4 layers64 × 77 mm
OBSPro
FabianSchwartau/OBSPro
Version of the OpenBikeSensor hardware optimized for PCBA
131 parts3LGPL-2.1
4 layers45 × 53 mm
OpenTRV ESP
mpiraux/OpenTRV-ESP2An open-source and open-hardware thermostatic radiator valve based on the ESP32C6 and the 28BYJ-48 stepper motor.
- Size
- 45 × 53 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 64
- Nets
- 62
- Pads
- 271
- Tracks, vias
- 540, 80
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 19 Jan 2025
- Updated
- 15 Feb 2025
Overview
OpenTRV ESP is an open-source printed circuit board by mpiraux, from the mpiraux/OpenTRV-ESP repository on GitHub, published under the CERN-OHL-P-2.0 licence. It is a 4-layer board of 45 × 53 mm with 64 parts on 62 nets, routed with 540 tracks and 80 vias.
It is built around the ESP32-C6-MINI-1U-H4, TLV61048DBV and HT7833, with the SN74LVC2G14DBV, 1N5819WS and BSS123 among its other parts. Its parts include 19 resistors, 17 capacitors, 7 ICs, 6 connectors and 4 diodes. It belongs with the robots and motor control and audio and music boards and the ESP32 and RISC-V boards of this library.
Main components
7
ESP32-C6-MINI-1U-H4
SMD,13.2x12.5mm-105.5dBm -40℃~+105℃ 2.4GHz 20.5dBm 382mA 3V~3.6V 73mA ESP32-C6FH4 Integrated Bluetooth function、Integrated Zigbee function、Support USB interface UART、SDIO、SPI、I2C、GPIO、USB SMD,13.2x12.5mm WiFi Modules ROHSEspressif SystemsWiFi Modules
TLV61048DBV
SOT-23-6-40℃~+125℃@(TJ) 1 100uA 2.65V~5.5V 3.3V~14V 550kHz、1MHz Adjustable Boost Boost Built-in No SOT-23-6 DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
HT7833
SOT-23-5-40℃~+85℃@(Ta) 1 3.3V 500mA 500mV@(500mA) 7uA 8V Fixed Over Current Protection、Over Temperature Protection Positive SOT-89-3 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSHOLTEKVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsSN74LVC2G14DBV
SOT-23-6-40℃~+125℃ 1.4V~3.7V 1.65V~5.5V 10uA 2 2 300mV~1.4V 32mA 32mA 4.7ns@5V,50pF 74LVC Series Schmitt trigger SOT-23-6 Inverters ROHSTexas InstrumentsInverters
1N5819WS
SOD-3231 Independent 1A 25A 40V 500uA@40V 600mV@1A SOD-323 Schottky Diodes ROHSGuangdong HottechSchottky Diodes
BSS123
SOT-23-55℃~+150℃ 1 N-channel 1.4V 1.4nC@10V 100V 170mA 22pF 2pF 3.5pF 680mW 6Ω@10V、10Ω@4.5V N-Channel SOT-23 MOSFETs ROHShongjiachengMOSFETsFDN340P
SOT-23-55℃~+150℃ 1 P-Channel 1.5V 121pF 20V 2A 500mW 56pF 7.2nC@4.5V 70mΩ@4.5V 779pF P-Channel SOT-23 MOSFETs ROHSonsemiMOSFETs
README
README.mdOpenTRV-ESP
An open-source and open-hardware thermostatic radiator valve based on the ESP32C6 and the 28BYJ-48 stepper motor.
The design phase is ongoing and documented.
License
All the software source code is available under the MIT license while the hardware design files and derivatives are available under the CERN Open Hardware Licence Version 2 - Permissive.
Credits
Inspired by https://github.com/fabianmuehlberger/OpenValve.
