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Homebuilt Rovs. I have completed the first pressure test....... I began the pressure test by slowly increasing the water pressure while watching for any signs of leaks, I was able to reach my maximum water pressure of 95 psi (which simulates a depth of around 200') without either of the seals showing any signs of leaks. The only leak a had was from the actual wires, and this was through the jacket of the wires and not the rubber exit seal. I could however get the rubber wire exit seal to leak a little (and by little I mean a small trickle) if I pulled the wires sharply to the side, which would be expected because I was creating a void in the seal.

Keep in mind that this was the back side (dry end) of the seal though and that shouldn't happen on wet side of the seal because that side does have some flexibility to it. I let everything sit under pressure for about 10 minutes and then I proceeded to hooked up the pump to the battery. I came back and hour later and still no leaks. Home built underwater robot ROV in action! Arduino/Android/AudioTerminal at master · webos21/arduino.

The World Famous Index of Arduino & Freeduino Knowledge. Freeboard [MeshCMS] FreeBoard is a new way to provide navigation instruments on your boat. Its released as an open source project (GPL). Its in an early but useable stage, and developing fast. Code is on , NEW: protoype interface board arrives This is the 'floating' view. Goals minimal costmaximum interoperabilitysupport wind, log, autopilot, charts, and other common uses.use low cost commodity hardwaresupport modern devices (PC, tablets, cellphones)support for many simultaneous userstotal system cost (less clients) <USD500use common KAP/BSB or ENC map formats (US NOAA Raster charts work) See OpenSeaMap.org Thats achieved in a totally unique way, by providing the instruments and chartplotter via a web page over a local wifi link on your boat, so that any device with a web browser can access them.

Capabilities Like a PC, Freeboard can do many different things for different needs. Multiplex NMEA, convert Seatalk to NMEA and vice versaBroadcast NMEA over Wifi. Details. Water Tank Depth Sensor. Water is a precious resource in many parts of the world, and many people rely on water tanks to supplement their water supply by storing collected rainwater or water pumped from a well or bore.

But how do you measure how full a tank is? Tanks are constructed of opaque material to prevent algae growth and often kept closed up to prevent mosquito infestation or access by small rodents so it's inconvenient to physically look inside. And besides, having a way to measure tank depth electronically opens up a world of possibilities such as automatic control of pumps to top up tanks when they get low or to disable irrigation systems when not enough water is available.

The obvious way to measure tank depth is by placing a series of conductive pickups at various heights inside the tank and measure the resistance between them. This project works a little differently. The Arduino then reads the output of the transducer and reports the depth of the tank. Water Tank Depth Sensor Schematic Source Code. Top 40 Arduino Projects of the Web. Arduino Powered Remote Control Lawnmower. We’ve seen loads of great Arduino projects and even a few RC lawn mowers, but we’ve never seen the two combined until now. Â This project walks you through the entire build process step by step and includes a thorough guide for creating remote control robotics. You can read the entire build tutorial to perhaps create your own robotic servant. Â Now all you need is a hammock to relax in while your new robot mows the grass for you Automate your Chores: How to build a 5$ Arduino (clone) | Hardware Startup.

If you are like me and build projects with Arduino, you must have felt the frustration with ripping your project apart, because you wanted to build something else with that Arduino. I have had the same issue many times, so I decided to find a way to solve this once and for all. Hence, how to build an Arduino clone for less than 5$. Warning: Now before we continue a warning. This post explains how to build Arduino cones for less than 5$, but it will mean that you either get creative with you current Arduino to program the Arduino bootloader, or you invest a bit in a standalone ISP programmer and a FTDI interface board (total about 20$ one time investment). The reason we can build a relative cheap Arduino clone is that Arduino consists of the following parts: - USB to serial converter (also known as FTDI) - ATMEGA328p with oscillator and bootloader - 5V power circuit - Bunch of headers So where do I get these cheap ATMEGAs?

Like this: Like Loading... Interfacing a sensor with an Arduino. The world of hobby electronics is one that has seen explosive growth and massive changes over the past few years. The biggest changes have come from the level of computing hardware that is available to the hobbyist. From very simple microcontrollers to full PCs on a USB stick, all sorts of options are available. One of the more popular options is the Arduino, which falls between these two extremes. The entire Arduino project has been a proof of the power of open source.

All of the hardware designs are open source, meaning anyone can take them and manufacture Arduinos. So you can pick one up with various capabilities. In this tutorial, you will get a development environment set up to work with your Arduino. Resources ArduinoArduino Playground Step by Step Step 01 Get your hardware The first step is to select your hardware. Step 02 Plugging in Most Arduino boards interface over USB with the development computer. Step 03 Software Installing the required software has gotten much easier recently. 11 Arduino projects that require major hacking skills—or a bit of insanity. Raspberry Pi has received the lion's share of attention devoted to cheap, single-board computers in the past year. But long before the Pi was a gleam in its creators' eyes, there was the Arduino. Unveiled in 2005, Arduino boards don't have the CPU horsepower of a Raspberry Pi.

They don't run a full PC operating system either. Arduino isn't obsolete, though—in fact, its plethora of connectivity options makes it the better choice for many electronics projects. While the Pi has 26 GPIO (general purpose input/output) pins that can be programmed to do various tasks, the Arduino DUE (the latest Arduino released in October 2012) has 54 digital I/O pins, 12 analog input pins, and two analog output pins. Among those 54 digital I/O pins, 12 provide pulse-width modulation (PWM) output. Pulse-width modulation, for example, is important for driving motors in particular directions and telling them how fast to go, Kridner recently explained to Ars. Dublon spent a year testing Tongueduino on himself. Open Source Hardware Files. Freeduino is a collaborative open-source project to replicate and publish Arduino-compatible hardware files. The Freeduino Eagle SCH, BRD and Gerber production files allow users to create boards that are 100% functionally, electrically and physically compatible with Arduino hardware.

While Arduino is a protected trademark, Freeduino comes with a free and unrestricted license to use the Freeduino name, available for any use. This means you can do whatever you want with these files. The idea here is to make available the Eagle files you would need to make your own Freeduino variant board. Freeduino currently consists of a Diecimilia-equivalent schematic and 0603, 0805, 1206 and through-hole routed board files. In addidtion, we have begun posting files derived from by others from the first Freeduino files (yes, Arduino>Freeduino>others!).

Original Freeduino Files: Freeduino 0603 SMT prototype. Freeduino Serial (by NKC Electronics) Files: Freeduino MaxSerial Files: