WiFi based AC dimmer using Nodemcu

We can easily operate AC appliances either ON or OFF but the case is different when we want to change the intensity of light or FAN speed.

Then AC dimmers comes handy.


This pcb layout is for the AC dimmer. This project is WIFI based AC dimmer where we can control the power provides to the appliances.


Following are the components used for this project.


cl - CPl : Capacitor_THT:CP_Radial_DS.0mm_P2.50mm

c2 - C : Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm

c3 - CPl : Capacitor_THT:CP_Radial_DS.Omm_P2.50mm

c4 - C : Capacitor_THT:C_Disc_D3.0mm_W2.0mm_P2.50mm

Dl - 1N4007 : Diode_THT:D_DO-41_SOD81_P10.1émm Horizontal

D2 - 1N4007 : Diode_THT:D_DO-41_SOD81_P10.1émm Horizontal

D3 - 1N4007 : Diode_THT:D_DO-41_SOD81_P10.1émm Horizontal

Da - 1N4007 : Diode_THT:D_DO-41_SOD81_P10.1émm Horizontal

DS - LED : LED _SMD:LED 120€_321éMetric_Padl.42x1.7S5mm_HandSolder

dl - UART : Connector _PinHeader_2.54mm:PinHeader_1x0S_P2.S4mm_Vertical

J2 - AC_IN : TerminalBlock:TerminalBlock_bornier-2_P5.08mm

J3 - LOAD : TerminalBlock:TerminalBlock_bornier-2_P5.08mm

MH1 - MountingHole : MountingHole:MountingHole_3.2mm_M3_IS014580

MH2 - MountingHole : MountingHole:MountingHole_3.2mm_M3_IS014580

MH3 - MountingHole : MountingHole:MountingHole_3.2mm_M3_IS014580

MH4 - MountingHole : MountingHole:MountingHole_ 3.2mm _M3_1S014580

Ql - BI136-S500 : Package_TO_SOT_THT:T0-220-3_Vertical

Rl - R : Resistor_SMD:R_1206_3216Metric_Padl.42x1.75mm_HandSolder

R2 - R : Resistor_SMD:R_1206_3216Metric_Padl.42x1.75mm_HandSolder

R3 - R : Resistor_SMD:R_1206_321é6Metric_Padl.42x1.75mm_HandSolder

R4 - R : Resistor_SMD:R_1206_3216Metric_Padl.42x1.75mm_HandSolder

RS - R : Resistor_SMD:R_1206_3216Metric_Padl.42x1.75mm_HandSolder

RE - R : Resistor_SMD:R_1206_3216Metric_Padl.42x1.75mm_HandSolder

R7 - R : Resistor_SMD:R_1206_3216Metric_Padl.42x1.75mm_HandSolder

RS - R : Resistor_SMD:R_1206_3216Metric_Padl.42x1.75mm_HandSolder

RS - R : Resistor_SMD:R_1206_3216Metric_Padl.42x1.75mm_HandSolder

R1O - R : Resistor_SMD:R_1206_3216Metric_Padl.42x1.75mm_HandSolder

SW1 - Flash : Button_Switch_THT:SW_PUSH_émm_HSmm

SW2 - RESET : Button_Switch_THT:SW_PUSH_émm_HSmm

Ul - MOC3021M : Package_DIP:DIP-€_W7.62mm_LongPads

U2 - 4N25 : Package_DIP:DIP-€_W7.é2mm

U3 - 1M1117-3.3 : Package_TO_SOT_SMD:SOT-223-3_TabPin2

U4 - HLK-PMOS : Power_Supply:HLK-PMOS




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Nov 18,2020
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