TFI2CEXT01
About the TFI2CEXT01 PCB
TFI2CEXT01 is an open source PCB design by ThunderFly-aerospace, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 25 × 15 mm, with 25 components from 13 distinct parts.
Other key parts include the MIC5504-3.3YM5 and TCA4307. By type, the board carries 6 modules, 6 resistors, 4 connectors, 4 capacitors, 3 diodes and 2 ICs.
It belongs with the sensors and robotics & motion designs in this gallery.
From the project
I2C bus wire length extension module. Enabling the use of more extensive bus interconnection.
I²C bus extension module. This module allows an extension of the usable total length of the I2C bus on the UAV. Most I2C bus instances benefit from having TFI2CEXT positioned midway between master and slave, where its signal amplification is most effective in both directions.
In practice, I2C devices vary in driving capability, and I2C signals are often affected by capacitive load or unwanted signal coupling. TFI2CEXT can effectively isolate bus segments, ensuring devices only see the segment's wiring load up to the TFI2CEXT. Thus, placing TFI2CEXT closer to the "problematic" I²C device is…
Main components on the TFI2CEXT01
TFI2CEXT01 bill of materials (BOM)
25 components, 13 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MIC5504-3.3YM5 | SOT-23-5 | U1 |
| 1 | TCA4307 | VSSOP-8_3.0x3.0mm_P0.65mm | U2 |
| 6 | HOLE | dira_3mm | M1, M2, M3, M4, M5, M6 |
| 4 | SM04B-GHS-TB | JST_GH_SM04B-GHS-TB_1x04-1MP_P1.25mm_Horizontal | J1, J2, J3, J4 |
| 1 | LED GREEN | LED_1206_mill | D1 |
| 1 | BZX585-B5V6.115 | D_SOD-523 | D2 |
| 1 | LED RED | LED_1206_mill | D3 |
| 1 | 10UF 10uF | C_0805_2012Metric | C1 |
| 2 | 100nF | R_0603_1608Metric | C2, C4 |
| 1 | 1UF 1uF | R_0603_1608Metric | C3 |
| 1 | 130R | R_0603_1608Metric | R1 |
| 4 | 10k | R_0603_1608Metric | R2, R3, R5, R6 |
| 1 | 287R | R_0603_1608Metric | R4 |
TFI2CEXT01 design files
The KiCad project lives in the ThunderFly-aerospace/TFI2CEXT01 repository on GitHub; these links point at the commit this page was built from.
TFI2CEXT01: common questions
How big is the TFI2CEXT01 PCB?
The TFI2CEXT01 measures 25 × 15 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the TFI2CEXT01?
25 components, from 13 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the TFI2CEXT01 design files?
From the ThunderFly-aerospace/TFI2CEXT01 repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the TFI2CEXT01 design in my own project?
Yes, under the terms of its GPL-3.0 license, which ThunderFly-aerospace chose for the repository.
Similar boards
Sensor smd
scottbez1
40 × 20 mm5 parts2LApache-2.04.2k
Sensors
StuckAtPrototype
15.2 × 9 mm14 parts4LApache-2.03.8k
Stack chan
stack-chan
50 × 50 mm33 parts2LApache-2.01.7k
Microphone
Mentra-Community
5.5 × 6.1 mm6 parts2LMIT1.2k
TemperaturePCB PANEL
stuartpittaway
116 × 75.5 mm178 parts2LCC-BY-NC-4.01.1k
Cube batteryboard
willem-pennings
95 × 95 mm4 parts2LGPL-3.01.1k