When the DS18B20 Temperature Sensor is transported over long distances, there is a danger of high voltage pulses being transmitted to the cable connecting the sensor to the control unit. If protective measures are not taken, the induced high voltage will lead to degradation of the crystal substrate where the sensor is located. This causes…
A hot silicone gun was used extensively for a contract job. Since it did not heat up quickly, I solved the problem with a simple rectifier circuit. It was used for about 2 weeks and it did not cause any problems, but constant exposure of the resistor to high voltage may cause problems. I decided…
Magnet polarity detector. You can find out where the south or north of the magnet is by bringing another magnet of known polarity. And if the pole of a known magnet attracts the side of the magnet with polarity, it is opposite if it is unknown (the pole of the unknown magnet). In other words,…
The Hakko 907 Soldering station is built on Arduino Nano, so you won’t need a programmer and various adapters for it again. The circuit has minimal parts and requires no adjustments. Hakko 907 soldering iron circuit has been used for about 5 years and has never caused any problems. Hakko 907 Driver Circuit Features: Designed…
SG90, SG-5010 etc. You can control 24V DC Motor using the Mini Servo Motor driver. PC817 opto couplers and then IRL2203N mosfets are connected to the outputs of the motor driver module. The motor is driven by PWM signal. The circuit was used for steering control of the electric bicycle. 24V DC motor ZGB70R-60SRZ-1 with…
Voltage adjustment from 0.1V to 25V with “+” and “-” buttons; When the “+” and “-” buttons are held down, a slow change begins at 0.1V, after 2 seconds the change accelerates. Min. for 3A version of current limit. Min. for 150mA and 10A version. Setting it to 500mA; The current mode is selected by…
I made an application about converting the old generation ATX power supply to a 0.24v 0.8.5A regulated power supply, as in the project of converting the computer power supply to a battery charger that I shared before. The price of regulated power supplies has increased, this power supply is very useful in your workshop, and…
I tested another combination lock circuit. The function of the system is to receive the signals from the infrared receiver and compare them with the values previously stored in the EEprom of the PIC12F675. After receiving the 4-digit password, it compares the lock activation output and outputs. To set the password, simply press the ‘Prog’…
You can use IR2104 MOSFET full bridge motor driver circuit in your high power motor projects. There are DIP and SMD version PCB drawings of the circuit. 7400 NAND gate IC is used in the signal input. The author faced many problems while implementing this project. An important detail is that if the supply voltage…
Automation project using PIC12F675 Microcontroller automatically discharges water with Electrovalve. Infrared light reflection method is used to detect the presence of a person or object. It can be used in automatic urinal flushing or different automation control projects, scenarios. It is important to isolate the infrared receiver and infrared transmitter led from each other. The…