2 layers110 × 82.5 mm
2 layers110 × 82.5 mm
Tinyci main
superna9999/tinyci3tinyci
- Size
- 110 × 82.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 54
- Nets
- 55
- Pads
- 190
- Tracks, vias
- 312, 82
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 18 Nov 2020
- Updated
- 5 Jun 2025
Overview
Tinyci main is an open-source printed circuit board by superna9999, from the superna9999/tinyci repository on GitHub. It is a 2-layer board of 110 × 82.5 mm with 54 parts on 55 nets, routed with 312 tracks and 82 vias.
It is built around the AMS1117-3.3 and BC817-25. Its parts include 13 connectors, 9 resistors, 9 diodes, 6 capacitors and 4 transistors.
Main components
2
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
BC817-25
SOT-23-55℃~+150℃ 1 NPN 100 100MHz 100nA 300mW 45V 500mA 5V 700mV NPN SOT-23 Bipolar (BJT) ROHShongjiachengBipolar (BJT)
README
README.mdTinyCI
General Concept:
TinyCi Main
Relay board controlled by a W32-ETH01 module.
Input: 5V
Produced:
- v0.5: x5 produced, x4 soldered, x3 used in production
- v0.7: x5 produced & used in production
- v0.8: Design done
ESP32 Firmware: see firmware/tinyci-fw/
Remote Relay Control script: see firmware/tinyci-fw/tinyci-relay.py
TinyCi USB
Secondary Relay board controlled by the W32-ETH01 on the main board.
Input: 5V to 12V
Produced:
- v0.1: x5 produced, x3 soldered, x2 used in production
- v0.3: x5 Produced, x0 used in production
TinySerial
Quad FTDI board + breakout of all FTDI I/Os with the TinyCi form factor + holes to hook a Pi/LaFrite/LePotato to control the FTDI + TinyCi USBs.
Input: USB
Produced:
- v1: x5 Produced, failed to bringup, will be replaced with OctoSerial using CH348Q
LICENCE
CERN OPEN HARDWARE LICENCE v1.1Parts
54| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 220R | Resistor_SMD:R_1206_3216Metric | R5, R6, R7, R8, R9 |
| 5 | Jack-DC | Connector_BarrelJack:BarrelJack_Horizontal | J1, J2, J3, J6, J7 |
| 5 | LED | LED_SMD:LED_1206_3216Metric | D9, D10, D11, D12, D13 |
| 4 | 1000uF | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C2, C4, C5, C6 |
| 4 | 1K | Resistor_SMD:R_1206_3216Metric | R1, R2, R3, R4 |
| 4 | BC817-25 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q4 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_Pad | H1, H2, H3, H4 |
| 4 | S1BB-13-F | Diode_SMD:D_SMB_Handsoldering | D1, D2, D3, D4 |
| 4 | SANYOU_SRD_Form_C | Relay_THT:Relay_SPDT_SANYOU_SRD_Series_Form_C | K1, K2, K3, K4 |
| 4 | USB_A_Stacked | Connector_USB:USB_A_Wuerth_61400826021_Horizontal_Stacked | J10, J11, J12, J13 |
| 2 | 10uF | Capacitor_Tantalum_SMD:CP_EIA-7343-31_Kemet-D | C1, C3 |
| 2 | Conn_01x06_Male | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J8, J9 |
| 2 | Conn_01x13_Male | Connector_PinHeader_2.54mm:PinHeader_1x13_P2.54mm_Vertical | J4, J5 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | LOGO | TinyCI:just-ci-it | G*** |
| 1 | TestPoint | TestPoint:TestPoint_Pad_D2.0mm | TP1 |
The 52 most common of 54 parts.
Questions
How big is the Tinyci main PCB?
It measures 110 × 82.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Tinyci main use?
54 parts, built around the AMS1117-3.3 and BC817-25. 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 Tinyci main KiCad files?
From the superna9999/tinyci repository on GitHub, at the commit this page was made from: the board is tinyci-main/tinyci-main.kicad_pcb and its schematic tinyci-main/USB_Connectors.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Tinyci main design in my own project?
Its repository states no licence, so its author keeps all rights: ask superna9999 before reusing the design.
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