Turn-key PCB assembly services in prototype quantities or low-volume to mid-volume production runs

Arduino based high altitude balloon tracker

High altitude ballooning is very exiting because you can gather really interesting data and images. Bu in order to make this flight successful you need not only a balloon, but also tracking device as well. Because balloon once fired, it can travel hundreds of kilometers until it reaches high altitudes and then explode. So you need to gear it up with find it when it falls down. Ugifer build his high altitude balloon tracker with Arduino core. Obviously to locate balloon coordinates there is a GPS module used. Then comes a row of sensors including couple DS1820 temperature sensors, absolute pressure sensor. Data then is logged to SD card for later review. And finally Radiometrix NTX2 radio module for relatively long range data transfer which transmits balloon coordinates. The balloon traveled 38km up which is decent height but still not close to other records that reach 100km. Anyway this is more than enough to get exiting results. Continue reading

Custom Wireless RC Remote Control

This project is something which I have made it myself but a very basic version. This is so-advanced.  Everyone have seen or even played with the XBOX controller or a PS3 controller. This is something similar but has wireless capability and is mainly used to control Robots and Quadcopters and with a little tweaks, you might be able to use it on your PC too. The project has been called this project “Omote” – Oscar’s Remote controller. There might be quite a lot of existing commercial controllers like RC transmitters, but they tend to be very expensive and probably not optimized to this project. For the Wireless communication Modules, a  Ciesco XRF has been used because they are so much cheaper than the XBee. For the controller, they picked up an Arduino Mega. The Mega provided more enough Analogue and Digital pins, which the UNO failed to provide. Software for this project consists two parts, one for the remote controller (which I call “Host” later on), and the other for the robot (“Client”). There will also be a LCD menu… Continue reading

Making Arduino wireless

Probably you already have few cheap RF transmitter and receiver modules around. If not you can grab them at Sparkfun for really cheap. So one thing is great they are cheap, but these are only one way 315MHz modules, so signal can be transmitted one way – ideal solution for some kind monitoring like weather stations and so on. These modules are capable to transmit data at up to 2400bps rate to a max of 500 feet distance. So here it is a simple set up of two Arduino boards – one with receiver and another with transmitter module. As these modules don’t include any transmitting protocol, it has to be programmed within microcontroller. Transmitting protocol basically consists of two byte starter packet with helps to prevent random noise, then follows address byte that allows addressing multiple transmitters, 2 bytes of data, and last portion is a check sum – to make sure packet isn’t broken. So this is a quick example for your next project if you decide to use these modules. Continue reading