DIY Hot Air Station using Arduino (ON/OFF Based Heat Controller).
Arduino Pro Mini for all the magic.
TM1637 4-Digit Display Module for display purposes.
LM358 based amplifier to read thermocouple voltages for measuring current temperature.
4 buttons to set the desired temperature required.
BTA16 with MOC3041 and other suitable passives as the heater controller.
Manual temperature calibration is n...
Telescope OnStep goto controller - Arduino MEGA 2560 board
More info about OnStep goto controller on [Howard Dutton project](http://www.stellarjourney.com/index.php?r=site/equipment_onstep) or [OnStep News](https://groups.io/g/onstep)
For box see https://www.thingiverse.com/thing:2748375
#####Another recommended link:
* [My OnStep ST4 Handheld controller](https://www.thingiverse.com/thing:26...
Uses MOSFETs to intialize power and maintain power by HIGH output on PD7. Initiated by trigger-switch momentary closing.
Circut includes NRF2401 to transmit trigger event and battery status to listening unit.
Self power-down with PD7 LOW.
Credit and thanks to Ralph S Bacon YouTube channel:
A dual microcontroller board for controlling "Neopixel" LEDs, with one micro dedicated to driving the LEDs while the other micro is busy reading push buttons, polling rotary encoders, reading IR remote signals etc etc.
The microcontrollers -two atmega328s -communicate with one another over their I2C bus. The very short wire run negates the need for the usual pull up resistors on the bus.
Project to help writing and reading contents of a particular EEPROM (AT28C64B).
Used Flip-Flops instead of shift registers because that's what I had at the moment.
Bonus LED to make it look more cool (wired to OE of EEPROM).
Example Arduino source code included (can clear memory or dump memory contents).
Atmega chips can consume way less power. It is useful to be able to create your own atmega circuits, instead of using Arduino in your projects. You will find schematics and matching boards.txt files in this project.
This projects is a device controlled thru i2C, it has a set of instructions to control two leds, two buzzers and a combination of them.
The device uses an ATTiny85 and it connects to an RaspberryPi to send the commands.
The instruction for the device are:
- 0x00 --> Does nothing
- 0x01 --> All Buzzers ON, All LEDs OFF
- 0x10 --> Al Buzzers OFF, All LEDs ON
- 0x11 --> All Buzzers ON, All LEDs O...