18 open source boards using the Si5351A-B-GT
Real designs built with the Si5351A-B-GT, from public GitHub projects: a quick way to see how others power, decouple and connect it. Each board comes with its KiCad files, full parts list and a render — and you can simulate its firmware on HardLabs.
ESP32Easysdr
michalin
67.3 × 74.9 mm32 parts2LGPL-3.0114
Microchip SAMMegaBlaster2
AidanHockey5
99 × 99 mm102 parts4LAGPL-3.059
ESP32Endeavour2
petrmikheev
100 × 85 mm263 parts6LGPL-3.049
ESP32VFO-ESP32-Si5351
paulh002
108.4 × 79.9 mm95 parts2LNo license29
Microchip SAMYM2151 Arcade Classic 2
99 × 99 mm111 parts4LAGPL-3.022
AVR/ArduinoIQ SDR
frohro
100 × 100 mm96 parts2LNo license10
AVR/ArduinoSDR Reciever
greenjacketgirl
94.9 × 72.8 mm120 parts2LNo license8
AVR/ArduinoOMSDR
HB9UF
50 × 50 mm50 parts2LGPL-3.04
RP2040/RP2350CPTR480-ENGR357 Quadrature SDR
Jeffrey-McCormick
100 × 100 mm244 parts4LMIT2
Radiohat 2.0 Preliminary (not a Hat)
mpvano
85 × 56 mm153 parts4LMIT2
AVR/ArduinoZ180 motherboard
Hyiger-Designs
112.8 × 51.7 mm26 parts2LNo license2
NXPHackRf-Circuit-Board
GitByKaliMeNope
120 × 75 mm439 parts4LCERN-OHL-P-2.01
STM32Mini gpsdo
rhgndf
45 × 42.8 mm74 parts2LNo license1
RP2040/RP2350Rf switchboard
Erhannis
100 × 174.6 mm463 parts4LNo license0
ESP32TX 50MHz 1W
ne9n
232.3 × 186.9 mm51 parts2LNo license0
ESP32Endeavour2 upd
100 × 85 mm238 parts6LGPL-3.049
ESP32RX 50MHz SDR
150 × 85 mm44 parts2LNo license0
FPGADspod up5k
emeb
26.4 × 41.7 mm63 parts4LMIT10
The Si5351A-B-GT in open source designs
The gallery holds 18 open source boards using the Si5351A-B-GT from 16 GitHub repositories; a typical one measures about 100 × 82.5 mm and carries around 99 components.
50% are two-layer designs, the rest use four layers or more, and 56% carry an open source license.
The most starred is Easysdr by michalin.
Parts used alongside the Si5351A-B-GT
Microcontrollers on boards using the Si5351A-B-GT
What boards using the Si5351A-B-GT are built for
Si5351A-B-GT: common questions
Where can I find a Si5351A-B-GT reference design?
Each of the 18 boards on this page is a real design using the Si5351A-B-GT. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
What parts are used alongside the Si5351A-B-GT?
The FST3253, W25Q32JVSS, ATSAMD51J19A-A, LD1117S33TR_SOT223 and LD1117S50TR_SOT223 appear in the most repositories here.
Which microcontrollers do boards using the Si5351A-B-GT use?
Most are built on ESP32 (6), AVR/Arduino (4), RP2040/RP2350 (2) and Microchip SAM (2).
How big is a typical board using the Si5351A-B-GT?
The median is 100 × 82.5 mm, and 50% are two-layer designs.
What is the most popular open source board using the Si5351A-B-GT?
By GitHub stars, Easysdr by michalin, with 114 stars.
Can I simulate one of these boards using the Si5351A-B-GT before building it?
Yes. HardLabs turns a board's netlist and BOM into a working simulation, so you can boot and test firmware against it with no hardware on your desk.