OpenTherm Click
About the OpenTherm Click PCB
OpenTherm Click is an open source PCB design by michpro, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 25.4 × 57.2 mm, with 47 components from 36 distinct parts.
Other key parts include the MT3540-F23 and LTV-217-B-G. By type, the board carries 18 resistors, 12 diodes, 6 transistors, 4 capacitors, 3 ICs and 2 connectors.
It belongs with the test & measurement designs in this gallery.
From the project
Collection of add-on boards in mikroBUS™ standard
- OpenTherm Click - Overview - Features - Schematic diagram - Module visualisation - Assembly - Production files - Testing out the hardware - Prerequisites - Instructions - Notes - Software - Reporting bugs - License - Hardware - Software - Support
This work is based on otgw.tclcode.com project.
1. Upload the Program - Load the clicktest.ino program onto your Arduino board using the Arduino IDE. If necessary, adjust the pins used in the programme.*
Main components on the OpenTherm Click
OpenTherm Click bill of materials (BOM)
47 components, 36 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MT3540-F23 | SOT-23-5 | U1 |
| 2 | LTV-217-B-G | SOP-4_4.4x2.6mm_P1.27mm | U2, U3 |
| 4 | MMBT2907A | SOT-23 | Q1, Q2, Q3, Q4 |
| 2 | MMBT2222A | SOT-23 | Q5, Q6 |
| 1 | BOILER | Altech_AK100_1x02_P5.00mm | J1 |
| 1 | THERM | Altech_AK100_1x02_P5.00mm | J2 |
| 1 | C5383112 PWR | PinHeader_1x03_P2.54mm_Vertical | JP1 |
| 1 | 1N5819W | D_SOD-123 | D1 |
| 4 | 1N4148W | D_SOD-123 | D2, D3, D4, D5 |
| 1 | 4V7 | D_SOD-123 | D6 |
| 1 | 13V | D_SOD-123 | D7 |
| 1 | 4V3 | D_SOD-123 | D8 |
| 1 | 8V2 | D_SOD-123 | D9 |
| 1 | C84256 Power | LED_0805_2012Metric | D10 |
| 1 | C2297 RxB | LED_0805_2012Metric | D11 |
| 1 | C2296 RxT | LED_0805_2012Metric | D12 |
| 1 | 10UH 10uH | Inductor_4.2x4.4mm | L1 |
| 1 | 10U 10u | C_0603_1608Metric | C1 |
| 1 | 22P 22p | C_0603_1608Metric | C2 |
| 1 | 100N 100n | C_0603_1608Metric | C3 |
Show 16 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 10U 10u | C_0805_2012Metric | C4 |
| 1 | 240K 240k | R_0603_1608Metric | R1 |
| 1 | 13K 13k | R_0603_1608Metric | R2 |
| 1 | 330 | R_0603_1608Metric | R3 |
| 1 | 220 | R_0603_1608Metric | R4 |
| 2 | 100 | R_0603_1608Metric | R5, R8 |
| 1 | 560 | R_0603_1608Metric | R6 |
| 2 | 10K 10k | R_0603_1608Metric | R7, R12 |
| 1 | 33K 33k | R_0603_1608Metric | R9 |
| 2 | 20 | R_0603_1608Metric | R10, R11 |
| 1 | 150K 150k | R_0603_1608Metric | R13 |
| 1 | 1k | R_0603_1608Metric | R14 |
| 1 | 4K7 4k7 | R_0603_1608Metric | R15 |
| 1 | 1K8 1k8 | R_0603_1608Metric | R16 |
| 1 | 5K1 5k1 | R_0603_1608Metric | R17 |
| 1 | 1K5 1k5 | R_0603_1608Metric | R18 |
OpenTherm Click design files
The KiCad project lives in the michpro/mikroBUS repository on GitHub; these links point at the commit this page was built from.
OpenTherm Click: common questions
How big is the OpenTherm Click PCB?
The OpenTherm Click measures 25.4 × 57.2 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the OpenTherm Click?
47 components, from 36 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 OpenTherm Click design files?
From the michpro/mikroBUS 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 OpenTherm Click design in my own project?
Yes, under the terms of its CERN-OHL-P-2.0 license, which michpro chose for the repository.
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