4 layers87.6 × 46.7 mm
Modbus to x
joachimda/modbus-to-x
ESP32 based hardware and firmware stack that bridges modbus RTU devices to modern network services.
58 parts5MIT
4 layers142 × 90 mm
Tarjeta WiFi control techo
alanmonu12/roof-controller- Size
- 142 × 90 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 84
- Nets
- 75
- Pads
- 261
- Tracks, vias
- 402, 99
- Pours
- 17
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 9 Jun 2025
- Updated
- 18 Jul 2025
Overview
Tarjeta WiFi control techo is an open-source printed circuit board by alanmonu12, from the alanmonu12/roof-controller repository on GitHub. It is a 4-layer board of 142 × 90 mm with 84 parts on 75 nets, routed with 402 tracks and 99 vias.
It is built around the ESP32-WROOM-32E-H4, HLK-5M12 and MAX3485CSA+T, with the AHT20, BH1750FVI-TR and LMR54406DBVR-MS among its other parts. Its parts include 19 resistors, 17 capacitors, 6 ICs, 6 connectors and 2 diodes. It belongs with the radio and wireless boards and the ESP32 boards of this library.
Main components
12
ESP32-WROOM-32E-H4
SMD,25.5x18mm-40℃~+105℃ -98dBm 112mA 2.4GHz 20dBm 239mA 3V~3.6V Bluetooth4.2 ESP32-DOWD-V3 On-board PCB Antenna UART、SDIO、SPI、I2C、GPIO SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
HLK-5M12
DIP,38x23mm0.1W 12V 18mm 23mm 38mm 3kV 450mA 5W 70% 70V~350V 70mVp-p 85VAC~264VAC AC/DC-DC Short Circuit Protection、Over Current Protection DIP,38x23mm AC-DC Power Modules ROHSHI-LINKAC-DC Power Modules
MAX3485CSA+T
SO-80℃~+70℃ 1 1 10Mbps 2.2mA 32 3V~3.6V Half-Duplex Transceiver SO-8 RS-485 / RS-422 ICs ROHSMaxim Integrated (Analog Devices)RS-485 / RS-422 ICs
AHT20
SMD-40℃~+120℃ 0%RH~100%RH 2.2V~5.5V 20bit 570uA I2C ±0.3℃ ±2%RH SMD Temperature and Humidity Sensor ROHSAosong ElecTemperature And Humidity Sensor
BH1750FVI-TR
WSOF-6-40℃~+85℃ 2.4V~3.6V 65.535klx I2C Light Intensity WSOF-6 Ambient Light Sensors ROHSROHM SemiconductorAmbient Light Sensors
LMR54406DBVR-MS
SOT-23-6SOT-23-6 DC-DC Converters ROHSMSKSEMIDC-DC Converters
GCD21BR71H104KA01L
0805100nF 50V X7R ±10% 0805 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSMurataMultilayer Ceramic Capacitors MLCC - SMD/SMT
RNCP0805FTD10K0
0805-55℃~+155℃ 10kΩ 200V 250mW Thin Film Resistor ±1% ±100ppm/℃ 0805 Chip Resistor - Surface Mount ROHSStackpole Electronics (SEI)Chip Resistor - Surface MountRMCF0805ZT0R00
0805-55℃~+155℃ 0Ω 125mW 150V Thick Film Resistor 0805 Chip Resistor - Surface Mount ROHSStackpole Electronics (SEI)Chip Resistor - Surface Mount
4N25SM
SOP-6-2.54mm-40℃~+100℃ 1 1.18V 20% 270mW 30V 4.17kV 500mV@2mA,50mA 60mA 6V DC Phototransistor SOP-6-2.54mm Transistor, Photovoltaic Output Optoisolators ROHSonsemiTransistor, Photovoltaic Output OptoisolatorsRNCP0805FTD180R
0805-55℃~+155℃ 180Ω 200V 250mW Thin Film Resistor ±1% ±100ppm/℃ 0805 Chip Resistor - Surface Mount ROHSStackpole Electronics (SEI)Chip Resistor - Surface Mount
PTVS5V0S1UTR
SOD-123W400W 43.5A 5V 5uA 6.4V 9.2V IEC 61000-4-2 TVS Unidirectional SOD-123W ESD and Surge Protection (TVS/ESD) ROHSNexperiaESD And Surge Protection (TVS/ESD)
Parts
84| Qty | Value | Footprint | References |
|---|---|---|---|
| 20 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP1, TP2, TP3, TP12, TP13, TP14, TP15, TP16, TP17, TP18, TP19, TP20, TP21, TP22, TP23, TP24 +4 |
