Flarmusb
About the Flarmusb PCB
Flarmusb is an open source PCB design by kedder, published on GitHub. It is a 2-layer board measuring 47.2 × 21.8 mm, with 22 components from 15 distinct parts.
Other key parts include the LM3940-3.3, CH340G and MAX3232. By type, the board carries 10 capacitors, 3 ICs, 3 connectors, 3 diodes, 2 resistors and 1 crystal.
From the project
PCB design for various electronics projects
This device allows to connect your FLARM (or any other device with IGC-compatible connector) directly to your laptop via USB interface. It create a virtual serial console (COM device on windows) for inspecting data stream or updating firmware.
1. Connect RJ45 connector of the adapter to your FLARM device via any available ethernet cable; 2. Connect micro-USB connector to your computer via standard micro-USB cable 3. Connect DC connector to 12V DC power source to provide power supply to FLARM device
Main components on the Flarmusb
Flarmusb bill of materials (BOM)
22 components, 15 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LM3940-3.3 | SOT-223-3_TabPin2 | U1 |
| 1 | CH340G | SOIC-16_3.9x9.9mm_P1.27mm | U2 |
| 1 | MAX3232 | SOIC-16_3.9x9.9mm_P1.27mm | U3 |
| 1 | 12M | Crystal_HC49-4H_Vertical | Y1 |
| 1 | USB_B_Micro | USB_Micro | J1 |
| 1 | Barrel_Jack_Switch | DC002 | J2 |
| 1 | RJ45_Shielded | RJ45_SOCKET_SHLD | J3 |
| 1 | SS14 | D_SMA | D1 |
| 1 | GREEN | LED_0603_1608Metric | D2 |
| 1 | RED | LED_0603_1608Metric | D3 |
| 2 | 22pF | C_0603_1608Metric | C1, C2 |
| 6 | 100nF | C_0805_2012Metric | C3, C4, C5, C6, C7, C8 |
| 1 | 1uF | C_0805_2012Metric | C9 |
| 1 | 47uF | C_0805_2012Metric | C10 |
| 2 | 520R | R_0805_2012Metric | R1, R2 |
Flarmusb design files
The KiCad project lives in the kedder/kedhw repository on GitHub; these links point at the commit this page was built from.
Flarmusb: common questions
How big is the Flarmusb PCB?
The Flarmusb measures 47.2 × 21.8 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Flarmusb?
22 components, from 15 distinct parts. The full bill of materials is listed on this page.
Where can I download the Flarmusb design files?
From the kedder/kedhw repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Flarmusb design in my own project?
The repository has no license, so all rights stay with kedder. Use it as a reference, and ask the author before reusing the design.
