Switch3w
About the Switch3w PCB
Switch3w is an open source ESP8266 PCB design by ohaut, published on GitHub. It is a 2-layer board measuring 60 × 49 mm, with 57 components from 29 distinct parts.
Its main chip is the ESP-12E, from the ESP8266 family. Other key parts include the MCP16301, FAN3100TSX and NC R-78E3.3-0.5. By type, the board carries 19 resistors, 13 capacitors, 9 connectors, 6 ICs, 3 transistors and 2 diodes.
It belongs with the iot & wireless designs in this gallery.
From the project
Relay control (double throw for lights)
base prototype IOT LED controller =================================
3 channel led controller based on the ESP12-E, this is an opensource piece of hardware meant to control 3 LED channels, and to integrate with [openhab][2] via [mqtt][2] protocol.
This module is a big version, meant to serve as SDK or handling higher currents.
[1]: http://www.openhab.org [2]: http://mqtt.org
Main components on the Switch3w
Switch3w bill of materials (BOM)
57 components, 29 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MCP16301 LM1117-3.3 | SOT-223 | U1 |
| 1 | ESP-12E | ESP-12E | U2 |
| 3 | FAN3100TSX | SOT-23-5 | U3, U4, U5 |
| 1 | NC R-78E3.3-0.5 | TO-220 | U6 |
| 3 | IRF540N | TO-220 | Q1, Q2, Q3 |
| 1 | BARREL_JACK | JACK_ALIM | CON1 |
| 5 | CONN_2 | bornier2 | P1, P2, P6, P7, P8 |
| 1 | CONN_01X05 | Pin_Header_Straight_1x05 | P3 |
| 1 | PIR SENSOR | Pin_Header_Straight_1x03 | P4 |
| 1 | CONN_01X03 | Pin_Header_Angled_1x03 | P5 |
| 1 | SW_PUSH | SW_PUSH_SMALL | SW1 |
| 4 | MHOLE | MHOLE_3MM | Z1, Z2, Z3, Z4 |
| 1 | 1N4148 SMD 500mA SOD-123 | SOD-323 | D1 |
| 1 | LED | LED-0603 | D4 |
| 1 | 10UF 150uF 5V | SMD Capacitor Case F | C1 |
| 1 | 100NF 4.7uF | C_0603 | C2 |
| 1 | 2.2UF 4.7uF | C_0603 | C6 |
| 2 | 100NF 100nF | C_0603 | C7, C13 |
| 4 | 100nF | C_0603 | C8, C9, C14, C15 |
| 3 | 4.7uF | C_0603 | C10, C11, C12 |
Show 9 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 150uF 25V | SMD Capacitor Case F | C16 |
| 1 | 10K | R_0603 | R1 |
| 4 | 100 | R_0603 | R2, R9, R10, R15 |
| 1 | 15K | R_0603 | R3 |
| 6 | 10K | R_0603 | R4, R5, R6, R11, R13, R14 |
| 2 | 100 | R_0603 | R7, R8 |
| 1 | 470 | R_0603 | R12 |
| 3 | NC 160 | R_0603 | R16, R17, R18 |
| 1 | 1K | R_0603 | R19 |
Switch3w design files
The KiCad project lives in the ohaut/switch3w repository on GitHub; these links point at the commit this page was built from.
Switch3w: common questions
What microcontroller does the Switch3w use?
The Switch3w is built around the ESP-12E, from the ESP8266 family.
How big is the Switch3w PCB?
The Switch3w measures 60 × 49 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Switch3w?
57 components, from 29 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Switch3w design files?
From the ohaut/switch3w repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Switch3w design in my own project?
The repository has no license, so all rights stay with ohaut. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Switch3w without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP8266 firmware against it before you order a PCB.
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