Thermo
About the Thermo PCB
Thermo is an open source Nordic nRF PCB design by deniskokarev, published on GitHub. It is a 2-layer board measuring 35 × 30 mm, with 23 components from 17 distinct parts.
Its main chip is the nRF52832-QFxx, from the Nordic nRF family. Other key parts include the Si7021-A20. By type, the board carries 14 capacitors, 2 ICs, 2 crystals, 2 connectors, 2 inductors and 1 battery holder.
Main components on the Thermo
Thermo bill of materials (BOM)
23 components, 17 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | nRF52832-QFxx | QFN-48-1EP_6x6mm_P0.4mm_EP4.6x4.6mm | U2 |
| 1 | Si7021-A20 | DFN-6-1EP_3x3mm_P1mm_EP1.5x2.4mm | U3 |
| 1 | XRCGB32M000F1H01R0 | OSC_XRCGB32M000F1H01R0 | Y1 |
| 1 | SC20S-9PF10PPM | R_1210_3225Metric | Y2 |
| 1 | SWD | PinHeader_2x05_P1.27mm_Vertical_SMD | J2 |
| 1 | ANT U.FL | AMPHENOL_A-1JB | J3 |
| 1 | CR2032 | BAT_BAT-HLD-001 | BT1 |
| 1 | 10uH | L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | L1 |
| 1 | 3.9nH | L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | L2 |
| 2 | 1u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C6 |
| 4 | 100n | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C3, C12, C15 |
| 1 | N/C | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C4 |
| 1 | 100p | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C5 |
| 1 | .8p | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C7 |
| 2 | 8p | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C8, C9 |
| 1 | 1.2p | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C10 |
| 2 | 9p | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C13, C14 |
Thermo design files
The KiCad project lives in the deniskokarev/thermo repository on GitHub; these links point at the commit this page was built from.
- Layouthard/thermo/thermo.kicad_pcb
- Schematichard/thermo/thermo.kicad_sch
Thermo: common questions
What microcontroller does the Thermo use?
The Thermo is built around the nRF52832-QFxx, from the Nordic nRF family.
How big is the Thermo PCB?
The Thermo measures 35 × 30 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Thermo?
23 components, from 17 distinct parts. The full bill of materials is listed on this page.
Where can I download the Thermo design files?
From the deniskokarev/thermo repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Thermo design in my own project?
The repository has no license, so all rights stay with deniskokarev. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Thermo without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Nordic nRF firmware against it before you order a PCB.
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