jetlib.sec » Tags » capacitance

Building a capacitance meter is a great exercise. If you’re feeling quite safe in your digital-circuit-only life, this will push just far enough out of the comfort zone for you to see there’s nothing to fear in adding analog circuits to your designs. Here, [Raj] compares a voltage divider and RC timer to calculate the value of [...]

Tags:  capacitance understanding meter capacitance-meter voltage-divider analog-circuits microcontrollers  

Here’s one way to really keep the component count low. [David] developed an NES controller that doesn’t use any buttons. The copper clad has been milled to provide a pad which registers a button push based on capacitance. The board has a SIL header at the top, making it easy to plug into the Arduino [...]

Tags:  controller touch nes david arduino component-count capacitance nintendo hacks  

[Giorgos Lazaridis'] most recent project was to build a capacitive touch pad. Since he’s using a PIC 16F1937 it will be relatively easy. That’s because it has a 16 channel capacitance sensing module built right in. But there are still some design considerations that make the development a bit touching. This isn’t the first time [...]

Tags:  capacitance keypad pic design-considerations touch-pad microcontrollers  

We have been featuring some home made capacitors this week, and [Mike] wrote in to share his with us. While rolled capacitors are nice, they can be somewhat difficult to construct and grow to unwieldy sizes as capacitance and voltages increase. His solution is to stack the layers up using plastic plates. In this forum [...]

Tags:  capacitors plastic plate mike plastic-plates capacitance HackIt  

While working on electronics projects, it’s often necessary to test out different capacitance or resistance values as things are moving along. Depending on what you are testing, this can be a tedious process even when using a breadboard. Instructables user [mattthegamer463] recently built a very useful device that would help out in these situations, and [...]

Tags:  capacitance reistance variable variable-capacitance resistance-values electronics-projects tool hacks  

This elegant looking lamp uses capacitance sensing to turn on and off. [Mikey77] takes us through the process of making the curved circuits and putting it all together. The circuit is built to be modular, so he could use it elsewhere. That’s a pretty good idea for someone who is always tossing projects together. As [...]

Tags:  led lamp touch capacitance circuits hacks