2 layers133 × 114.7 mm
2 layers225 × 74.8 mm
TinyBlue42
FrancisUsher/TinyBlue42642 key staggered bluetooth choc keyboard
- Size
- 225 × 74.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 107
- Nets
- 78
- Pads
- 466
- Tracks, vias
- 643, 52
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 27 Jan 2021
- Updated
- 18 Mar 2021
Overview
TinyBlue42 is an open-source printed circuit board by FrancisUsher, from the FrancisUsher/TinyBlue42 repository on GitHub, published under the MIT licence. It is a 2-layer board of 225 × 74.8 mm with 107 parts on 78 nets, routed with 643 tracks and 52 vias.
It is built around the E73-2G4M08S1C, TP4054 and XC6220B331MR-G, with the CD4148WP and AO3407 among its other parts. Its parts include 46 diodes, 44 switches, 9 resistors, 3 ICs and 2 transistors. It belongs with the keyboards and input boards of this library.
Main components
5
E73-2G4M08S1C
SMD,18x13mm-103dBm、-95dBm -40℃~+85℃ 120m 17.05mA 3.3V 8.27mA 8dBm Bluetooth 5.0、Bluetooth 4.2 PWM、SPI、ADC、USB、I2C、ISP、JTAG、DMA nRF52840 Chip SMD,18x13mm Bluetooth Modules ROHSChengdu Ebyte Elec TechBluetooth Modules
TP4054
SOT-23-5L-40℃~+85℃ 1 25uA 4.2V 4.2V~6.5V 500mA Charging IC Lithium Battery Not supported 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 SOT-23-5L Battery Management ROHSUMWBattery ManagementXC6220B331MR-G
SOT-25-40℃~+85℃ 1 1A 3.3V 50dB@(1kHz) 655mV@(1A) 6V 8uA Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown、Enable control、Output discharge Positive SOT-25 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTorex SemiconductorVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
CD4148WP
1206-55℃~+150℃ 1 Independent 1.25V@100mA 150mA 1A 400mW 4ns 5uA@75V 75V 1206 Switching Diodes ROHSLIZSwitching Diodes
AO3407
SOT-23-55℃~+150℃ 1 P-Channel 1.4W 1V 260pF 30V 37pF 4.1A 75mΩ@4.5V P-Channel ±20V SOT-23 MOSFETs ROHSBORNMOSFETs
Parts
107| Qty | Value | Footprint | References |
|---|---|---|---|
| 44 | SW_Push | other-random-parts:SW_PG1350_choc_spacing | SW1, SW2, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23 +28 |
| 43 | CD4148W | Diode_SMD:D_0603_1608Metric | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +27 |
| 2 | 1K | Resistor_SMD:R_0603_1608Metric | R4, R8 |
| 2 | 2M | Resistor_SMD:R_0603_1608Metric | R7, R9 |
| 2 | 5.1K | Resistor_SMD:R_0603_1608Metric | R2, R3 |
| 2 | AO3407 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 1 | 100K | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | 1N5819 | Diode_SMD:D_SOD-323F | D47 |
| 1 | 820K | Resistor_SMD:R_0603_1608Metric | R6 |
| 1 | BLUE | LED_SMD:LED_0603_1608Metric | D45 |
| 1 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1 |
| 1 | Conn_ARM_JTAG_SWD_10 | Connector:Tag-Connect_TC2050-IDC-NL_2x05_P1.27mm_Vertical | J2 |
| 1 | E73-2G4M08S1C | e73:E73-2G4M08S1C-52840 | U1 |
| 1 | HRO-TYPE-C-31-M-12 | Type-C:HRO-TYPE-C-31-M-12 | USB1 |
| 1 | RED | LED_SMD:LED_0603_1608Metric | D46 |
| 1 | TP4054 | Package_TO_SOT_SMD:SOT-23-5 | U3 |
| 1 | XC6220B331MR-G | Package_TO_SOT_SMD:SOT-23-5 | U2 |
Questions
How big is the TinyBlue42 PCB?
It measures 225 × 74.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the TinyBlue42 use?
107 parts, built around the E73-2G4M08S1C, TP4054, XC6220B331MR-G and CD4148WP. 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 TinyBlue42 KiCad files?
From the FrancisUsher/TinyBlue42 repository on GitHub, at the commit this page was made from: the board is tinyblue42.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the TinyBlue42 design in my own project?
Its repository publishes it under the MIT 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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