2 layers70 × 70 mm
RoomUnit
kvoit/FloorHeatingController_HW
Contoller board for up to 10 floor heading circuits. Thermostats via MQTT or 868MHz RF (to be developed). Changed from 1-Wire to 868MHz connectivity in version 2.0.
31 parts2Apache-2.0
2 layers110 × 110 mm
FloorHeatingCentral
kvoit/FloorHeatingController_HW2Contoller board for up to 10 floor heading circuits. Thermostats via MQTT or 868MHz RF (to be developed). Changed from 1-Wire to 868MHz connectivity in version 2.0.
- Size
- 110 × 110 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 72
- Nets
- 103
- Pads
- 300
- Tracks, vias
- 683, 48
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 27 Nov 2018
- Updated
- 8 Oct 2022
Overview
FloorHeatingCentral is an open-source printed circuit board by kvoit, from the kvoit/FloorHeatingController_HW repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 110 × 110 mm with 72 parts on 103 nets, routed with 683 tracks and 48 vias.
It is built around the ESP32-DEVKITC-VE, MP1584EN and 74HC595D,118, with the LM1117-5.0 among its other parts. Its parts include 27 resistors, 18 connectors, 11 transistors, 6 ICs and 5 capacitors. It belongs with the ESP32 boards of this library.
Main components
4
ESP32-DEVKITC-VE
-- WiFi Modules ROHSEspressif SystemsWiFi ModulesMP1584EN
SOIC-8-EP-20℃~+85℃ 1 100kHz~1.5MHz 4.5V~28V Adjustable Buck Buck Built-in SOIC-8-EP DC-DC Converters ROHSMonolithic Power SystemsDC-DC Converters
74HC595D,118
SOIC-16-40℃~+125℃ 1 100MHz 19ns@4.5V,50pF 2V~6V 74HC 8 Serial-to-Serial or Parallel Tri-State SOIC-16 Shift Registers ROHSNexperiaShift Registers
LM1117-5.0
SOT-2231 1.3V@(1000mA) 15V 1A 2mA 5V Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHShongjiachengUncategorised
README
README.mdFloor heating hardware
Contoller board for up to 10 floor heading circuits. Thermostats via MQTT or 868MHz RF (to be developed). Changed from 1-Wire to 868MHz connectivity in version 2.0.
Controller
Central controller for my floor heating based on the ESP32.
Connectivity
- Wifi (MQTT implemented) and BTLE (currently unused) from ESP32.
- AES encrypted and optionaly ATSHA204 authenticated 868MHz radio (to be implemented).
- 10 low-side switched outputs that can be individually controlled and output the input voltage. (Speed limited by the shift registers. Hardware SPI theoretically possible but untested.) Used to power valves.
- 4 Qwiic-compatible I2C ports
- 1 ~7.5V/5V/3.3V/GND ports for powering thermostats.
- JTAG header
Case
Can be mounted in small breaker boxes on DIN rails. Display fits into the opening for breakers.
Images
Software
Software here
Thermostat
Coming soon ...
Parts
72| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 10K | Resistor_SMD:R_1206_3216Metric | R1, R9, R11, R13, R15, R17, R19, R21, R23, R25, R27 |
| 11 | 560R | Resistor_SMD:R_1206_3216Metric | R2, R8, R10, R12, R14, R16, R18, R20, R22, R24, R26 |
| 11 | Q_NMOS_GDS | Package_TO_SOT_THT:TO-220-3_Vertical | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, Q10, Q11 |
| 11 | Screw_Terminal_01x02 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-3-2-5.08_1x02_P5.08mm_Horizontal | J1, J4, J5, J6, J7, J8, J9, J10, J11, J12, J13 |
| 4 | 100R | Resistor_SMD:R_0201_0603Metric | R3, R4, R5, R7 |
| 4 | Conn_01x04_Male | Connector_JST:JST_SH_BM04B-SRSS-TB_1x04-1MP_P1.00mm_Vertical | J15, J16, J17, J18 |
| 3 | 10u | Capacitor_Tantalum_SMD:CP_EIA-3216-18_Kemet-A | C3, C4, C5 |
| 2 | 0.1u | Capacitor_SMD:C_1206_3216Metric | C1, C2 |
| 2 | 74HC595D_118 | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U2, U3 |
| 2 | MountingHole | parts:PCB_DINrail_holder | H1, H2 |
| 1 | 660R | Resistor_SMD:R_1206_3216Metric | R6 |
| 1 | Conn_01x20 | parts:12864_LCD_128x64 | J3 |
| 1 | Conn_02x05_Odd_Even | Connector_IDC:IDC-Header_2x05_P2.54mm_Vertical | J2 |
| 1 | ESP32-DevKitC | Espressif:ESP32-DevKitC | U1 |
| 1 | Jumper_2_Open | TestPoint:TestPoint_2Pads_Pitch2.54mm_Drill0.8mm | JP1 |
| 1 | LED | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | LM1117-5.0 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U6 |
| 1 | MP1584 | mp1584:MP1584 | U5 |
| 1 | RFM69-ATSHA-breakout | RFM69HCW_ATSHA204A_Breakout:RFM69HCW_ATSHA204A_Breakout | U4 |
| 1 | R_POT | Potentiometer_SMD:Potentiometer_Bourns_3269W_Vertical | RV1 |
| 1 | Screw_Terminal_01x04 | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-3-4-5.08_1x04_P5.08mm_Horizontal | J14 |
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Questions
How big is the FloorHeatingCentral PCB?
It measures 110 × 110 mm and has 2 copper layers, 1.6 mm thick.
What parts does the FloorHeatingCentral use?
72 parts, built around the ESP32-DEVKITC-VE, MP1584EN, 74HC595D,118 and LM1117-5.0. 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 FloorHeatingCentral KiCad files?
From the kvoit/FloorHeatingController_HW repository on GitHub, at the commit this page was made from: the board is CentralUnit/FloorHeatingCentral.kicad_pcb and its schematic CentralUnit/ActuatorConn.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the FloorHeatingCentral design in my own project?
Its repository publishes it under the Apache-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).