Logic OR Gate
https://www.electronics-lab.com/article/logic-or-gate/
Logic OR Gate The logic OR gate gives an output of logic “HIGH” when any of its inputs goes to the “HIGH” logic level. The logic OR gate can have multiple inputs and only one output. The logic OR gate gives an output of logic “LOW” only when all of its inputs are at logic […]
Logic AND Gate
https://www.electronics-lab.com/article/logic-and-gate/
Logic AND Gate We know from the Digital Logic Gates Introduction that a digital circuit at its input and output can have only two – states i.e. either “HIGH” or “LOW”. The logic “HIGH” and “LOW” are also termed as “1” and “0” logic, respectively. The voltage level at the input or output is the determinant […]
Schottky Diode
https://www.electronics-lab.com/article/schottky-diode/
Schottky Diode The Schottky diode is a semiconductor diode formed by the junction of metal with the semiconductor material. It is named after the German physicist W. H. Schottky. The Schottky diode is also known as a hot-carrier diode and Schottky barrier diode. It has a low forward voltage drop and high switching speed. It […]
Three Ways to Make Arduino Works As A USB/TTL Converter
https://www.electronics-lab.com/three-ways-make-arduino-works-usbttl-converter/
Even if you have years working with electronics, you will still find some simple hacks that you never thought about before. Personally and to save money, when I was a student with a very limited budget I knew that my Arduino UNO can work as a USB/TTL(serial) converter. I used to remove the Atmega328P from […]
LED Based Strobe For Entertainment, Events & Warning Signals
https://www.electronics-lab.com/led-based-strobe-entertainment-events-warning-signals/
Strobe provides regular flashes of light. Usually Strobes are designed using Xenon Tubes. Here is LED based simple solution that can be used as strobe for entertainment and events and also as warning signals. Project is based on PIC16F1825 micro-controller with two digit frequency display. Project provides TTL output signal, frequency 1Hz-25Hz, Tact switches provided […]
Inside the 74181 ALU chip: die photos and reverse engineering
https://www.electronics-lab.com/inside-74181-alu-chip-die-photos-reverse-engineering/
A detailed die photos and reverse engineering of the 74181 ALU chip by Ken Shirriff: What’s inside a TTL chip? To find out, I opened up a 74181 ALU chip, took high-resolution die photos, and reverse-engineered the chip.1 Inside I found several types of gates, implemented with interesting circuitry and unusual transistors. The 74181 was a […]
8 Channel Optically Isolated IO Board
https://www.electronics-lab.com/8-channel-optically-isolated-io-board/
Opto-Isolated I/O Board offers a compact & convenient way to interface industrial type inputs/outputs to your microcontroller boards, Signal transmission between circuits of different potentials and impedances etc. Specifications 4 opto-isolated inputs & 4 opto-isolated outputs Std TTL input signals for opto-couplers Interfacing is via 10-pin Box Header and Screw terminal type connector Power source […]
DIY USB to TTL Converter
https://www.electronics-lab.com/diy-usb-to-ttl-converter/
ams31 @ instructables.com show us how to build a DIY USB to TTL Converter using CH340G IC. Lots of USB to TTL modules are available in the market based on various chips like PL2303, FT232, CP2102 and CH340g. I have decided to use CH340g IC. Low costing clones of Arduino UNO & Arduino Nano also […]
16 Channel InfraRed remote controller
https://www.electronics-lab.com/16-channel-infrared-remote-controller/
16 Channel Infra-Red remote controller is based on PIC16F73 Microcontroller from Microchip. The receiver part follows RC5 (Philips) Code Format. Tiny receiver provides 16 latch outputs or 8 Latch + 8 Momentary outputs by closing Jumper J1. All outputs are TTL and can drive Relay board or solid state relay. The circuit uses TSOP1738 Infra-Red […]
Butchered USB TTL Serial Adaptor
https://www.electronics-lab.com/butchered-usb-ttl-serial-adaptor/
Aaron Brady writes: We popped open the case, and there were two main ICs, a Prolific 2303 (the USB to Serial IC) and a ADM3251E (the RS232 line level convertor). I tried to desolder this with no success, but Bas stepped in, cut the leads with a craft knife and ran the iron over the […]