Oft
About the Oft PCB
Oft is an open source PCB design by 0x007E, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 26.7 × 25.4 mm, with 27 components from 17 distinct parts.
Other key parts include the SN74LVC1G14 and NE555D. By type, the board carries 9 resistors, 8 capacitors, 4 ICs, 3 connectors and 3 diodes.
It belongs with the rf & radio designs in this gallery.
From the project
Optical Fibre Transceiver
The OFT project is based on a fibre optic transmitter an receiver (FB104). The transmitter is based on a high-output medium-speed infrared LED while the transceiver is built on a high-sensitivity NPN phototransistor. Both are housed in a connector-less style plastic fiber optic package. The transmitter has a typical peak wavelength of 930nm. The bandwith of the receiver is between 400nm to 1100nm. The maximum photosensitivity is around 870nm. The receiver and transmitter is connected with an RX and TX LED over a NE555 timer circuit to indicate if a data transmission occurrs.
Main components on the Oft
Oft bill of materials (BOM)
27 components, 17 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | SN74LVC1G14 | SOT-353_SC-70-5 | U1, U4 |
| 2 | NE555D | SOIC-8_3.9x4.9mm_P1.27mm | U5, U6 |
| 1 | Conn_01x04_Pin | PinHeader_1x04_P2.54mm_Horizontal | J1 |
| 1 | IF-D92 | IF-D92 | J2 |
| 1 | IF-E91A | IF-E91A | J3 |
| 1 | Yellow | LED_D3.0mm | D1 |
| 1 | Green | LED_D3.0mm | D2 |
| 1 | 5V6 | D_MiniMELF | D3 |
| 4 | 100n | C_1206_3216Metric | C1, C2, C3, C4 |
| 2 | 1n | C_1206_3216Metric | C5, C7 |
| 2 | 470n | C_1206_3216Metric | C6, C8 |
| 1 | 1k | R_1206_3216Metric | R1 |
| 1 | 220 | R_1206_3216Metric | R2 |
| 1 | 100k | R_1206_3216Metric | R3 |
| 2 | 220k | R_1206_3216Metric | R4, R6 |
| 2 | 330 | R_1206_3216Metric | R5, R9 |
| 2 | 10k | R_1206_3216Metric | R7, R8 |
Oft design files
The KiCad project lives in the 0x007E/oft repository on GitHub; these links point at the commit this page was built from.
- Layoutpcb/OFT.kicad_pcb
- Schematicpcb/OFT.kicad_sch
Oft: common questions
How big is the Oft PCB?
The Oft measures 26.7 × 25.4 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Oft?
27 components, from 17 distinct parts. The full bill of materials is listed on this page.
Where can I download the Oft design files?
From the 0x007E/oft repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Oft design in my own project?
It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.
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