This project is how to build a temperature and humidity wifi module. Not all the prep work steps for setting up the chip.You will need to load the LUA/NODEMCU software.You can find the latest LUA firmware at https://github.com/nodemcu/nodemcu-firmware...
Normally to simulate an analog voltage with a digital-only pin of a microcontroller you'd use Pulse Width Modulation. This works great for LEDs because your eyes can't the 490 / 976Hz flicker of the standard analogWrite() function. But for audio things...
All the details, I mean ALLLLLL of them, can be found at my blog, 24 Hour Engineer. I recently removed ads from the site so please enjoy the clean browsing experience.You can skip right to the first PiTagErrUs post.This project started because I love...
Recordable optical media, such as CD-R, DVD+\-R discs, possess several properties that may prove beneficial in their use as rotary encoder codewheels: Commonly available and economicalCapable of extremely high resolution compared even to top-of-the-line...
As I gave to someone the first version of the PolaPi, I had to rebuild it. This time I tried to simplify a bit the process, the printer hack is not needed anymore. Please find below some explanations about some hardware choices and the software. HardwareFirst...
I've tried using many alternative computer interfaces to control computers, robots or games in the past, such as: Pupil Labs open-source eye tracker (https://pupil-labs.com/store/),Tobii eye tracker (https://tobiigaming.com/product/tobii-eye-tracker-4c/),brain...
PEMF therapy improves sleep, mental focus, and the body’s overall performance by helping the energy output and regeneration of the body’s cells. Commercial such devices are sold at a price of several hundred...
The board is based on the Atmel ATmega32u4 microcontroller, uses 3.3V power line, runs at 8MHz, breaks out all 13 digital channels, 6 analog input, have ISP port for programming, onboard reset button, TX/RX/Power/D13 LEDs (different colours for good...
There are several groups trying to organize databases of 3D printable files for the visually impaired. We want to link the Hackaday community to these groups. After writing our 3D Printed Science Projects book (which came out in May 2016 from Apress...
Around the same time I started this project I also started to dive in to Kicad. This was a new pcb software for me. I have heard about it in passing but up to this point have not tried it. For this board I decided to change that and go ahead and design...
NodeMCU is very popular in Home Automation. It’s WiFi capabilities and Arduino IDE support making it easier for IoT Applications. It is very tiny and has many Digital I/O pins, Serial Communication and I2C Communication. NodeMCU has a micro...
[from the project archives]Le Dominoux are “LED dominoes”, a blinking LED that propagates from device to device. Each Dominoux comprises a coin cell-powered 555 timer circuit configured as a one-shot, triggered either by a photo...
Have spooky conversations with ethereal AI through this magical keyboard. This custom PCB keyboard is powered by a Raspberry Pi Pico W and connects to any computer via USB. The Pi Pico W connects to WiFi in order to send keyboard input to ChatGPT, which...
The battery in my Lenovo laptop were slowly losing part of it's capacity. The remaining capacity was 69% (good score after 2,5 years) but I need the really long battery time while travelling. The battery statistics according to Lenovo power utility:So,...
Status: Enclosure in productionI am creating a console/simpit for controlling Kerbal Space Program. As much as possible, I want this to be a full replacement for the keyboard and mouse controls. Although this project is for me, I am trying to make this...