2 layers100 × 100 mm
2 layers90.2 × 90.2 mm
Helper
siliwho/Helpers-Keyboard- Size
- 90.2 × 90.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 67
- Nets
- 68
- Pads
- 328
- Tracks, vias
- 1,126, 135
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 7 Jan 2025
- Updated
- 8 Jan 2025
Overview
Helper is an open-source printed circuit board by siliwho, from the siliwho/Helpers-Keyboard repository on GitHub. It is a 2-layer board of 90.2 × 90.2 mm with 67 parts on 68 nets, routed with 1,126 tracks and 135 vias.
It is built around the TLC5940PWP, ADG417BN and AMS1117-3.3. Its parts include 32 diodes, 16 switches, 7 ICs, 3 resistors and 2 connectors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
3
TLC5940PWP
HTSSOP-28-EP-40℃~+85℃ 120mA 16 30MHz 3V~5.5V 8% Over-Temperature Protection (OTP)、LED open-circuit protection PWM HTSSOP-28-EP LED Drivers ROHSTexas InstrumentsLED Drivers
ADG417BN
PDIP-8-40℃~+85℃ 1 100ns 12V 160ns 1:1 25Ω 7pC、11pC Bidirectional analog channel、Glitch-free switching PDIP-8 Analog Switches, Multiplexers ROHSAnalog DevicesAnalog Switches, Multiplexers
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
Parts
67| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | D | keyboard_parts:D_SOD123_axial_noSMD | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16 |
| 16 | KEYSW | keyswitches:PG1350_socket | K1, K2, K3, K4, K5, K6, K7, K8, K9, K10, K11, K12, K13, K14, K15, K16 |
| 16 | LED | foots:C_3528v1 | D20, D21, D22, D23, D24, D25, D26, D27, D28, D29, D30, D31, D32, D33, D34, D35 |
| 3 | ADG417BN | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | U3, U5, U6 |
| 3 | R | keyboard_parts:D_SOD123_axial | R1, R2, R3 |
| 2 | AudioJack3_Ground | SJ-43514-SMT:CUI_SJ-43514-SMT | J1, J2 |
| 2 | LOGO | logo.preety:logo15 | G***, G*** |
| 1 | AMS1117-3.3 | AMS1117-3.3:SOT229P700X180-4N | U4 |
| 1 | Battery_Cell | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | BT1 |
| 1 | NRF24L01_Breakout | keyboard_parts:nrf24l01header | U2 |
| 1 | ProMicro | foots:ProMicroPinsFlipped | U1 |
| 1 | TLC5940PWP | Package_SO:HTSSOP-28-1EP_4.4x9.7mm_P0.65mm_EP3.4x9.5mm_Mask2.4x6.17mm_ThermalVias | U7 |
The 63 most common of 67 parts.
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Questions
How big is the Helper PCB?
It measures 90.2 × 90.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Helper use?
67 parts, built around the TLC5940PWP, ADG417BN and AMS1117-3.3. 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 Helper KiCad files?
From the siliwho/Helpers-Keyboard repository on GitHub, at the commit this page was made from: the board is helper.kicad_pcb and its schematic helper.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Helper design in my own project?
Its repository states no licence, so its author keeps all rights: ask siliwho before reusing the design.