7 February 2021 at 12:30 #10072
These days I'm far from mine “lab” so I took the opportunity to bring forward another toy, this time based on a common ESP32-WROOM-32 module.
In fact, I was curious to try the bookstores FabGl for ESP32 which allows, Moreover, to create a classic RS232 terminal (it can actually do a lot more…) with color graphics, mouse and sound management.
To make everything easy to assemble, I only used TH components (with the exception of the ESP32 module of course) in order to also facilitate the possible creation of a kit.
For the sounds I have provided a simple amplifier based on an inexpensive LM386 to be able to directly connect a common PC speaker.
Here a first attempt at placing (without routing):8 February 2021 at 9:49 #10076
But it would not be possible to read SD cards?
I would say it could be very close to a Raspberry, therefore with an SO.19 July 2021 at 13:07 #10548
Lately I have had time to take the uTerm2-S PCB and complete it. I shrunk the PCB a bit, the final board is now 90mm x 95mm:
@Picmicro675: Yup, you could add a microSD but as this is basically a terminal I preferred to avoid in order not to complicate the card. Maybe in the future I will make another version with microSD and more in order to have a kind of PC, but in this case I will only use SMD components.
Now all that remains is to wait for the manufacture…25 July 2021 at 18:16 #10557
Long live the back, but as you can understand nowadays everything in SMT. What then if we look at the age I would say that it has passed i 30 years even with the SMT. I don't venture much on that method, I already have difficulty with the step from 1/10 of inch. I tried a couple of experiments and missed the components that are smaller than bread crumbs 🙂23 August 2021 at 15:24 #10577
I started the first tests of the board. Here is a test of the audio part:
And this is the VGA video part with the terminal settings panel (FabGl bookcase):30 August 2021 at 12:48 #10591
While I was testing the card, I couldn't help but install the famous Space Invaders game on it, also inside the FabGl library:
I must say that together with the audio effects it recreates the atmosphere of the arcades of the period very well!
In the meantime I realized that in fact it would be possible to add a microSD card and a PSRAM using the AUX connector just above the ESP32 module, so i tried to draw a small PCB from “mount above” and that I have not by chance called uHat (micro hat, or micro hat). We'll see…2 September 2021 at 18:06 #10596
Cappelletto? 😀 about tortellino?3 September 2021 at 13:43 #10598
Definitely better tortellino… 🙂
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