As I mentioned in my previous post, there were some things that could be improved about the IC-7300 External Keyboard. I closed that post with the thought that before I had a new version of the PCB made, I should check the footprint of the 8P8C connector. And happy that I did.
The 8p8c connectors, that I had based my design on, are 21mm long. Little did I know that there are also models that are only 18 mm long. No need to worry, because a footprint can be adjusted in no time, and the PCB had not been ordered yet either. A few moments later, the new design was ready, so a test fitting could be done.
The footprints of the PJ-324 connectors and the Omron B3F-4055 push buttons had already proved to be correct in the previous prototype. I used them to check, whether the scale on which I had printed out the PCB image, was correct. Everything looked fine this time and a new order for a PCB prototype was sent out. Well in time for the Chinese New Year, which falls on 12 February this year.
Porting the Autmatic Magnetic Loop Tuner project to the Teensy 4.0 platform Building a Nano…
In de kringloopwinkel een spiksplinternieuwe Opinel 9 vinden, met het originele antidiefstal stripje er nog…
Now that the two toroids are prepared, and everything is already mounted into the enclosure…
The project descibes to use a FT37-43 toroid. This toroid is manufactured by Amidon. I'm…
Green wire, 5 turns Start with the green wire. In the parts list it is…
The original design features the Radio-Shack P/N 270-233 box, wich measures 5" 1/16 x 2"…