11/3/2025 - Research

So I want to get into Meshtastic, with a standalone device, but those are expensive, and it be fu to make my own, so inspired by the LILYGO T-Deck I started to research all the components and such, with help from the Meshtastic discord, for now I have the ESP32-S3, a GPS and LoRA module and some components for the battery charging/power circuit.

I still have to add the battery, battery charging IC and all the capacitors resistors and such that work with these components, I have to make my own keyboard and add a screen! (Plus, power, boot and such buttons)

11/5/2025 - Research and some circuit building

So I've been all afternoon reading datasheets and documentation, It's a lot lmao, but I have some circuit build, added usb and powwr supply for the esp, next I need to handle battery charging, step down tp 3.3V, the keyboard etc etc

11/9/2025 3 PM - Charging IC circuit

After like an a couple of hours of reading a datasheet, finding components, etc, I have finished my charging circuit with the BQ24074RGTR as the brains!

11/9/2025 4 PM - Added 3.3V step down converter

To step down the battery voltage to 3.3V i added a TPS6282533DMQ set down converter, to be able to power all my 3.3V components safely, rated for 2A it should be enough.

11/9/2025 5 PM - Added crystal oscillator and also tidied up the schematic

I added a 32.768KHz crystal as an external clocked like stated in the esp datasheet, it is optional but I rather include it because wifi and ble require precise timing, I also made subsheets, also the boot button

11/10/2025 - Added screen and LoRa module

So I added the touch screen and the important LoRa module! Had to translate the Chinese datasheet but I think I got everything right (maybe) now onto the GPS and not much left!

11/11/2025 - Added GPS and soft power button

I wired up the GPS and switched from the ESP32-S3-WROOM1 to the ESP32-S3-WROOM1U (the one with an antenna conector) so I can connect an sma antenna for wifi, I also made a soft power on circuit

11/12/2025 - Added SD card

Added the SPI micro sd card slot, i will now work on making the keyboard with the rp2040 as the brains, the rp2040 will read the keys and send the keycode through I2C

11/13/2025 - Added Keyboard plus some stuff

I added a keyboard powered by an RP2040 as an I2C slave to the ESP, I also added expansion pins to both the esp's and rp2040's left over pins for custom board expansions, now to build the PCB itself. I also cleaned up the labels name to better now what is what

11/14/2025 12 AM - PCBBBB!!!!

After spending all my afternoon staring at KiCad I've made a first rendition of the PCB, I still have to correctly center the screen, label everything, add logos and most importantly, the tracks, so still very wip but very cool

11/14/2025 8 PM - Routing, routing, routing....

I'm going to go crazy, I locked in and spent ALL afternoon routing, and I'm not even finished, I changed the screen and other small things, I have yet to finish routing so I'll get at it tomorrow

11/15/2025 - PCB FINISHEEEED

Finished routing everything, added some labels, had to tweak the size of the board and some other stuff, next I'll handle the BOM and price to ship and get my funding, after that while waiting for funding I'll start the software part, which will consist on adding my device to the firmware and the keyboard code for the RP2040

11/17/2025 - Case

As suggested I've made a case, it's still a WIP, but most of it is done, I will ad some details and fix some issues.

Also I already have an issue to resolve the price issues in the review, I'll just need to buy a heat gun lmao