This project is a small automatic cooling system for home theater rack. It supports 2 temperature sensors for different zones in the rack and 2 12V PWM fans (standard for PC case cooling).
There is a power switch connector for a switch mounted on the casing (will be designed and 3D printed later). A reset button is provided mostly for reprogramming purpose. There are 4 buttons for setting up temp...
This Smoke Detector Circuit sense the smoke in the air and displays the level of smoke in PPM (parts per million) on LCD display. This circuit triggers the Buzzer when Smoke level becomes higher than 1000 ppm, this threshold value can be changed in the code according to the requirement. This circuit mainly uses MQ2 Smoke/Gas sensor and Arduino to detect and calculate the level of smoke. MQ2 gas se...
Uses MH-Z19 or MH-Z16 CO2 detector and DHT-22 (or DHT-11) Temperature/Humidity sensor to give air quality readout and actuate relays if CO2 level goes above 1000ppm (Lo Alarm for turning on extraction fan) and High Alarm at 5000ppm to sound an alarm etc. Uses large 20 x 4 HD44780 display
Hardware is 100% Complete. Software is about 90% Complete (Works but untested and buzzer/silence not yet wor...
Breakout board for ADAFRUIT Feather based on MCP2515 CAN controller with an 3.3V CAN transceiver.
This board also connects the various interrupt lines to the Feather to allow for better communication performance especially at higher CAN bus bitrates at the tradeoff that a couple of IO pins are occupied by the CAN FeatherWing. I added 0R resistor bridges into each interrupt line. So if interrupt c...
![Automotive 12V to 5V USB charger assembled PCB]
This project presents a nominally 12V to 5V step down power adapter for use in a motor vehicle to supply 5V at up to 2A from a USB socket.
It is intended to be plugged into a cigar lighter socket in a car or other vehicle and can be used with any device that is normally charged from a 5V USB power outlet at up to 1.8A.
Although most rec...
New PCB Pictures!
Split Ortho Keyboard - Full Population
Split Ortho Keyboard - Partial Population
Full Size Ortho Keyboard - Mega Population
Today I'm going to teach you how you can build your own RGB LED Glasses very easily and cheap.
This has always been one of my biggest dreams and it finally came true!
A huge shout out to [EasyEDA] for the amazing PCB's and personal support! :)
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**The parts you will...
*WARNING* This design needs to be revised if you intend to use interrupts for the encoders. I will rework the entire thing to address a few issues, se be warned if you base your design on it.
MSP430-based voltage and current adjustable power supply. Aiming for 0-12V, 0-1A, but can easily be modified for higher voltages and currents. No pre-tracking switchmode for now, might be a good idea for h...
Fits in type 6063-T5 aluminum junction boxes 71*25*85mm
PIC Firmware (as a complete MPLABX Project) attached for a basic transparent gateway function.
Only 300 lines with no dependent libraries so Easy to understand and modify to your favourite CPU as required.
**Capacitance meter with a current source to measure C from 1 pF to 400+ mF range**
At the beginning of a huge thank to you for the Dillon from EasyEDA Team for helping to make this documentation. Without him, this description could not have been made.
Thank you very much Dillon. I'm owe You.