2 connectors and 1 IC.
Main components
5
SIT1021QT/1
SOP8-40℃~+125℃ 20Kbps 30uA 3mA 5.5V~27V Thermal shutdown protection、Bus fault protection、Local wake-up、Bus wake-up、Low-power mode、TXD timeout protection、Under-voltage detection Transceiver ±8kV SOP8 LIN Transceivers ROHSSITLIN Transceivers
B0512S-1W
SIP,11.7x6mmSIP,11.7x6mm Isolated Power Modules ROHSYLPTECIsolated Power Modules
1N5819W
SOD-12313A 350mA 40V 5uA@30V 600mV@200mA Standalone SOD-123 Schottky Diodes ROHSJSMSEMISchottky Diodes
SMF26CA
SOD-123FL-55℃~+150℃ 1uA 200W@10/1000us 26V 31.9V 4.8A@10/1000us 42.1V Bidirectional IEC 61000-4-2 TVS SOD-123FL ESD and Surge Protection (TVS/ESD) ROHShongjiachengESD And Surge Protection (TVS/ESD)
MMBT2222A
SOT-23-55℃~+150℃ 1 NPN 100 100nA 1V 300MHz 300mW 40V 600mA 6V NPN Standalone SOT-23 Bipolar (BJT) ROHShongjiachengBipolar (BJT)
README
HLW8032_Click/README.mdHLW8032 Click - energy metering module
Overview
The HLW8032 Click board is a compact energy metering module designed for integration with MikroElektronika's mikroBUS™ ecosystem. It utilizes the HLW8032 integrated circuit, a high-precision single-phase energy measurement chip capable of monitoring active power, voltage, current, and power factor. This board is suitable for applications in smart energy monitoring, IoT-based power management systems, and industrial automation where accurate real-time energy consumption data is required.
Features
- Energy Metering IC: HLW8032 for precise measurement of voltage (VP), current (IP/IN), and power.
- Input Connections: 4-pin screw terminal for line (L), neutral (N), and load connections.
- Shunt Resistor: 2 mΩ for current sensing, rated for high power dissipation.
- mikroBUS™ Compatibility: Standard mikroBUS™ PCB form factor.
- Ground Separation: High-voltage ground (HVGND) isolated from low-voltage ground (GND) for safety.
The board supports UART communication at 4800 baud for serial data output, providing registers for power, voltage, current, and energy accumulation.
Schematic diagram
Visual simulation of a transformerless power supply.
Module visualisation
(click on the image to see the 3D model)
Assembly
Production files
Production files can be found here.
Usage Guide
- Connection:
- Connect AC line to J1 (L/N) and load to L1/N1.
- Plug into mikroBUS™ socket on a host board (e.g., MCU development kit).
- Power via +5V/+3.3V pins.
- Communication:
- UART (TX/RX at 4800 baud, 8N1): Read 24-byte data frames for measurements.
- PF Pin: Pulse output proportional to active electric energy.
- Software:
- Use MikroE libraries or custom code to parse HLW8032 registers.
- Example: Voltage = (Register Value) * Calibration Factor.
- Calibration: Adjust via software for shunt and divider ratios.
- Safety: ** Handle high-voltage sections with care; ensure proper isolation **.
Reporting bugs
License
Copyright © 2025 Michal Protasowicki
This project is released under CERN Open Hardware Licence Version 2 - Permissive.
Support
If You find my projects interesting and You wanted to support my work, You can give me a cup of coffee or a keg of beer :)
Parts
34| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 10k | footprints:R_0805_2012Metric | R3, R4, R6 |
| 3 | 1N5819W | footprints:D_SOD-123 | D2, D4, D7 |
| 2 | 100n | footprints:C_0805_2012Metric | C4, C5 |
| 2 | 2k2 | footprints:R_0805_2012Metric | R1, R2 |
| 2 | SMF26CA | footprints:D_SOD-123FL | D5, D6 |
| 1 | 10u | footprints:C_0805_2012Metric | C3 |
| 1 | 1k | footprints:R_0805_2012Metric | R8 |
| 1 | 1n | footprints:C_0805_2012Metric | C7 |
| 1 | 220p | footprints:C_0805_2012Metric | C6 |
| 1 | 2u2 | footprints:C_0805_2012Metric | C2 |
| 1 | 3V3 | footprints:D_SOD-123 | D3 |
| 1 | 47k | footprints:R_0805_2012Metric | R5 |
| 1 | 4u7 | footprints:C_0805_2012Metric | C1 |
| 1 | 75k | footprints:R_0805_2012Metric | R7 |
| 1 | B0512S-1W | footprints:BxxyyS-1W | M1 |
| 1 | EN SEL | footprints:PinHeader_1x03_P2.54mm_Vertical | JP2 |
| 1 | LIN | footprints:DG250-3.5-03P-11-00AH | J1 |
| 1 | LIN Click v1.0 by MPro | footprints:mikroBUS_module_M | J0 |
| 1 | Logo_Open_Hardware_Small | footprints:OSHW-Logo2_7.3x6mm_SilkScreen | LOGO1 |
| 1 | MMBT2222A | footprints:SOT-23 | Q1 |
| 1 | Mode | footprints:PinHeader_1x03_P2.54mm_Vertical | JP3 |
| 1 | PWR | footprints:PinHeader_1x03_P2.54mm_Vertical | JP1 |
| 1 | Power | footprints:LED_0805_2012Metric | D1 |
| 1 | SIT1021QT/1 | footprints:SO-8_3.9x4.9mm_P1.27mm | U1 |
The 31 most common of 34 parts.
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Questions
How big is the LIN Click PCB?
It measures 25.4 × 42.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the LIN Click use?
34 parts, built around the SIT1021QT/1, B0512S-1W, 1N5819W and SMF26CA. 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 LIN Click KiCad files?
From the michpro/mikroBUS repository on GitHub, at the commit this page was made from: the board is LIN_Click/LIN_Click.kicad_pcb and its schematic Arduino_UNO_click_shield/Arduino_UNO_click_shield.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the LIN Click design in my own project?
Its repository publishes it under the CERN-OHL-P-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).