| 8 | 0.1uF | PCM_Capacitor_SMD_AKL:C_0805_2012Metric | C1, C3, C4, C6, C8, C11, C16, C17 |
| 6 | 10K | PCM_Resistor_SMD_AKL:R_0805_2012Metric | R4, R7, R12, R13, R15, R18 |
| 5 | 0 | PCM_Resistor_SMD_AKL:R_0805_2012Metric | R5, R6, R8, R10, R11 |
| 4 | 4N25SM | PCM_Package_DIP_AKL:SMDIP-6_W9.53mm | OC1, OC2, OC3, OC4 |
| 3 | 180 | PCM_Resistor_SMD_AKL:R_0805_2012Metric | R1, R2, R3 |
| 3 | LOGO | LOGO | G***, G***, G*** |
| 3 | TBD | PCM_Capacitor_SMD_AKL:C_0805_2012Metric | C5, C7, C9 |
| 2 | 22uF | PCM_Capacitor_SMD_AKL:C_0805_2012Metric | C2, C13 |
| 2 | PTVS5V0S1UTR | PCM_Diode_SMD_AKL:D_SOD-123F | D1, D2 |
| 1 | 0.1uF | PCM_Capacitor_THT_AKL:C_Disc_D5.0mm_W2.5mm_P5.00mm | C12 |
| 1 | 10mH | WE-CMB_XS:WE-CMB_XS | L1 |
| 1 | 10uF | PCM_Capacitor_SMD_AKL:C_0805_2012Metric | C15 |
| 1 | 10uH | 74405042100:IND_05042100_WRE | L3 |
| 1 | 120 | PCM_Resistor_SMD_AKL:R_0805_2012Metric | R9 |
| 1 | 1A | Fuse:Fuseholder_Cylinder-5x20mm_Schurter_0031_8201_Horizontal_Open | F1 |
| 1 | 1K | PCM_Resistor_SMD_AKL:R_0805_2012Metric | R19 |
| 1 | 1uF | PCM_Capacitor_SMD_AKL:C_0805_2012Metric | C14 |
| 1 | 220uF | PCM_Capacitor_SMD_AKL:CP_Elec_5x3 | C10 |
| 1 | 22K1 | PCM_Resistor_SMD_AKL:R_0805_2012Metric | R17 |
| 1 | 2K | PCM_Resistor_SMD_AKL:R_0805_2012Metric | R14 |
| 1 | 560V | Varistor:RV_Disc_D7mm_W3.4mm_P5mm | RV1 |
| 1 | 69K8 | PCM_Resistor_SMD_AKL:R_0805_2012Metric | R16 |
| 1 | AHT20 | AHT20:PSON100P300X300X110-6N | U4 |
| 1 | BC817-40 | PCM_Package_TO_SOT_SMD_AKL:SOT-23 | Q2 |
| 1 | BH1750FVI-TR | footprints:BH1750FVI-TR_ROM-M | U3 |
| 1 | BSS84P | PCM_Package_TO_SOT_SMD_AKL:SOT-23 | Q3 |
| 1 | Conn_01x02_Pin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J4 |
| 1 | Conn_01x03_Socket | Connector_Phoenix_MC:PhoenixContact_MC_1,5_3-G-3.81_1x03_P3.81mm_Horizontal | J6 |
| 1 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J3 |
| 1 | Conn_01x04_Socket | Connector_Phoenix_MC:PhoenixContact_MC_1,5_4-G-3.81_1x04_P3.81mm_Horizontal | J5 |
| 1 | Conn_01x09_Socket | Connector_Phoenix_MC:PhoenixContact_MC_1,5_9-G-3.81_1x09_P3.81mm_Horizontal | J7 |
| 1 | Conn_ARM_SWD_TagConnect_TC2030-NL | Connector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical | J2 |
| 1 | ESP32-WROOM-32E | RF_Module:ESP32-WROOM-32D | U1 |
| 1 | HLK-5M12 | footprints:HLK-5Mxx_HLK | U5 |
| 1 | LMR54406DBVR | LMR54406DBVR:LMR54406DBVR_TEX | U7 |
| 1 | MAX3485CSA+T | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U6 |
| 1 | SW_Push | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW1 |
Questions
How big is the Tarjeta WiFi control techo PCB?
It measures 142 × 90 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Tarjeta WiFi control techo use?
84 parts, built around the ESP32-WROOM-32E-H4, HLK-5M12, MAX3485CSA+T and AHT20. 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 Tarjeta WiFi control techo KiCad files?
From the alanmonu12/roof-controller repository on GitHub, at the commit this page was made from: the board is Tarjeta-WiFi-control-techo.kicad_pcb and its schematic Tarjeta-WiFi-control-techo.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Tarjeta WiFi control techo design in my own project?
Its repository states no licence, so its author keeps all rights: ask alanmonu12 before reusing the design.
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