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2 layers91.3 × 91.3 mmWing combo, the printed circuit board in 3D

A large Feather Wing board that can control tools and helps manage authorization in a community workshop

Size
91.3 × 91.3 mm
Copper layers
2
Thickness
1.6 mm
Parts
135
Nets
115
Pads
458
Tracks, vias
1,313, 112
Pours
37
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
7 Mar 2024
Updated
11 Apr 2026

Overview

Wing combo is an open-source printed circuit board by Toolauth, from the Toolauth/wing-combo repository on GitHub. It is a 2-layer board of 91.3 × 91.3 mm with 135 parts on 115 nets, routed with 1,313 tracks and 112 vias.

It is built around the CFM06S050-T, 74HC02 and AMS1117-3.3, with the LM393, AO3400A and JQC-3FF/005-1ZS(551) among its other parts. Its parts include 40 resistors, 24 capacitors, 24 connectors, 4 ICs and 3 diodes.

Main components

8

README

README.md

Combined Use Board

This is the flagship board for the Toolauth project. More information about use, setup, and firmware is available in this repo's wiki.

Combined use circuit board, front and back

It can allow for the management of power tools, and serve as the gateway for user authorization in a shared workshop.

The board has the following features:

  • A stack of relays & a contactor for controlling power to the downstream tool.
  • Its own power supply, to draw from the line supplying the downstream tool (no extra power needed, if under 220VAC).
  • An ADE7953 current sensor, to monitor energy use/ status of the connected tool.
  • Connectors to add in an RFID card reader (workshop member's badges can swipe).
  • Connections for a hardware bypass, for quick-enabling of the tool.
  • Simple connection for panel-mounted Red & Green status LEDs.
  • 5V supply (from onboard transformer) in USB and solder-able form, for future expansion.

How do I play with this PCB design?

It is as easy as downloading this design by whatever means you like: zip file, clone, etc. Then, open the wing-combo.kicad_pro file with any version of KiCAD you like, but the newest version will probably be best.

Adafuit Feather Specification

In avoidance of obsolescence, we have designed this board to the Adafruit's Feather Specification. The logic here is that the Feather specification itself should allow us to upgrade the 'brain' of this wing without needing a major re-design.

Yes, we could have designed a specific ESP32 into the board. But experience with previous generations has taught us that it is more convenient to make the boards with a MAC address removable.

IOT Hosting

This project was designed to work with Home Assistant and ESPHome, because they allow us to host the whole solution on-premises. However, this board is not tied to that stack by any means. There are lots of ways firmware and software could come together to make this work.

Design Software

  • Schematic and board designed in KiCAD.
  • Graphics designed in Inkscape.
  • Ordered as assembled boards from JLCPCB.

