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ESP32 dev board for M5stack V1
Log from Rosmo robot
More: https://github.com/rosmo-robot/Open-Core-M5stack/tree/main/v1#readme

Base PCB Ready
Log from RPN-83
Created the button matrix PCB, with connections for the ESP32, an Adafruit PowerBoost 500, and an LCD/SD card combo board. Ordered all the parts for a prototype. It should come out roughly the same size as a TI-83. The prototype will be thicker, since...

ESP32 Modules
Log from RPN-83
Received the first version of the PCB, did some tests with the ESP32.I'm finding that the ESP32-WROOM modules simply don't have enough pins to do this. The button matrix is 10x5, and then there's a power button (separated because it can be used to wake...

More efficient remote monitoring
Log from Vending Machine for Birds
I have been experimenting with ESP32 and RPi camera modules to record video and pictures as well as log events in log files. While cameras typically demand 100-150 mA,, the boards themselves can make due with ~80mA and can be put to sleep to consume...

2nd version, ESP-32 devboard
Log from Postcard frame
It was pretty clear after testing with the RPi that it was going to be a lot of work to get it into a state that worked robustly and was user friendly for non-technical people. So the next version I decided to move to an ESP-32, which used a lot less...

Alpha PCB on order
Log from Modernize Harmony 880
Alpha PCB design has been completed to test the major aspects of the layout: screen mounting, buttons, case fit, battery contacts. MSP430 micro controller was installed on the PCB with all the connections to the button matrix for testing. ...

Musings on power options
Log from Ventbot: warm side cool, cool side warm
I've been thinking about how to power things. Most PC case fans will run at lots of different voltages, but they expect to run at 12v (DC of course). If a different voltage is supplied, they just run at a different speed. There are some fans available...

FPV Robot: update 1, gathering electronics
Log from FPV robot
(link to blog https://rcrobot.org/?p=106)Have you ever had a project idea sitting in your head that sounds like it'd be awesome but you just never had the motivation to do it? I've had this idea of making an First Person View (FPV) robot for LITERALLY...

Connectivity Progress
Log from Basic Capabilities - IOS -> ESP32 BLE
Thinking back to past projects, they often were unfinished due to incomplete software. Software of they type I wanted was available so it seemed trivial to complete and I moved on. The truth is it was not straight forward for me to do it. I want...

Gloveraille: braille Bluetooth keyboard
Log from Glovraille: another braille Bluetooth keyboard
Gloveraille version 3The Gloveraille prototype version 3 uses an ESP32 development board instead of an Arduino pro mini in version 1 & 2. Therefore the new prototype can be used as a Bluetooth keyboard. Make it yourselfTo make you prototype...

First GUI test
Log from DIY Spin Coater
While waiting for the rest of the parts to arrive, I got started on the user interface. It's programmed using MicroPython running on an ESP32 dev board. I'm very comfortable with Python and had dabbled in MicroPython before, but this was definitely a...

Programming ESP32 Dev Board wirelessly using WiSer
Log from WiSer
In embedded systems, any ESP32 development board is a formidable platform for developers and enthusiasts alike. But what if we told you there's a way to enhance the programming experience, eliminating the need for cumbersome cables and providing the...

Side Project
Log from Delta Printer - Capacitive Nozzle Probe
A digital bubble level was built to measure the platform tilt over the travel range. This consists of an ESP32 dev board with 1.9" LCD and Sparkfun ICM-20948 breakout board. The base was small enough to mount on the effector...

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