4 layers30.8 × 14.8 mm
4 layers30 × 30 mm
WiSer TTL
bitmerse/WiSer52WiSer: Bringing wireless convenience to serial connectivity
- Size
- 30 × 30 mm
- Copper layers
- 4
- Thickness
- 1 mm
- Parts
- 75
- Nets
- 82
- Pads
- 278
- Tracks, vias
- 427, 133
- Pours
- 11
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 7 Sep 2023
- Updated
- 22 May 2024
Overview
WiSer TTL is an open-source printed circuit board by bitmerse, from the bitmerse/WiSer repository on GitHub. It is a 4-layer board of 30 × 30 mm with 75 parts on 82 nets, routed with 427 tracks and 133 vias.
It is built around the ESP32-S2, SN74LV6T17BQAR and AP2112K-3.3TRG1, with the USBLC6-2P6, ESD9B5.0ST5G and B5819WS among its other parts. Its parts include 24 capacitors, 15 diodes, 11 resistors, 5 connectors and 5 inductors. It belongs with the interfaces and adapters boards and the ESP32 boards of this library.
Main components
8
ESP32-S2
QFN-56-EP(7x7)-40℃~+125℃ -97dBm 135mA 150Mbps 2.4GHz 2.4GHz~2.4835GHz 2.8V~3.6V 63mA DMA function SPI、UART、I2C、I2S WiFi transceiver QFN-56-EP(7x7) RF Transceiver ICs ROHSEspressif SystemsRF Transceiver ICs
SN74LV6T17BQAR
WQFN-14-EP(2.5x3)-40℃~+125℃ 1 1.8V~5.5V 20uA 6 6.4ns@5V,50pF 74LV 8mA 8mA Level shifting Push-pull Schmitt trigger WQFN-14-EP(2.5x3) Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
AP2112K-3.3TRG1
SOT-25-5-40℃~+85℃@(Ta) 1 250mV@(600mA) 3.3V 50uVrms 55uA 600mA 65dB@(1kHz) 6V Fixed Over Current Protection、Thermal Shutdown、Enable control Positive SOT-25-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSDiodes IncorporatedVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
USBLC6-2P6
SOT-666-6-40℃~+125℃ 150nA 17V 2 3.5pF 5.25V 5A@8/20us 6V ESD IEC 61000-4-2 Unidirectional SOT-666-6 ESD and Surge Protection (TVS/ESD) ROHSSTMicroelectronicsESD And Surge Protection (TVS/ESD)
ESD9B5.0ST5G
SOD-923(0402)-55℃~+125℃ 1 10V 15pF 5V 8.4V 80W@8/20us 80nA 8A@8/20us Bidirectional ESD IEC 61000-4-2、IEC 61000-4-5 SOD-923(0402) ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
B5819WS
SOD-323-55℃~+125℃ 1A 1mA@40V 25A 40V 900mV@3A Independent SOD-323 Schottky Diodes ROHSMDDSchottky Diodes
2450AT18B100E
1206-45℃~+125℃ 0.5dBi 1.3mm 1.6mm 100MHz 2.45GHz 2W 3.2mm 50Ω Patch Antenna 1206 Antennas ROHSJohanson DielectricsAntennasESD9B3.3ST5G
SOD-923(0402)ESD And Surge Protection (TVS/ESD)TECH PUBLIC
README
README.mdWiSer
Experience seamless wireless serial connectivity with WiSer, a powerful set of two devices (WiSer-USB and WiSer-TTL) designed to facilitate a serial connection between your PC and embedded devices. Say goodbye to cumbersome USB cables and enjoy the freedom of wireless serial communication.
Connection Diagram
WiSer is a fully Open Source project. All hardware design files, firmware source code, and documentation are made available so you can inspect its inner workings. Our goal is to empower users, making it easy to program, understand, customize, and troubleshoot WiSer.
:file_folder: Repository contents
- /docs - Documentation resources (Licensed under CC BY-SA 4.0)
- /hw - Board design files (Licensed under CERN-OHL-P-2.0)
- /src - Firmware source code (Licensed under MIT)
:blue_book: Documentation
:shopping_cart: Purchase Options
WiSer is currently available for purchase through the following platform:
:left_speech_bubble: Need Customization?
Do you need assistance customizing WiSer hardware or firmware to integrate into your product? Feel free to reach out to us via email below to explore and take advantage of our commercial services.
