Circuits & Schematics Microcontrollers Usage: avr

1. Circuit Forms Single-Pulse Voltage Multiplier
   Circuits Supply Microcontrollers Usage
   .. through D 2 and R 3 . Figure 2. This variation on the circuit in Figure 1 supplies fuse-programming pulses for Atmel AVR microcontrollers. During the output pulse, C 1 must supply the base current for Q 1 and Q 2 , as well as the load ...
   13-12-2022

2. Microcontroller-controlled homemade Proto power supply for Arduino projects
   Circuits Supply Microcontrollers Usage Atmel ATmega328
   .. the output voltage, so I don't have to tie up a multimeter checking the voltage As the supply is designed for testing AVR projects I didn't need more than 5.5 V. This means that the supply could conveniently be powered by two 3.7 V ...
   29-09-2022

3. TinyLoad - Simple Electronic Load based on ATtiny45/85
   Circuits Measurement Microcontrollers Usage Microchip ATtiny10 Attiny13 ATtiny24 ATtiny25 ATtiny44 ATtiny45 ATtiny84 ATtiny85
   TinyLoad is a simple electronic constant current dummy load. The ATtiny measures voltage, current and temperature of the heat sink, calculates power, energy and battery capacity, controls the fan and displays all relevant data on the OLED (Figure ...
   15-11-2021
4. USB Phone Charge Guard
   Circuits Arduino Supply Microcontrollers Usage Microchip ATtiny10 Attiny13 ATtiny24 ATtiny25 ATtiny44 ATtiny45 ATtiny84 ATtiny85
   .. you have to program the ATtiny either before soldering using an SOP adapter, or after soldering using an EEPROM clip. The AVR Programmer Adapter can help with this. If using the Arduino IDE: Make sure you have installed ATtinyCore [ 4 ]. Go ...
   21-09-2021
5. DIY Infrared Thermometer Pen
   Circuits Measurement Printed Circuit Boards (PCB) Microcontrollers Usage Atmel ATmega328P
   .. my soldered chip using a method called Arduino as ISP. The Arduino ISP is an In-System-Programmer that is used to program AVR microcontrollers [ 3 ]. Also, I tried to include a sleep mode so the TermoPen goes to sleep when activated for too ...
   13-09-2021
6. TinyCharger - Single Cell Li-Ion Battery Charger with Monitoring
   Circuits Supply Microcontrollers Usage Microchip ATtiny10 Attiny13 ATtiny24 ATtiny25 ATtiny44 ATtiny45 ATtiny84 ATtiny85
   .. you have to program the ATtiny either before soldering using an SOP adapter, or after soldering using an EEPROM clip. The AVR Programmer Adapter can help with this. If using the Arduino IDE Make sure you have installed ATtinyCore [ 4 ]. Go ...
   19-08-2021
7. TinyCalibrator - OSC Calibrator and High-Voltage Fuse Resetter
   Circuits Microcontrollers Usage Microchip ATtiny10 Attiny13 ATtiny24 ATtiny25 ATtiny44 ATtiny45 ATtiny84 ATtiny85
   .. process and the instructions are well described in the data sheet. Figure 4. High Voltage Serial Programming Interface for AVR. The timer/counters of the ATtiny84 are used for the frequency measurement. PB0 of the target ATtiny, which outputs ...
   04-08-2021
8. ATtiny85 Pulse Oximeter and Photoplethysmograph
   Circuits Arduino Measurement Medicine Microcontrollers Usage ATtiny85 SSD1306 MAX30102
   .. I have put another version of the software in the GitHub repository sub-directory nanoPulsePPG that runs on a standard AVR Arduino - tested on a Nano but should also work on an Uno so that you can easily experiment with the software and ...
   15-04-2020
9. Self-Calibrating USB Voltage/Current Meter
   Circuits Measurement Microcontrollers Usage Microchip ATtiny13A
   Tirdad Sadri Nejad Hackster.io With a code size of 1 KB on an ATtiny13A MCU, this tiny module measures voltages up to 22 volts and current up to 5 amps. There are a lot of so-called USB doctor modules which are used for monitoring currents flowing ...
   26-03-2020
10. Tiny microcontroller hosts dual DC/DC-boost converters
    Circuits Supply Microcontrollers Usage Atmel ATtiny13
    .. threshold voltage is hard to find and can be expensive. So, this design uses a BJT (Figure 2). Figure 2. An Atmel ATtiny13 AVR microcontroller regulates two boost-dc/dc-converter outputs using its internal ADCs and PWMs. Microcontrollers ...
    15-02-2019

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