
SmartFuseBox
k3ldar/PowerControlHub
PowerControlHub is a flexible automation controller for 12V systems. It combines relay switching, sensor monitoring, and smart‑home connectivity (MQTT, Home Assistant, REST, BLE) into one device.

Developower-v2.0 Board
Developower v2.0 is an open-source printed circuit board by leoheck, from the leoheck/developower-v2.0 repository on GitHub. It is a 2-layer board of 92 × 72.2 mm with 50 parts on 61 nets, routed with 473 tracks and 36 vias.
It is built around the XL4015E1, SRD-12VDC-SL-C and SS54. Its parts include 16 connectors, 9 capacitors, 9 resistors, 5 diodes and 2 ICs. It belongs with the AVR (ATmega, ATtiny) boards of this library.
This project is an effort to recreate Developower-v2.0 board on Kicad.
This is the Developower-v2.0 board used on those Chinese 3018 CNC's.
This is the current version of the layout, but it is still a work in progress.
A simple cover for the board can be found here too.

| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 3 | 100n | Capacitor_SMD:C_0805_2012Metric | C7, C8, C9 |
| 3 | 220/35V | Capacitor_SMD:CP_Elec_8x10 | C1, C2, C3 |
| 3 | LED | LED_SMD:LED_0603_1608Metric | D1, D2, D4 |
| 3 | Pololu_Breakout_A4988 | Developower:Pololu_Breakout-16_15.2x20.3mm | J2, J4, J6 |
| 2 | 100n | Capacitor_SMD:C_1206_3216Metric | C5, C6 |
| 2 | Y | Developower:JST_S4B-XH-A(LF)(SN) | J11, J13 |
| 1 | 100k | Resistor_SMD:R_0805_2012Metric | R6 |
| 1 | 10K | Resistor_SMD:R_0805_2012Metric | R1 |
| 1 | 10k | Resistor_SMD:R_0805_2012Metric | R5 |
| 1 | 12-36V | Developower:BarrelJack_Horizontal | J7 |
| 1 | 12V | Developower:JST_S2B-XH-A(LF)(SN) | J12 |
| 1 | 12V-36V | Developower:JST_S2B-XH-A(LF)(SN) | J15 |
| 1 | 16k | Resistor_SMD:R_0805_2012Metric | R4 |
| 1 | 1k | Resistor_SMD:R_0805_2012Metric | R7 |
| 1 | 1k8 | Resistor_SMD:R_0805_2012Metric | R2 |
| 1 | 220/50V | Capacitor_SMD:CP_Elec_10x10.5 | C4 |
| 1 | 2k | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | 47u/5A | Developower:L_Vishay_IHLP-4040 | L1 |
| 1 | 4k7 | Resistor_SMD:R_0805_2012Metric | R8 |
| 1 | 5k | Resistor_SMD:R_0805_2012Metric | R9 |
| 1 | Arduino_Nano | Developower:Arduino_Nano | J8 |
| 1 | CNC_OUT2 | Developower:BarrelJack_Horizontal | J16 |
| 1 | LASER | Developower:JST_S2B-XH-A(LF)(SN) | J1 |
| 1 | Logo_Open_Hardware_Small | Developower:chinese-text | T1 |
| 1 | MELF | Diode_SMD:D_MiniMELF | D5 |
| 1 | Misc | Connector_PinHeader_2.54mm:PinHeader_2x14_P2.54mm_Vertical | J9 |
| 1 | Mode | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J10 |
| 1 | PC817 | Package_DIP:SMDIP-4_W9.53mm | U1 |
| 1 | SRD-12VDC-SL-C | Developower:Relay_SPDT_SANYOU_SRD_Series_Form_C | K1 |
| 1 | SS54 | Diode_SMD:D_2512_6332Metric | D3 |
| 1 | V_LASER | Developower:JST_S3B-XH-A(LF)(SN) | J3 |
| 1 | WJ0625A | Package_TO_SOT_SMD:TO-252-2 | Q2 |
| 1 | X | Developower:JST_S4B-XH-A(LF)(SN) | J14 |
| 1 | XL4015E1 | Package_TO_SOT_SMD:TO-263-5_TabPin6 | U2 |
| 1 | Y2 | Package_TO_SOT_SMD:SC-59 | Q1 |
| 1 | Z | Developower:JST_S4B-XH-A(LF)(SN) | J5 |
It measures 92 × 72.2 mm and has 2 copper layers, 1.6 mm thick.
50 parts, built around the XL4015E1, SRD-12VDC-SL-C and SS54. 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.
From the leoheck/developower-v2.0 repository on GitHub, at the commit this page was made from: the board is board.kicad_pcb and its schematic board.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask leoheck before reusing the design.

k3ldar/PowerControlHub
PowerControlHub is a flexible automation controller for 12V systems. It combines relay switching, sensor monitoring, and smart‑home connectivity (MQTT, Home Assistant, REST, BLE) into one device.

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