nsec-badge VS blynk-library

All the source files are open and available on Northsec's Github: https://github.com/nsec/nsec-badge/tree/master/hw/2023/hardware

Step zero is to decide how is your board going to be assembled. Do you feel confident enough to solder and assemble everything yourself or would you defer some of that job to a manifacturer. If you go with a manufacturer, check how they get their parts supply, that will limit which parts you can select. For example, jlcpcb offers a manufacturing service for board assembly, but the parts have to come from lscs. Then the first step is selecting the parts required. This one is currently quite tedious because there's a big part shortage. The bigger costier chips first as everything else will fall around that. In this case, we're looking for the microcontroller and the codec chip, then the power supply chips. I'd choose the microcontroller first as it's an easy but laborious step. You want a chip that has at least all the peripherals you need and make sure that they're not conflicting: some peripherals might block another from being used in certain places. It's a bit of a puzzle to solve. In this specific case, we'd want at least some i2s peripheral and an sdio too, i2c or spi for the screen, with some left over pins and some decent amount of flash that can also be user configured. Next the codec which will require some interface compatible with the microcontroller. For the power supply, i copied the design from a board i already worked on i was board tested and known to work: the 2019 nsec badge

https://blynk.io/ (you can find an example that uses their legacy API in one of my releases)

Like it says, to try and keep up with the changing well levels in the summer at my house, I put together a project to monitor well water levels and update a Blynk app.

From the source code found here: https://github.com/blynkkk/blynk-library/blob/master/src/Blynk/BlynkConsole.h

Check out Blynk: https://blynk.io

I have an Arduino Mega 2560 with an ESP8266 module connected to it via Serial1 as outlined in https://github.com/blynkkk/blynk-library/blob/master/examples/Boards_WiFi/ESP8266_Shield/ESP8266_Shield.ino - basically, this sketch works perfectly as is, but I have it personalized, of course.

That Blynk library sucks badly... it's obviously NOT written with ESP8266 in mind, simply grossly hacked from an Uno to sort-of-work. I see a few places in the header file alone where it can hang and cause a WDT, and the 'ping' that's printed is buried somewhere else in the library, undoubtedly another poorly-planned while() or if-else-hang.

Agreed about google and would add clarity. In the field of IT clarity is critical. If OP had said blynk.io, the .io would have clicked with me that it was a web site. Another guy just asked about PS/2 - I thought he meant the keyboard/mouse interface. Others twigged that he meant Playstation 2.