Here’s the post I know that a lot of you have been waiting for. Buzz around the Si5351 has been picking up at a pretty rapid clip over the last month or so, but a lot of homebrewers have been hesitant to use it in their designs because one critical parameter has not yet been… Read More Si5351A Investigations Part 7
I don’t have a ton of new updates for you from the NT7S bench, but I wanted to give you a heads up on an error on the Si5351A Breakout Board Rev B and let you know about some exciting stuff brewing on the Si5351 scene. When I created Rev B of the Si5351A Breakout… Read More Si5351A Update
It’s been a while since I’ve posted one of these. I understand that things have been fairly quiet over here in the last few months, so I wanted to let you all know that I’m not dead yet. I’ve actually been working on Etherkit a fair amount in the background, and that has been eating… Read More Wideband Transmission #4
I’ve had a good response to the Si5351A Breakout Board when it was posted on Hackaday last month. There have even been a few folks who went through the trouble of ordering PCBs from OSHPark so that they could build their own copies of the board for experimentation. One of them, Tom AK2B, even constructed… Read More Si5351A Breakout Board Update
I appreciate all of the interest in the Si5351A Breakout Board that I have available on OSHPark. I apologize for not having this available sooner, but here is a GitHub repository which hosts the KiCad design files and a PDF of the Breakout Board schematic, which lists the part numbers for the reference oscillator and… Read More Si5351A Breakout Board Documentation
I’ve been working on getting the little bugs out of the Si5351 SSB rig and making improvements to the circuit. Since SSB QRP operating can be a bit more challenging than CW QRP ops, Dave AA7EE suggested that I think about a speech processor IC to use in place of the op-amp microphone amplifier. He… Read More For Noontime Net
Now that I think I’ve fairly well determined that the Si5351 is suitable for use in a ham radio transceiver, it seems like time to put thought into action and actually try to build one. Ever since discovering that the Si5351 can output multiple independent clocks from one IC, I thought it would be neat… Read More A Prototype for a Si5351-Based SSB Rig
A few exciting developments here on the Si5351 front. First off, I took the C code from my Si5351 library for avr-gcc and converted it to an Arduino/C++ library, which you can find here. It replicates the functionality in the avr-gcc library, but makes it quite a bit easier to rapidly implement designs. I’ve tested… Read More Si5351 Libraries and Breakout Board
The theme of this blog post is not lots of tedious work, but refinement leading to good results. First off, let’s talk about the funny I2C address on the parts which I received from Mouser. Since Digi-Key has no order minimums and very inexpensive shipping available (in the form of USPS First Class mail), I… Read More Si5351A Investigations Part 6
The Si5351 library for avr-gcc that I’ve been promising for the last four posts is finally in a state where I feel comfortable releasing it, so I’ve posted it on GitHub. I think that the documentation posted on the README file and inside the code should be enough to get you going, but if you… Read More Si5351A Investigations Part 5