Inleiding Ik heb inmiddels wat ervaringen opgedaan met het project. Dat wil ik hier graag delen. De opbouw Nadat ik alle onderdelen verzameld heb, is het eerste wat ik heb gedaan de SI5351 module aangepast. Om de I2C communicatielijnen geschikt…
Auteur: Oude Heer
Inleiding Een tijdje geleden liep ik tegen een leuk zelfbouw project aan: de µSDX. Het is een all mode SDR transceiver voor de HF banden, met een uitgangsvermogen van ongeveer 5W PEP. Hij is in principe geschikt voor 80 t/m…
To start with, you need an image of the RPI operating system (Rasbian, based on Debian Linux). At the time of writing this blogpost, the actual version is Debian Stretch. Visit raspberrypi.org for the latest version.Write the image on an…
One of the things that is still unfinished business is the final amplifier and LPF. To be able to check and adjust the LPF, some measurement equipment would come in handy. I stumbled across the following project by Tom, MI0IOU:…
One of the last comments on the entry where I described the installation of quisk on the RPI was that it was up to the user if he/she wanted to add a nice desktop icon. The point is that I…
Today I found some time to do a little soldering. I needed to add an audio amplifier to drive a speaker, so I don’t need to use headphones all the time. This was not needed when I used computers as…
I have purchased a touch panel for the RPI. This makes a very nice compact unit, and I am quite happy with it.
The Raspberry PI2 (RPI2) is a very nice, small and powerful little computer. It is capable of doing all the DSP tasks to decode and code the audio signals to and from the SDR hardware. I managed to install QUISK…
The construction of the control board is underway. It is mainly the Arduino Micro fitted on a prototyping PCB, with some additional hardware (switching transistors, resistors, etc.) and pin headers for connecting it to other parts of the transceiver later…
One of the nice things of this setup is that it uses a soundcard embedded in the unit itself. First of all, it is a good idea to use an external soundcard. The soundcards usually found in laptops are not…