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STD Nano VFO 3
Nano VFO 3
License
GPL 3.0
License: GPL 3.0Mode:
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Update time：
2023-07-12 11:54:38
Creation time：
2020-11-21 17:54:03
Description
Description
## Nano VFO 3 - simple and powerfull digital VFO
CPU: Atmega328P
PLL: Si5351 and/or Si570
Display: OLED 1.3" 128/132x64, OLED 0.96" 128x64
Encoder: mechanic rotary encode
Keypad: 4 buttons
Support different TRX architecture:
1\. Single IF superheterodyne\.
2\. Direct conversion with 2x or 4x output\.
3\. Direct conversion with quadrature output\.
Builtin CW key: auto/iambic mode, 2 phrase memory, morse decoder
VFOA/B, SPLIT, calibrated S-meter. Support CAT (KENWOOD protocol)
Control attenuator, LNA, 5 band BPF without decoder and 16 band with external decoder
Firmware is opensource and available on github
For more details visit to project homepage [http://dspview.com/viewtopic.php?t=277](http://dspview.com/viewtopic.php?t=277)
Design Drawing
Design Drawing
schematic diagram
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | CR2032-BS-2-1 | B1 | BAT-TH_BS-2-1 | 1 |
| 2 | 0.1u | C1,C2,C5,C6,C9,C10,C11,C14 | 0805 | 8 |
| 3 | 0.1 | C3,C64,C65 | 0805 | 3 |
| 4 | 100u | C7,C17 | CAP-D6.3XF2.5 | 2 |
| 5 | 470u | C8 | CAP-D6.3XF2.5 | 1 |
| 6 | 0.01 | C12,C13 | 0805 | 2 |
| 7 | 0.1 | C63 | C0603 | 1 |
| 8 | 10u | C66 | 0805 | 1 |
| 9 | OLED 1.3" | DISP1 | SSH1106 1.3IN 128X64 I2C (HOLES) | 1 |
| 10 | I2C Ext | H4 | DIP-1X4P-2.54MM-M | 1 |
| 11 | Ctrl | J1 | HDR-M-2.54_2X8 | 1 |
| 12 | VFO Out | J2 | HDR-M-2.54_2X2 | 1 |
| 13 | Enable Ext Power | P1 | HDR-2X1/2.54 | 1 |
| 14 | Power 6V..12V | P8 | HDR-2X1/2.54 | 1 |
| 15 | 4k7 | R10,R11 | 0805 | 2 |
| 16 | 33k | R15 | 0805 | 1 |
| 17 | 15k | R16 | 0805 | 1 |
| 18 | 5k6 | R17 | 0805 | 1 |
| 19 | 2k2 | R18 | 0805 | 1 |
| 20 | 10k | R20 | 0805 | 1 |
| 21 | 1k | R30,R32 | R0603 | 2 |
| 22 | 10k | R33 | R0603 | 1 |
| 23 | Encoder | SW1 | BOURNS_PEC11R-4XXXF-SXXXX | 1 |
| 24 | Key 1 | SW-2SWITCH,SW-3SWITCH,SW-4SWITCH,SW-5SWITCH | SW4-6.2X6.2X5.0MM DIP BUTTON | 4 |
| 25 | Si5351A-A-GT | U2 | MSOP10 | 1 |
| 26 | AMS1117-5.0 | U6 | SOT-223-3LEAD_TABPIN2 | 1 |
| 27 | DS3231 | U9 | SO16W | 1 |
| 28 | AMS1117-3.3 | U10 | SOT-223-3LEAD_TABPIN2 | 1 |
| 29 | CH340G | U17 | SOIC-16_150MIL | 1 |
| 30 | ATMEGA328_TQFP | U18 | TQFP32 | 1 |
| 31 | MINI360BUCK | U20 | MINI360BUCK | 1 |
| 32 | micro USBFemale | USB1 | MICRO-USB-1 | 1 |
| 33 | WIRE_CONNECTION_III_RevE_Date15jun2010 | WC1 | 0805 | 1 |
| 34 | XO 25MHz | X1 | 7050 | 1 |
| 35 | 26MHZ | X4 | OSC 2520 4P/6P | 1 |
| 36 | 25MHz | XTAL1 | HC-49U-PTH | 1 |
| 37 | 16MHz | Y1 | 3213 | 1 |
| 38 | 12MHz | Y2 | 3213 | 1 |
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