

A radiator controller for the ESP32-S2 dev board
- Size
- 44.9 × 45.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 11
- Nets
- 25
- Pads
- 62
- Tracks, vias
- 87, 12
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 17 Aug 2025
- Updated
- 30 Sep 2025
Overview
Top is an open-source printed circuit board by ray33ee, from the ray33ee/radiator_rust repository on GitHub. It is a 2-layer board of 44.9 × 45.1 mm with 11 parts on 25 nets, routed with 87 tracks and 12 vias.
It is built around the AHT20-F and CLT-108-02-F-D-BE-K-TR. Its parts include 3 resistors, 2 connectors, 1 IC and 1 diode.
Main components
2AHT20-F
SMD-6P,3x3mm-40℃~+85℃ 0%RH~100%RH 2.2V~5.5V 980uA I2C ±0.3℃ ±2%RH SMD-6P,3x3mm Temperature and Humidity Sensor ROHSAosong ElecTemperature And Humidity SensorCLT-108-02-F-D-BE-K-TR
SMD,P=2mm-55℃~+125℃ 16P 2 2.1mm 2mm 2mm 4.1A Surface Mount,Vertical Tin SMD,P=2mm Female Headers ROHSSamtecFemale Headers
Parts
11| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | R | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1, R2, R3 |
| 2 | SolderJumper_2_Bridged | Jumper:SolderJumper-2_P1.3mm_Bridged2Bar_RoundedPad1.0x1.5mm | JP1, JP2 |
| 2 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP3, JP4 |
| 1 | AHT20-F | custom:AHT20 | U1 |
| 1 | CLT-108-02-F-D-BE-K-TR | custom:SAMTEC_CLT-108-02-F-D-BE-K-TR | J1 |
| 1 | Conn_01x04_Socket | Connector_JST:JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | J2 |
| 1 | LED_RBGA | LED_SMD:LED_Cree-PLCC4_3.2x2.8mm_CCW | D1 |
Questions
How big is the Top PCB?
It measures 44.9 × 45.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Top use?
11 parts, built around the AHT20-F and CLT-108-02-F-D-BE-K-TR. 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 Top KiCad files?
From the ray33ee/radiator_rust repository on GitHub, at the commit this page was made from: the board is schematics/top/top.kicad_pcb and its schematic schematics/dev_board/dev_board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Top design in my own project?
Its repository states no licence, so its author keeps all rights: ask ray33ee before reusing the design.
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