Ttl Logic Level Tester Pen.

Ttl Logic Level Tester Pen.

“Polarity Tester Pen & TTL Logic Level Tester Pen. This polarity tester pen is slightly different because it is able to test TTL levels and shows the status on a 7 segment display using with the letters: “H” (High) for logic level “1” and “L” (Low) for logic level “0”. In this instructables I will show you how to build one …

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Make A Solar Powered Bug Robot

Make A Solar Powered Bug Robot

“These robots might be small and somewhat simple minded, but their easy construction, unique locomotion, and quirky personality make them great as a first time robotics project. In this project we will be creating a simple bug-like robot that will store light energy until it has enough power to move itself with a vibration motor. This simple robotics project can …

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Lidar/Haptic Feedback Electronic Travel Aid

Lidar/Haptic Feedback Electronic Travel Aid

“This project is an Electronic Travel Aid (ETA) that enables the user to navigate around objects in their path and view the profile of their surroundings. The device delivers spatial information about a small area in front of the user via haptic feedback: range information from time-of-flight (TOF) sensors is mapped to the vibration intensity of vibration motors against the …

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A Mini Multi FM Transmitter - Duo

A Mini Multi FM Transmitter - Duo

“Any techie or electronics nut who knows his/her stuff is always mesmerized by FM audio transmissions. The way it works and how basic it actually is, is something worthy of applaud. Even though it was initially implemented in 1933, it is still present in our current world which tells us how important it must have been. For me, as …

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How Does It Work: DIY Relay Modules

How Does It Work: DIY Relay Modules

“After looking through many instructables it’s clear that many makers love to use the pre-assembled relay modules to switch large loads or mains voltages using their Raspberry Pi or Arduino. These can be bought from places like eBay for as little as 2. There’s many tutorials on how to use them with your microcontroller, and even how to …

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Certamen Quiz Practice Machine

Certamen Quiz Practice Machine

“The Certamen quiz team competition from the Junior Classical League involves quiz questions on Greek/Roman subjects. Individual contestants press buzzer buttons when they have an answer. The machine keeps track of the order in which buttons were pressed, subject to the team-lockout rule that once a player on a team presses a button, the other presses from that team …

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How to Make a PIC-Powered Gas Alarm

How to Make a PIC-Powered Gas Alarm

“Gases such as natural gas can be incredibly dangerous, and can even lead to death if not kept in check. In this DIY Hacking project, we will look at the MQ-2 Gas Sensor, understand how it works, and learn how to make a simple PIC alarm system that both displays the current detection levels and fires an alarm when …

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