2 layers68 × 39 mm
2 layers79 × 137.9 mm
Answer questions via a keypad
- Size
- 79 × 137.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 20
- Nets
- 42
- Pads
- 102
- Tracks, vias
- 218, 2
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 17 Sep 2019
- Updated
- 7 Apr 2020
Overview
Keypad is an open-source printed circuit board by maidstone-hackspace, from the maidstone-hackspace/qa-keypad repository on GitHub. It is a 2-layer board of 79 × 137.9 mm with 20 parts on 42 nets, routed with 218 tracks and 2 vias.
It is built around the WEMOS D1 MINI, MT3608 and TP4056. Its parts include 6 resistors, 4 ICs, 3 diodes, 1 capacitor and 1 switch. It belongs with the keyboards and input boards and the ESP8266 boards of this library.
Main components
3
WEMOS D1 MINI
A mini wifi board with 4MB flash based on ESP-8266EX, hardware version 4.0.0.LolinUncategorised
MT3608
SOT-23-6-40℃~+85℃ 1 1.2MHz 100uA、1.6mA 2A 2V~24V Adjustable Boost Boost Built-in No SOT-23-6 DC-DC Converters ROHS西安航天民芯DC-DC Converters
TP4056
ESOP-8-40℃~+85℃ 1 1A 35uA 4.2V 4V~6.5V Charging IC Lithium Battery Support Support 恒流充电、恒压充电、涓流充电、自动再充电、充电终止、可编程充电电流、软启动、欠压锁定 ESOP-8 Battery Management ROHSUMWBattery Management
Parts
20| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 100 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3, R4 |
| 1 | 100u | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C1 |
| 1 | 120 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2 |
| 1 | 150 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | 3.7V LiPo Battery | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | BT1 |
| 1 | 500K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6 |
| 1 | 560k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | Keypad1 |
| 1 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | I2C1 |
| 1 | Conn_01x16 | Connector_PinHeader_2.54mm:PinHeader_1x16_P2.54mm_Vertical | I2C-Parallel1 |
| 1 | LED (Green) | LED_THT:LED_D3.0mm | D3 |
| 1 | LED (Red) | LED_THT:LED_D3.0mm | D1 |
| 1 | LED (Yellow) | LED_THT:LED_D3.0mm | D2 |
| 1 | MCP3421A0T-ECH | Package_TO_SOT_SMD:SOT-23-6_Handsoldering | U4 |
| 1 | MT3608 | Keypad:MT3608_module_SMT | U2 |
| 1 | SW_DIP_x01 | Keypad:Mini_Latching_Torch_Switch | SW1 |
| 1 | TP4056 | Keypad:4056E_LiIon_loader_SMT | U1 |
| 1 | WC1602A | Display:WC1602A | DS1 |
| 1 | WeMos_D1_mini | Module:WEMOS_D1_mini_light | U3 |
Questions
How big is the Keypad PCB?
It measures 79 × 137.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Keypad use?
20 parts, built around the WEMOS D1 MINI, MT3608 and TP4056. 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 Keypad KiCad files?
From the maidstone-hackspace/qa-keypad repository on GitHub, at the commit this page was made from: the board is PCB/KiCad/Keypad.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Keypad design in my own project?
Its repository states no licence, so its author keeps all rights: ask maidstone-hackspace before reusing the design.
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