Parts

135
QtyValueFootprintReferences
1510kResistor_SMD:R_0603_1608MetricR2, R3, R4, R22, R23, R24, R25, R28, R30, R31, R36, R37, R38, R39, R40
131kResistor_SMD:R_0603_1608MetricR1, R5, R6, R14, R15, R16, R17, R18, R20, R21, R26, R27, R29
11no-filter-1Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mmJP1, JP2, JP3, JP4, JP5, JP6, JP7, JP8, JP9, JP15, JP16
1033nFLED_SMD:LED_0603_1608MetricC3, C4, C5, C6, C7, C8, C9, C10, C11, C12
6AO3400APackage_TO_SOT_SMD:SOT-23T1, T2, T3, T4, T5, T6
5bridgedJumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mmJP10, JP11, JP12, JP18, JP19
4100Resistor_SMD:R_0603_1608MetricR9, R10, R11, R12
4100nFLED_SMD:LED_0603_1608MetricC13, C16, C17, C22
4Conn_01x03_FemaleConnector_JST:JST_PH_B3B-PH-K_1x03_P2.00mm_VerticalJ13, J14, J15, J17
3Connector_Audio:Jack_3.5mm_CUI_SJ1-3525N_HorizontalJ5, J6, J7
34.7uFCapacitor_THT:CP_Radial_D5.0mm_P2.00mmC18, C19, C23
3Screw_Terminal_01x06screw_terminal:CONN-TH_6P-P5.00_MX128-5.0-06P-GN01-CU-Y-AJ20, J21, J22
20.1uFLED_SMD:LED_0603_1608MetricC1, C2
22.2kResistor_SMD:R_0603_1608MetricR7, R8
220pFLED_SMD:LED_0603_1608MetricC20, C21
2499kResistor_SMD:R_0603_1608MetricR13, R19
256kResistor_SMD:R_0603_1608MetricR34, R35
2Conn_01x02_FemaleConnector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_HorizontalJ18, J19
2Conn_01x04_FemaleConnector_JST:JST_PH_B4B-PH-K_1x04_P2.00mm_VerticalJ11, J12
2Conn_01x12Connector_PinSocket_2.54mm:PinSocket_1x12_P2.54mm_VerticalJ1, J3
2Conn_01x16Connector_PinSocket_2.54mm:PinSocket_1x16_P2.54mm_VerticalJ2, J4
2FuseFuse:Fuseholder_Cylinder-5x20mm_Stelvio-Kontek_PTF78_Horizontal_OpenF1, F2
2JQC-3FF/005-1ZS(551)Relay_THT:Relay_SPDT_SANYOU_SRD_Series_Form_Crelay1, relay2
2R_USResistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_HorizontalR32, R33
2SS14Diode_SMD:D_SMAD2, D3
2SolderJumper_3_Bridged12Jumper:SolderJumper-3_P1.3mm_Bridged12_RoundedPad1.0x1.5mmJP13, JP14
10.1uFCapacitor_SMD:C_0603_1608MetricC24
110uFCapacitor_THT:CP_Radial_D5.0mm_P2.00mmC14
11uFLED_SMD:LED_0603_1608MetricC15
13.58MHzCrystal:Crystal_HC49-4H_VerticalY1
174HC0274hc02d:SOIC-14_L8.7-W3.9-P1.27-LS6.0-BLU1
1ADE7953xCPPackage_CSP:LFCSP-28-1EP_5x5mm_P0.5mm_EP3.14x3.14mmU2
1AMS1117-3.3Package_TO_SOT_SMD:SOT-223-3_TabPin2U3
1Buzzerbuzzer:BUZ-TH_BD12.0-P7.60-D0.6-FDBZ1
1CFM06S050CFM06S050-E - Cincon:CFM06S050EPS1
1Conn_01x02_FemaleConnector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_VerticalJ9
1Conn_01x02_FemaleConnector_JST:JST_PH_B2B-PH-K_1x02_P2.00mm_VerticalJ10
1Conn_01x06_FemaleConnector_JST:JST_PH_B6B-PH-K_1x06_P2.00mm_VerticalJ16
1H/L1Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_VerticalJ23
1LEDLED_SMD:LED_0603_1608MetricD1
1LM393lm393:SOIC-8_L5.0-W4.0-P1.27-LS6.0-BLU4
1PMOSPackage_TO_SOT_SMD:TSOT-23Q1
1PY14-02Library:Relay_Socket_4PDT_Omron_PY14-02-localrelay3
1PolyfuseFuse:Fuse_1812_4532MetricF3
1USB_C_Receptacle_USB2.0_16Pusbc:USB-C-TH_GT-USB-7055J8
1poweredConnector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_VerticalJ24

The 129 most common of 135 parts.

Questions

How big is the Wing combo PCB?

It measures 91.3 × 91.3 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Wing combo use?

135 parts, built around the CFM06S050-T, 74HC02, AMS1117-3.3 and LM393. 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 Wing combo KiCad files?

From the Toolauth/wing-combo repository on GitHub, at the commit this page was made from: the board is wing-combo.kicad_pcb and its schematic ade7953.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Wing combo design in my own project?

Its repository states no licence, so its author keeps all rights: ask Toolauth before reusing the design.

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