

Pcb
The design files for the WiFIR PCB
- Size
- 88 × 53 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 40
- Nets
- 42
- Pads
- 163
- Tracks, vias
- 316, 108
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 2 Sep 2020
- Updated
- 31 Mar 2021
Overview
Pcb is an open-source printed circuit board by WiFIR, from the WiFIR/pcb repository on GitHub, published under the BSD-3-Clause licence. It is a 2-layer board of 88 × 53 mm with 40 parts on 42 nets, routed with 316 tracks and 108 vias.
It is built around the WEMOS D1 MINI, BQ27441DRZR-G1A and TLV75733PDBV, with the TSOP38236, VSML3710-GS18 and BAT54WS among its other parts. Its parts include 15 resistors, 6 capacitors, 6 diodes, 5 ICs and 1 transistor. It belongs with the ESP8266 boards of this library.
Main components
9WEMOS D1 MINI
A mini wifi board with 4MB flash based on ESP-8266EX, hardware version 4.0.0.LolinUncategorisedBQ27441DRZR-G1A
SON-12-EP(2.5x4)-40℃~+85℃ 1 2.45V~4.5V 4.2V 93uA I2C Lithium Battery Monitoring IC Support Under-voltage lockout SON-12-EP(2.5x4) Battery Management ROHSTexas InstrumentsBattery ManagementTLV75733PDBV
SOT-23-5-40℃~+125℃@(Tj) 1 1A 3.3V 40uA 46dB@(100kHz) 5.5V 650mV@(1A) 71.5uVrms Fixed Positive Under Voltage Lockout、Over Current Protection、Over Temperature Protection、Soft Start SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsTSOP38236
SIP-3-2.54mm-25℃~+85℃ 10mW 2.5V~5.5V 350uA 36kHz 45m ±45° SIP-3-2.54mm Infrared Remote Receiver (IRM) ROHSVishay IntertechnologyInfrared Remote Receiver (IRM)VSML3710-GS18
PLCC-2(2.8x3)-40℃~+85℃ 1.35V 100mA 160mW 4mW/sr@IF=100mA 5V 60° 940nm PLCC-2(2.8x3) Infrared LED Emitters ROHSVishay IntertechnologyInfrared LED EmittersBAT54WS
SOD-3231 Independent 100mA 1V@100mA 2uA@25V 30V 600mA SOD-323 Schottky Diodes ROHSDiodes IncorporatedSchottky DiodesFDN339AN
SOT-23-55℃~+150℃ 1 N-channel 120pF 1V 1W 20V 25mΩ@4.5V 300pF 4nC@4.5V 5.5A 80pF SOT-23 MOSFETs ROHSTECH PUBLICMOSFETsMBRA140
SMA(DO-214AC)-55℃~+125℃ 1 Independent 1A 30A 40V 500uA@40V 550mV@1A SMA(DO-214AC) Schottky Diodes ROHSonsemiSchottky DiodesTYPE-C-31-M-12
SMD-30℃~+80℃ 1 10,000 cycles 16P 20V 5A 7.35mm Female Surface Mount, Right Angle Type-C SMD USB Connectors ROHSHRO ElectronicsUSB Connectors
README
readme.mdWiFIR
The WiFIR is a WiFi IR blaster / remote, based around a WeMos D1 mini (ESP8266)
The WiFIR was made from a need to control a heatpump / ac to allow pre-heating of a summer-house before arriving. It can however control anything IR controlled.

Parts
40| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 10k | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R4, R10, R14, R15 |
| 3 | 4.7uF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C2, C5, C6 |
| 3 | 4k7 | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R1, R5, R6 |
| 2 | 10nF | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C3, C4 |
| 2 | 470R | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R11, R12 |
| 2 | 5k1 | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R8, R9 |
| 2 | 6R8 | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R3, R7 |
| 2 | LOGO | Personal_graphics:kiwi12.5mm | G***, G*** |
| 2 | VSML3710-GS18 | LED_SMD:LED_PLCC-2 | D1, D3 |
| 1 | 10mR | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R13 |
| 1 | 1k | Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R2 |
| 1 | 1uF | Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C1 |
| 1 | BAT54WS | Diode_SMD:D_SOD-323_HandSoldering | D2 |
| 1 | BQ27441DRZR-G1A | Package_SON:Texas_S-PDSO-N12 | U4 |
| 1 | FDN339AN | Package_TO_SOT_SMD:SOT-23_Handsoldering | Q1 |
| 1 | MBRA140 | Diode_SMD:D_SMA | D4 |
| 1 | MCP73831-2-OT | Package_TO_SOT_SMD:SOT-23-5 | U3 |
| 1 | SW_SPST | Button_Switch_SMD:SW_Push_1P1T_NO_6x6mm_H9.5mm | SW1 |
| 1 | TLV75733PDBV | Package_TO_SOT_SMD:SOT-23-5 | U5 |
| 1 | TSOP38236 | OptoDevice:Vishay_MINICAST-3Pin | U2 |
| 1 | TYPE-C-31-M-12 | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | WeMos_D1_mini | Module:WEMOS_D1_mini_light | U1 |
| 1 | charged | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D6 |
| 1 | charging | LED_SMD:LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D5 |
| 1 | protected 18650 | Battery:BatteryHolder_Keystone_1042_1x18650 | BT1 |
The 38 most common of 40 parts.
Questions
How big is the Pcb PCB?
It measures 88 × 53 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Pcb use?
40 parts, built around the WEMOS D1 MINI, BQ27441DRZR-G1A, TLV75733PDBV and TSOP38236. 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 Pcb KiCad files?
From the WiFIR/pcb repository on GitHub, at the commit this page was made from: the board is pcb.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pcb design in my own project?
Its repository publishes it under the BSD-3-Clause licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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