2 layers99.5 × 74 mm
2 layers79.1 × 95.4 mm
Nodemcu01
jibonaronno/kicad_projectsPractically there are 2 types of dimmer.
- Size
- 79.1 × 95.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 52
- Nets
- 47
- Pads
- 162
- Tracks, vias
- 286, 15
- Routed
- Yes
- KiCad
- KiCad 5 (file 20210623)
- Created
- 19 May 2025
- Updated
- 30 Mar 2026
Overview
Nodemcu01 is an open-source printed circuit board by jibonaronno, from the jibonaronno/kicad_projects repository on GitHub, published under the CC0-1.0 licence. It is a 2-layer board of 79.1 × 95.4 mm with 52 parts on 47 nets, routed with 286 tracks and 15 vias.
It is built around the HLK-PM01, TLP291-4 and IRF740. Its parts include 18 resistors, 10 diodes, 6 capacitors, 6 transistors and 5 connectors. It belongs with the ESP8266 boards of this library.
Main components
3
HLK-PM01
DIP,34x24mm0.1W 100mVp-p 15mm 20mm 34mm 3W 3kV 5V 700mA 73% 85VAC~265VAC AC-DC Short Circuit Protection、Over Current Protection、Fault self-recovery ±0.2% 插件,34x20mm AC-DC Power Modules ROHSHI-LINKAC-DC Power Modules
TLP291-4
SOIC16Quad Channel Optocoupler, Phototransistor OutputToshibaUncategorised
IRF740
TO-220-55℃~+175℃ 1 N-channel 1.162nF 100W 10A 17pF 32nC@10V 400V 4V 500mΩ@10V N-Channel TO-220 MOSFETs ROHSMinosMOSFETs
README
dimmer_trailing_edge/nodemcu01/README.mdTrailing Edge Dimmer Description
Practically there are 2 types of dimmer.
- Raising Edge
- Trailing Edge
Based on the swithing time position after zero cross detection.
Here is a simple concept of raising and trailing edge switching.
This project focused on trailing edge dimmer construction.
Here it stores energy in C5 and C6 from power line ACL and ACN. From the perspective it only uses positive cycle of the phase to store energy. Turning on the mosfet is occured by Opto U2, and turning off is happened by R14 (10k) . So this dimmer is not suitable for more than 200W.
Found another solution as below:
This 3 channel dimmer is build on ESP8266 NodeMCU . Complete Kicad Drawing is available in https://github.com/jibonaronno/kicad_projects/tree/main/dimmer_trailing_edge/nodemcu01
The Arduino code is available under qnod01 folder. It is required to provide correct Wifi credentials the the Arduino code and also need to find the IP address of NodeMCU. After successfull connection between Wifi and NodeMCU, user can browse to the NodeMCU IP Address from phone browser and control dimming.
Parts
52| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 4007 | Diode_SMD:D_1206_3216Metric | D1, D3, D4, D5, D6, D8, D10 |
| 6 | 10 | Capacitor_SMD:C_1206_3216Metric | C1, C2, C3, C4, C5, C6 |
| 6 | 15K | Resistor_SMD:R_1206_3216Metric | R4, R5, R12, R13, R16, R17 |
| 6 | IRF740 | Package_TO_SOT_THT:TO-220-3_Vertical | Q1, Q2, Q3, Q4, Q5, Q6 |
| 4 | 10K | Resistor_SMD:R_1206_3216Metric | R7, R10, R14, R18 |
| 4 | CONN_03SCREW | Connectors:SCREWTERMINAL-3.5MM-3 | J1, J2, J3, J4 |
| 4 | TLP291 | Package_SO:SOIC-4_4.55x2.6mm_P1.27mm | U1, U2, U3, U5 |
| 3 | 100E | Resistor_SMD:R_1206_3216Metric | R6, R11, R15 |
| 3 | 12V | Diode_SMD:D_1206_3216Metric | D2, D7, D9 |
| 3 | 220E | Resistor_SMD:R_0805_2012Metric | R1, R2, R3 |
| 2 | 33K | Resistor_SMD:R_1206_3216Metric | R8, R9 |
| 1 | Conn_01x10 | Connector_JST:JST_XH_B10B-XH-A_1x10_P2.50mm_Vertical | J5 |
| 1 | Fuse 5A | FuseHolder:Fuseholder5x20_horiz_open_inline_Type-I | F1 |
| 1 | HLK-PM01 | Converter_ACDC:Converter_ACDC_HiLink_HLK-PMxx | PS1 |
| 1 | NODEMCU | nodemcu2:nodemcu2-NODEMCU | M1 |
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Questions
How big is the Nodemcu01 PCB?
It measures 79.1 × 95.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Nodemcu01 use?
52 parts, built around the HLK-PM01, TLP291-4 and IRF740. 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 Nodemcu01 KiCad files?
From the jibonaronno/kicad_projects repository on GitHub, at the commit this page was made from: the board is dimmer_trailing_edge/nodemcu01/nodemcu01.kicad_pcb and its schematic dimmer_trailing_edge/nodemcu01/nodemcu01.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Nodemcu01 design in my own project?
Its repository publishes it under the CC0-1.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).