natsfr F4IHX
@natsfr.bsky.social
F4IHX - Doing FPGA and RF design for fun and profit. Working at https://skunkrf.fr
Jack of all threads, none master of, of better than though master one oftentimes.
@natsfr@mastodon.radio
Jack of all threads, none master of, of better than though master one oftentimes.
@natsfr@mastodon.radio
It was a few month without touching my knife making workshop. Preparing a batch of blade to quench ! :)
October 4, 2025 at 2:37 PM
It was a few month without touching my knife making workshop. Preparing a batch of blade to quench ! :)
Orange qui essaye de te faire bouffer de la merde avec le sourire… plus d’appel sur la multi SIM vive la qualité de service.
September 19, 2025 at 5:33 PM
Orange qui essaye de te faire bouffer de la merde avec le sourire… plus d’appel sur la multi SIM vive la qualité de service.
So the workflow Freecad -> UGS -> CNC is working for me I’m happy. The CAM tool of freecad is still a little raw but I think it’ll not last long before having something user friendly !
September 13, 2025 at 5:37 PM
So the workflow Freecad -> UGS -> CNC is working for me I’m happy. The CAM tool of freecad is still a little raw but I think it’ll not last long before having something user friendly !
First test of my small cnc with geode from freecad :)
September 13, 2025 at 2:40 PM
First test of my small cnc with geode from freecad :)
Ceci est la différence entre les sortie de deux fonctions complexes sensées donner le même résultat. Ça m’étonne pas qu’il y ai des différences résiduelles liées à l’usage des float, sachant qu’il n’y a pas d’accumulation je suis surpris de l’augmentation de l’erreur. À creuser.
August 23, 2025 at 12:35 AM
Ceci est la différence entre les sortie de deux fonctions complexes sensées donner le même résultat. Ça m’étonne pas qu’il y ai des différences résiduelles liées à l’usage des float, sachant qu’il n’y a pas d’accumulation je suis surpris de l’augmentation de l’erreur. À creuser.
Happy I got my hand on an antic generator to test my VLF front end :)
August 1, 2025 at 3:19 PM
Happy I got my hand on an antic generator to test my VLF front end :)
I can’t recommend enough to people spending all their time behind a screen to do some handcrafting in their life. It’s a real fresh air moment for the brain !
July 5, 2025 at 2:12 PM
I can’t recommend enough to people spending all their time behind a screen to do some handcrafting in their life. It’s a real fresh air moment for the brain !
VLF listening system starting to work and send sample to the net !
July 2, 2025 at 8:10 AM
VLF listening system starting to work and send sample to the net !
Pose ton Doctor Who favoris, mauvaise réponse uniquement.
June 30, 2025 at 1:42 PM
Pose ton Doctor Who favoris, mauvaise réponse uniquement.
It’s so hot today even traming my mill is making me sweaty !
June 28, 2025 at 12:33 PM
It’s so hot today even traming my mill is making me sweaty !
Adopted a new radio receiver ! Seems to work but need more testing to be sure :)
May 23, 2025 at 4:37 PM
Adopted a new radio receiver ! Seems to work but need more testing to be sure :)
Uhhmmm I have the feeling that the siglent logic analyser option maybe useless. The pink analog trace is reading same input as the digital 6…. I fear that those long adapter cable are completely passive with no intermediate buffering and so super crosstalk contamined…
May 20, 2025 at 4:15 PM
Uhhmmm I have the feeling that the siglent logic analyser option maybe useless. The pink analog trace is reading same input as the digital 6…. I fear that those long adapter cable are completely passive with no intermediate buffering and so super crosstalk contamined…
I don’t know when everything went wrong I was just making a small board to test my low frequency amplifier chain :D
May 14, 2025 at 11:10 PM
I don’t know when everything went wrong I was just making a small board to test my low frequency amplifier chain :D
Working in a small transceiver based on RP2350 and sx1255. I’ll make a bunch of board if someone is interested. The TX starts to work with a custom modulation soon to be open.
May 8, 2025 at 10:21 AM
Working in a small transceiver based on RP2350 and sx1255. I’ll make a bunch of board if someone is interested. The TX starts to work with a custom modulation soon to be open.
Je match, tu match, on match, nous match, vous match, ils match.
May 7, 2025 at 4:47 PM
Je match, tu match, on match, nous match, vous match, ils match.
When your FPGA debugging is going south !
April 15, 2025 at 8:12 PM
When your FPGA debugging is going south !
Got a new scope for my company ! :)
April 12, 2025 at 9:25 AM
Got a new scope for my company ! :)
Sometime I remember why I love prototyping board directly in the office.
January 28, 2025 at 2:40 PM
Sometime I remember why I love prototyping board directly in the office.
That was sketchy but it’s installed in the workbench ! :)
December 8, 2024 at 10:44 AM
That was sketchy but it’s installed in the workbench ! :)
Doing some interesting test ! :)
November 24, 2024 at 10:40 PM
Doing some interesting test ! :)
Using the CMSIS DSP FFT function the RP2350 can make a 256 point floating 32bit fft in about 300us. The picture show a 10 FFT loop executed 10 time. To reduce overhead.
September 29, 2024 at 11:30 PM
Using the CMSIS DSP FFT function the RP2350 can make a 256 point floating 32bit fft in about 300us. The picture show a 10 FFT loop executed 10 time. To reduce overhead.
Sometime removing a 10k resistor can make your world better !
September 19, 2024 at 1:33 AM
Sometime removing a 10k resistor can make your world better !
Few of my project will benefit of the processor upgrade :)
August 22, 2024 at 10:29 AM
Few of my project will benefit of the processor upgrade :)
Continuing testing on the Xiegu X6200, the FT8 receiver is cool but totally gadget, the UI make it impossible to use. I really dream Xiegu releasing open source firmware.
August 5, 2024 at 11:28 PM
Continuing testing on the Xiegu X6200, the FT8 receiver is cool but totally gadget, the UI make it impossible to use. I really dream Xiegu releasing open source firmware.