- e-mail: contact@bitmerse.com
- website: bitmerse.com
Parts
75| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 0.1u | Capacitor_SMD:C_0402_1005Metric | C1, C3, C5, C7, C8, C10, C11, C14, C15, C24 |
| 7 | ESD9B5.0ST5G | Diode_SMD:D_SOD-923 | D1, D10, D11, D12, D13, D14, D15 |
| 6 | TBD | Capacitor_SMD:C_0402_1005Metric | C17, C18, C19, C20, C21, C23 |
| 4 | 1u | Capacitor_SMD:C_0402_1005Metric | C4, C6, C13, C22 |
| 4 | B5819WS | Diode_SMD:D_SOD-323_HandSoldering | D2, D3, D4, D5 |
| 3 | 10u | Capacitor_SMD:C_0402_1005Metric | C2, C12, C16 |
| 3 | 180 | Resistor_SMD:R_0402_1005Metric | R9, R10, R11 |
| 3 | LED | LED_SMD:LED_0402_1005Metric_Pad0.77x0.64mm_HandSolder | D7, D8, D9 |
| 2 | 10K | Resistor_SMD:R_0402_1005Metric | R5, R8 |
| 2 | 330 | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 2 | 5.1K | Resistor_SMD:R_0402_1005Metric | R3, R4 |
| 2 | Conn_01x02 | Castellated-PinHeaders:PinHeader_1x02_P2.54mm_Vertical | J3, J4 |
| 2 | GND | TestPointPad:TestPoint_Pad_D0.8mm | TP2, TP4 |
| 2 | LOGO | LOGO | G1, G2 |
| 2 | TBD | Inductor_SMD:L_0402_1005Metric | L3, L5 |
| 1 | 100K | Resistor_SMD:R_0402_1005Metric | R7 |
| 1 | 100p | Capacitor_SMD:C_0402_1005Metric | C9 |
| 1 | 2450AT18B100E | 2450AT18B100E:XDCR_2450AT18B100E | E1 |
| 1 | 24n | Inductor_SMD:L_0402_1005Metric | L4 |
| 1 | 2n | Inductor_SMD:L_0402_1005Metric | L1 |
| 1 | 3V3 | TestPointPad:TestPoint_Pad_D0.8mm | TP5 |
| 1 | 40MHz | Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm | Y1 |
| 1 | 499 | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 5V | TestPointPad:TestPoint_Pad_D0.8mm | TP1 |
| 1 | AP2112K-3.3TRG1 | AP2112K-3.3TRG1:SOT95P285X140-5N | U2 |
| 1 | BLM15PX600SN1D | Resistor_SMD:R_0402_1005Metric | FB1 |
| 1 | BOOT | TL3365AF180QG:SW_TL3365AF180QG | S1 |
| 1 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Horizontal | J2 |
| 1 | Conn_01x08 | Castellated-PinHeaders:PinHeader_1x08_P2.54mm_Horizontal | J5 |
| 1 | ESD9B3.3ST5G | Diode_SMD:D_SOD-923 | D6 |
| 1 | ESP32-S2 | ESP32-S2:ESP32-S2 | U3 |
| 1 | L_Ferrite_Coupled_Small_1243 | DLM0NSM900HY2D:FIL_DLM0NSM900HY2D | L2 |
| 1 | SN74LV6T17BQAR | SN74LV6T17BQAR:WQFN14_BQA_TEX | U4 |
| 1 | U0RXD | TestPointPad:TestPoint_Pad_D0.8mm | TP3 |
| 1 | USBLC6-2P6 | USBLC6-2P6:SOT50P160X60-6N | U1 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_G-Switch_GT-USB-7010ASV | J1 |
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Questions
How big is the WiSer TTL PCB?
It measures 30 × 30 mm and has 4 copper layers, 1 mm thick.
What parts does the WiSer TTL use?
75 parts, built around the ESP32-S2, SN74LV6T17BQAR, AP2112K-3.3TRG1 and USBLC6-2P6. 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 WiSer TTL KiCad files?
From the bitmerse/WiSer repository on GitHub, at the commit this page was made from: the board is hw/WiSer-TTL/WiSer-TTL.kicad_pcb and its schematic hw/WiSer-TTL/WiSer-TTL.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the WiSer TTL design in my own project?
Its repository states no licence, so its author keeps all rights: ask bitmerse before reusing the design.