Parts
64| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 10k | Resistor_SMD:R_0402_1005Metric | R3, R5, R6, R7, R8, R9, R10, R11, R16 |
| 8 | 100n | Capacitor_SMD:C_0402_1005Metric | C1, C4, C7, C10, C12, C16, C17, C18 |
| 4 | 10µ | Capacitor_SMD:C_0603_1608Metric | C5, C9, C11, C15 |
| 4 | 1M | Resistor_SMD:R_0402_1005Metric | R1, R2, R4, R12 |
| 3 | 180k | Resistor_SMD:R_0402_1005Metric | R13, R14, R15 |
| 3 | 1N5819WS | Diode_SMD:D_SOD-323 | D1, D3, D4 |
| 3 | 1µ | Capacitor_SMD:C_0402_1005Metric | C2, C3, C8 |
| 2 | 100R | Resistor_SMD:R_0603_1608Metric | R17, R19 |
| 2 | BSS123 | Package_TO_SOT_SMD:SOT-23 | Q2, Q3 |
| 1 | 10uF 25V X5R | Capacitor_SMD:C_0603_1608Metric | C13 |
| 1 | 2.2uH | Inductor_SMD:L_Sunlord_SWPA5040S | L1 |
| 1 | 20m | Resistor_SMD:R_0603_1608Metric | R18 |
| 1 | 330uF 6.3V | Capacitor_Tantalum_SMD:CP_EIA-7343-20_Kemet-V | C6 |
| 1 | Boot | mpiraux:DEALON_5.5x2m | SW2 |
| 1 | Buttons | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J3 |
| 1 | EN Push | mpiraux:DEALON_5.5x2m | SW1 |
| 1 | ESP32-C6-MINI-1/U | PCM_Espressif:ESP32-C6-MINI-1 | U3 |
| 1 | FDN340P | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | HT7833 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | I2C | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J2 |
| 1 | INA219AxDCN | Package_TO_SOT_SMD:SOT-23-8_Handsoldering | U7 |
| 1 | LED | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | LiPo | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | BT1 |
| 1 | SHT40 | Sensor_Humidity:Sensirion_DFN-4_1.5x1.5mm_P0.8mm_SHT4x_NoCentralPad | U1 |
| 1 | SN74LVC2G14DBV | Package_TO_SOT_SMD:SOT-23-6 | U5 |
| 1 | Screen | Connector_JST:JST_PH_B8B-PH-K_1x08_P2.00mm_Vertical | J4 |
| 1 | Stepper Motor | Connector_JST:JST_XH_B5B-XH-A_1x05_P2.50mm_Vertical | J5 |
| 1 | TB6612FNG | Package_SO:SSOP-24_5.3x8.2mm_P0.65mm | U6 |
| 1 | TLV61048 | Package_TO_SOT_SMD:SOT-23-6 | U4 |
| 1 | TagConnect_TC2030 | Connector:Tag-Connect_TC2030-IDC-FP_2x03_P1.27mm_Vertical | J1 |
| 1 | USB_C_Plug_USB2.0 | Connector_USB:USB_C_Receptacle_XKB_U262-16XN-4BVC11 | P1 |
| 1 | V_SM | TestPoint:TestPoint_Pad_D1.0mm | TP2 |
| 1 | V_SM | TestPoint:TestPoint_Pad_D1.5mm | TP1 |
The 62 most common of 64 parts.
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Questions
How big is the OpenTRV ESP PCB?
It measures 45 × 53 mm and has 4 copper layers, 1.6 mm thick.
What parts does the OpenTRV ESP use?
64 parts, built around the ESP32-C6-MINI-1U-H4, TLV61048DBV, HT7833 and SN74LVC2G14DBV. 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 OpenTRV ESP KiCad files?
From the mpiraux/OpenTRV-ESP repository on GitHub, at the commit this page was made from: the board is pcb/OpenTRV-ESP.kicad_pcb and its schematic pcb/OpenTRV-ESP.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the OpenTRV ESP 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).