When [Proto G] enters into an Instructables contest whose only requirement is for the project to be wireless; he does so with style. Let’s put aside for a minute that he’s using a separate ESP32 board for each of the clock’s characters – that’s one for the hour, then one for the colon, one for the minutes and other colon and then the seconds. If you’re keeping count, that’s FIVE ESP32s. But like we said… put that aside and take into account that he’s using three different wireless communication protocols to make the five ESP32s get cozy with one another:
- His phone is connected to a cell tower.
- One of the ESP is connected to his phone to get the time.
- Two other ESPs connect to his phone and send minutes and seconds info to two more ESPs via the board’s internal communication protocol – ESPNOW
In case you’re wondering; the boards he’s using each have an OLED, battery, USB-to-serial converter and of course the ESP32. [Proto G] felt he could add some more complication to his project by crushing the programming connector on one of the boards with his chair. He had to break out the soldering iron and some jumper wire to make a quick but effective repair.
Be sure to check out his Instructables page for more great projects!
Is there someone out there with 19 beamers or at least CRTs?
(len(“yyyy-mm-dd hh:mm:ss”) == 19)
No! Don’t ask! I already guess it…
The space definitely needs an own display to being able to get the same background as the other character cells…
I want to see someone build a clock out of those single digit nixie-tube-esque CRTs featured on HAD a while back.
Lazy u could störst use ech monitor as a pixel and set Up a 32×16 pixel display :)
IoT Rube Goldberg clock.
Conspicuous consumption seems to anti-hackaday. But I like it.
What? This is ridiculous. He could have done it much easier with just 3 ESPs by using LEDs for the dots, driven by 555 circuits.
Not sure if you’re being sarcastic. It is intentionally ridiculous. I wanted to use the two sets of colons to use the ESP-NOW communication protocol. The minutes and seconds are hosting their own wireless network with their own SSID’s.
Volume drives prices down. I think [Proto G] is just trying to do his part for the rest of us.
If only one unit made one pixel then excess and why could be asked.
The red and green wires on the one ESP are a really tasteful accent. Good work.
That is in case a kid takes it to school for show-and-tell, the bomb squad will know which wire to cut.
Obviously, you need to make a 5×7 array of ESP32s to form one digit, and two for each of the colons, so 214 ESP32s would do it.
This needs five iPhone Xs to really add some style…
Just space them out 10 meters apart and call it the world’s widest clock…
What about walking robot with flamethrower and fire extinguisher drawing actual time on ground with flames?
Self driving cars driving in the shape of each number, with a long exposure camera to capture it from overhead.
Eheh, nice use for the so called “wems” ( http://s.click.aliexpress.com/e/jYJyNjI ) ESP 32 based modules with OLED display included.