T12 Soldering Controller based on Attiny85, 0.98" OLED display, encoder and buzzer.
-Temperature PID controller
-One shared pin to read encoder and output buzzer signal
-Graphical OLED display (set point, current temperature and analog power bar)
-Input for handle vibration sensor
mp3 player CD Changer Emulator for Nissan Maxima, Pathfinder and Infinity I30. Allows to play mp3 files from USB stick. Pretends to be cd changer to head unit, therefore all head unit and steering wheel controls supported. Based on DFPlayer Mini board and ATTiny85.
Compact speedometer with OLED display and temperature measurement.
It features an ATtiny85 uC with USB programming and battery charging and protection circuitry. I will be using it to measure the speed of my bicycle and determine the temperature around me on my rides.
The project consists of 2 pcbs: the sensor that will be mounted on the wheel of my bike and the actual speedometer.
This board uses a supercapacitor rated at 5.5V which is intended to be charged by a solar cell rated at 6V. The moisture sensing is done by one of the cheap capacitive sensors. The ATtiny85 microcontroller firmware reads the moisture sensor every 30 seconds and blinks the LED if the measured value is over a threshold. The button is used to program the threshold.
* Supercapacitor: https://www.alie...