2 layers110 × 82.5 mm
2 layers110 × 82.5 mm
Tinyci usb
superna9999/tinyci3tinyci
- Size
- 110 × 82.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 49
- Nets
- 36
- Pads
- 128
- Tracks, vias
- 165, 0
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 18 Nov 2020
- Updated
- 5 Jun 2025
Overview
Tinyci usb 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 49 parts on 36 nets, routed with 165 tracks and 0 vias.
It is built around the BC337. Its parts include 9 resistors, 9 diodes, 8 connectors, 4 capacitors and 4 transistors.
Main components
1README
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
49| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 220R | Resistor_SMD:R_1206_3216Metric | R5, R6, R7, R8, R9 |
| 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 | 1N4001 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1, D2, D3, D4 |
| 4 | BC337 | Package_TO_SOT_THT:TO-92_Inline | Q1, Q2, Q3, Q4 |
| 4 | BarrelJack_Horizontal | Connector_BarrelJack:BarrelJack_Horizontal | USB0, USB1, USB2, USB3 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_Pad | H1, H2, H3, H4 |
| 4 | SANYOU_SRD_Form_C | Relay_THT:Relay_SPDT_SANYOU_SRD_Series_Form_C | K1, K2, K3, K4 |
| 4 | USB_A | Connector_USB:USB_A_Stewart_SS-52100-001_Horizontal | J2, J3, J4, J5 |
| 2 | Screw_Terminal_01x02 | TerminalBlock:TerminalBlock_bornier-2_P5.08mm | J6, J7 |
| 1 | Conn_01x04_Male | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J9 |
| 1 | Jack-DC | Connector_BarrelJack:BarrelJack_Horizontal | J1 |
| 1 | LOGO | TinyCI:just-ci-it | G*** |
The 47 most common of 49 parts.
Questions
How big is the Tinyci usb PCB?
It measures 110 × 82.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Tinyci usb use?
49 parts, built around the BC337. 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 usb KiCad files?
From the superna9999/tinyci repository on GitHub, at the commit this page was made from: the board is tinyci-usb/tinyci-usb.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 usb 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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