We’ve seemed at the WROOM-DA module ahead of. It’s an ESP32 with two antennas, and [Andreas Spiess] says it is the ugliest ESP32 he’s ever seen. But beauty is only skin deep, immediately after all. Did [Andreas] discover beauty in the twin antennas? Observe the video underneath and see for you.
According to the block diagram, the twin antennas are not employed concurrently but offer you diversity a person at a time. There is also
8GB 8 MB of flash, double the sum on conventional WROOM modules. Mounting the gadget was a little bit complicated considering the fact that most ESP32 provider boards will block some part of the antenna array.
Digging into the software program, you can change modes so you can dedicate a person antenna for receive and a different for transmit or you can permit the device do the job out what’s the finest system on its possess. As you see so generally, the components refers to the antennas as units 1 and 2 when the software uses and 1.
[Andreas] wanted to know if the computerized method worked effectively, so he devised a take a look at that expected a vacation to the roof to look at a conventional module and the dual antenna module. The DA device surely appeared to work far better. Nevertheless, the vehicle method acted in a stunning way. The test device picked up pretty a handful of stations on each antenna, but the vehicle manner acquired much less stations than both of the antennas on its have.
For illustration, oriented in a single route, the module picked up 30 stations on the to start with antenna and 57 on the second. But the computerized method received only 20 stations. There is no rationalization, but the movie reviews have fairly a few theories.
We looked at these modules last year. If you will need a kickstart to your ESP32 adventures, [Andreas] has several beneficial videos. There are also these tutorials.