Dwight VA3NXE, put together this desktop hotspot which works the same as the mobile hotspot below. He put a larger 5 inch display on it instead of the typical 3.5 inch display. However the reason for the better power supply was mostly because the wall adapter was not strong enough for the larger display. Some of the characters on the screen were scrambled and it was very unstable. With the extra amperage the problem was solved. Voltage remained the same.
This is the mobile hotspot Dwight setup:
Parts List:
1- Raspberry Pi 3b plus
1- 32 gig micro SD card
1 – mmdvm board simplex type
1 – 3.5″ Nextion enhanced display
1 – 16 gig sd card to program the display. Any card under 32 gig will do as the card is needed only to load display software and drivers. It does not have to stay in
1 – clear acrylic case for the raspberry pi with a cooling fan and 1 for the display
Dwight made the transition piece to join the two together.
1 – rs232 to serial adapter to be used to connect the display to the rasp pi
1 – Milwaukee invertor. It is a bit expensive but Dwight can use it for other things as it makes portability a lot easier.
Software needed:
SD card formatter ( free)
Nextion Editor ( free )
BalenaEtcher ( free )
WPSD software ( free )
Pi-Star software ( free )
It took a little while to figure some things out. But once it came together it was all good!
At Tim McMullin’s (VE3TCS) QTH in Riverside, Sean Monahan (VA3SGM), installed a 48′ medium duty tower with a Ham 3 rotor and a 6 band VA3AQB hex beam antenna. The actual tower height is 44′ as the bottom 4′ is in the concrete and the antenna covers 6, 10, 12, 15, 17 and 20 meter bands.
bordercityradioclub.ca 