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Hi, looks like a really good project. What did you use for the diffuser?

Question about the math. A sample is 2 bytes so if we change 176k Bytes/sec to samples/sec we get 88200 samples/sec so 8 sample buffer would be 8/88200=91 usec per sample . I guess you figured the time for both left and right channels which would double my time then we are the same?

how much pcbway sell the complete version3 ?

I thought C with Objects was just a fad but now you've convinced me I have been misguided in my thinking all these years.

I wondered why Arduino decided to make their own esp32 board. I don't see the sense in it.

I want to cry, that was my second computer when I was 14, now I'm 53, the first was zx81, I'm learning z80 assembler and I'm making my first game on basic and then on full code machine. I cry, I cry, I cry, thank you.

I have wireless subwoofer How connect only it with esp 32

Can you share the code for the html reciever with the visualization graph thats shown at the end of the video?

An expensive toy to play with 😍😜

That looks amazing, especially if you're able to hit the $50 price point you mentioned somewhere. A volume potentiometer would be great thoug, or at the very least a mute function like you mentioned :D

Latest update! esp32zx.substack.com/p/esp32-s3-zx-spectrum-update-22-06

Cool Project! A parallel port for connecting to outer space would be nice! 😎

You should use a amplifier, because the esp32 will prob struggle with audio out

Hello. I compile this project and uploaded to esp32 ،in terminal see backtrace error?!! What is my mistake?

I’m a bit too young for the 8bit generation, but this looks like great bang for buck to build on a rainy weekend! And so pretty I’d be happy to have it hanging around my lab.

You bet I want one if it ever will be for sale!

Excuse my ignorance but how is the keyboard made? I get that it's a silk screen printed PCB, but how to the keys work? Microswitches beneath the keys? Sorry if his is blindingly obvious...

Cool. But HDMI / VGA output will be better

Could you tell me what solder paste and what flux you are using? I have to solder one of these and having ruined one, I'm looking for any help I can get! thanks! -Brian

joystick support? and usb protection ic is needed.

Good sound. And if you want more voices you have to sing it yourself. That's a quote from the original manual.

It took me some time to realise your not on an original spectrum.

Holy cow, this is just such a neat feat of engineering. I really love the idea of systems with built in BASIC. Grew up in the states, so never had a ZX spectrum, but I did grow up typing in programs that were printed in the back of Boys life magazine into the IBM computer at the library. Thank you for posting this.

Awesome project! Will be fun to get an Oric Atmos core on it .. ;)

I really like this

Any chance of the community being able to get their hands on some code for DIY versions?

The transfer rates are horrendous. The low volume is no picnic either

how did I miss this? o.O it's beautiful!

fkn fantastic

subbed -- I used to play Elite on my BBC model B. I will order when production starts.

Wow! That pcbway colour printing is gonna be so useful for making FR4 front panels (with voids in the solder mask for led shine thru). I've been waiting for one of the inexpensive PCB fab house to introduce this for a long time. I'm really happy now! Think of all the colourful things we can finally make without having to use vinyl stickers or stenciled spray paint... The project looks fantastic - can't wait for the next vid. (although perhaps homage should have been paid to the ZX81/80 by starting with that :) ) Maybe you could do a whole Sinclair series. I still use the Cambridge calculator. Great stuff as always! @atomic14 P.S. If the touch matrix demands end up depleting your available ESP pins you could try multiple MPR121 ic's on the i2c bus. I've had good results with them: Continuously self calibrating. A great and simple Arduino library. 12 channels per chip. 4 i2c addresses selectable. So you could poll 48 discrete touch pads - no diodes! As you need only 40, the unused pins on any MPR121 can be arbitrarily configured as i2c->gpio (proper tri-state) - for driving synchronous APA102/SK9822 leds perhaps.

Very nice indeed!

Great, i would buy one 👍

That is very cool :) Happy memories.

In your test what worked the best in terms of range , and quality of audio data . UDP or ESP-NOW

Would love to try this out! I'd certainly buy one! Takes me right back to my childhood! Well done!

Why include the display? It's just a gimmick and it will make the board much more expensive

Could you make it have composite out or hdmi out. I'd Def want one

so how do the keys work is it some sort of capacitor switch, with some copper contacts under the silk screen?

Really cool mate! New subscriber ✌🏻

pretty interesting. i wish i knew how to do this. makes me want a miniature retro tv from the 70s with dial controls and radio. make it like a portable gaming device with the inside of the tv fitted with console motherboards connected to the back of the screen and all enclosed in a tv shaped box or something.

you can see the rolling shutter on the moon lamp as you change it's color

That silkscreen is glorious

Hi Chris, JLCPCB also have colour silkscreen now, and they do great quality assembly very cost effectively, esp as looks like most of these components are in LCSC...

How about a Sunton ESP32 7" LCD version? Move the processing to the LCD ESP32-S3 with SPRAM and either connect wirelessly or I2c or such for just the keyboard?

Cool as ice! Now, if only the "feature" of random reboots after it's gotten warm is added, too, then it's going to be a perfect recreation! 🤣 I dont know why, but I want one!

That's just awesome!

Squeaktasticaly Awesome !!.......cheers.

It would be nice in a +2 case replacing the tape deck with a screen.