John Faxholm

John Faxholm

John Faxholm
Flere idéer fra John
A very basic and easy to make arduino PC oscilloscope.Features: 50K samples/second(actually it can go up to 110K but the signal will become noisy) Auto trigger Frequency counter Reasonably accurate voltage readings (depending on the accuracy of the resistors used for the voltage dividers) Optional: selectable voltage range: 5V, 6.6V, 10V, 20VYou'll need: An Arduino Leonardo or Arduino Micro2 crocodile clamps a 0.1µF capacitor (optional) a 5.1V zener diode (optional) a pc wi...

A very basic and easy to make arduino PC oscilloscope.Features: 50K samples/second(actually it can go up to 110K but the signal will become noisy) Auto trigger Frequency counter Reasonably accurate voltage readings (depending on the accuracy of the resistors used for the voltage dividers) Optional: selectable voltage range: 5V, 6.6V, 10V, 20VYou'll need: An Arduino Leonardo or Arduino Micro2 crocodile clamps a 0.1µF capacitor (optional) a 5.1V zener diode (optional) a pc wi...

Class B audio amplifier - 2500W

Class B audio amplifier - 2500W

ARDUINO SOLAR CHARGE CONTROLLER (Version-1): 11 Steps (with Pictures)

ARDUINO SOLAR CHARGE CONTROLLER (Version-1): 11 Steps (with Pictures)

This project, builds on Wunderground weather forecast via the Internet. Specs:1. 3 days weather forecast (Low&High temps, probably of precipitation, condition icons)2. Current weather conditions (Current temp, feelslike temp, humidity, pressure)3. Current wind directions & speed with analog gauge meter.4. Indoor temperature with Dallas 18b20 Temperature sensor.5. NTP time via Wunderground time server.

This project, builds on Wunderground weather forecast via the Internet. Specs:1. 3 days weather forecast (Low&High temps, probably of precipitation, condition icons)2. Current weather conditions (Current temp, feelslike temp, humidity, pressure)3. Current wind directions & speed with analog gauge meter.4. Indoor temperature with Dallas 18b20 Temperature sensor.5. NTP time via Wunderground time server.

Since writing up instructions on how to build a simple Arduino home energy meter which measured the energy consumption for a single phase, I’ve had a number of people ask about modifying it to be a 3 phase energy meter. While there is a range of commercially available single phase energy meters available, the 3 phase meters aren’t nearly as common and tend to be quite expensive. So I decided to take the time to build a 3 phase energy meter and fix up a couple of areas in t...

Since writing up instructions on how to build a simple Arduino home energy meter which measured the energy consumption for a single phase, I’ve had a number of people ask about modifying it to be a 3 phase energy meter. While there is a range of commercially available single phase energy meters available, the 3 phase meters aren’t nearly as common and tend to be quite expensive. So I decided to take the time to build a 3 phase energy meter and fix up a couple of areas in t...

PiStation, a Raspberry Pi Playstation

PiStation, a Raspberry Pi Playstation

f31aa972d03b700d7d345deb39a012a7.jpg 640 × 960 pixlar

f31aa972d03b700d7d345deb39a012a7.jpg 640 × 960 pixlar

38mm x 38mm Laser Engraver build using CD-ROM/Writer on ATmega328p

38mm x 38mm Laser Engraver build using CD-ROM/Writer on ATmega328p

Totrod Tot Rod Chassis Gokart Go Kart Buggy Petrol Car |

Totrod Tot Rod Chassis Gokart Go Kart Buggy Petrol Car |