Simple VFO
About the Simple VFO PCB
Simple VFO is an open source NXP PCB design by m0khz, published on GitHub. It is a 2-layer board measuring 99.1 × 59.7 mm, with 17 components from 13 distinct parts.
Its main chip is the Teensy_3_2, from the NXP family. Other key parts include the Adafruit_Si5351_Module and LT1085-ADJ. By type, the board carries 5 capacitors, 5 resistors, 4 connectors and 3 ICs.
From the project
Simple VFO using Si5351 & custom hardware
A comprehensive video build of this project is available here:
The 2.2" tft module uses the ILI9341 driver there are different versions out there and the pinout changes,
- the boards have been designed for this type: - https://www.elektor.com/2-2-spi-tft-display-module-240x320 * - I bought mine from eBay
The Teensy 3.2 module available from https://www.pjrc.com/store/teensy32.html
Main components on the Simple VFO
Simple VFO bill of materials (BOM)
17 components, 13 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Adafruit_Si5351_Module | Adafruit_Si5351_Module | U1 |
| 1 | Teensy_3_2 | Teensy_3_2 | U3 |
| 1 | LT1085-ADJ | TO-263-3_TabPin2 | U6 |
| 2 | Conn | PinHeader_2x10_P2.54mm_Horizontal | J1, J3 |
| 1 | USB_A | USB_A_Stewart_SS-52100-001_Horizontal | J2 |
| 1 | Conn | PinHeader_1x02_P2.54mm_Vertical | J4 |
| 3 | 100n | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C6, C7, C13 |
| 1 | 10uF elec | CP_EIA-3216-12_Kemet-S_Pad1.58x1.35mm_HandSolder | C9 |
| 1 | 10uF Tant | CP_EIA-3216-12_Kemet-S_Pad1.58x1.35mm_HandSolder | C12 |
| 2 | 10K | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R1, R3 |
| 1 | 100R | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R2 |
| 1 | 120R | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R7 |
| 1 | 365R | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R8 |
Simple VFO design files
The KiCad project lives in the m0khz/Simple_VFO repository on GitHub; these links point at the commit this page was built from.
Simple VFO: common questions
What microcontroller does the Simple VFO use?
The Simple VFO is built around the Teensy_3_2, from the NXP family.
How big is the Simple VFO PCB?
The Simple VFO measures 99.1 × 59.7 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Simple VFO?
17 components, from 13 distinct parts. The full bill of materials is listed on this page.
Where can I download the Simple VFO design files?
From the m0khz/Simple_VFO repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Simple VFO design in my own project?
The repository has no license, so all rights stay with m0khz. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Simple VFO without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug NXP firmware against it before you order a PCB.
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