Tiny robots with vibration motors

If you would like to start building robots, then you probably should start with small ones. This way you will get results faster and much cheaper. As a starting point, it is always best to start with line followers. Once you get it right, then you can move to more complex robots. But it seems that with a small line following robots fun never ends. Roborizeh has been testing really small (~1.5cm) size robots that are driven with vibrator motors – the same as used in cell phones. When robots get smaller, casual driving systems may be challenging and sometimes inefficient. Small test robot is clocked with AVR Attiny45 microcontroller which has an IR sensor to detect line. Two cell phone motors moves robot forward. There is a needle attached to motors that makes it possible to move. The robot is powered by a 3.7V Li-Pol battery. Motors are driven directly by microcontroller, as they don’t require high current or vibration monitoring. I think this is really cheap and fun solution for anyone interested in robotics. Continue reading

A Small Duino

The title might sound a little strange at first go but believe me it’s worth reading or at least giving it a try. Majority of the people, mainly the hobbyist or electronic freaks, tend to use ARDUINO as their main developing environment for most of their project. The reason behind this is it’s actually low-cost, it save times as you can prototype you project faster and more importantly it’s easy to learn keeping in mind the fact the support which is available behind it. However there are situations every now and then, where you need an extra arduino or maybe the main arduino requires a small number of pins. Then Bare-Duino is the solution for your problem. The board features a ATtiny 45 or 85 on board along with an ISP programmer for easy programing with LED as well as battery connections. ISP programmer was included as previously people at MIT tech labs, develop a low cost ATTiny45 based arduino, which can be used for low pin requirements project, however it has to be programmed using an ARDUINO IDE. The… Continue reading

Atmega32 based telephony platform

If you have a land-line telephone at home probably it already has lots of features like answering machine, phone number identification, recorder. I bet it can’t do that much as this DIY device does. This telephony platform has lots of features including: • Works both as a standalone device or in conjunction with a PC • Records up to 230 calls or 17 hours of audio with a 512MB MMC/SD card • DTMF detection for European-style incoming caller ID and outgoing number detection • Allows listening to calls in real time or replaying them later • Allows simultaneous record and playback • Transmits audio over the serial port either in real time or replaying from the memory ca • LCD for call progress monitoring and timing • Optional “mini-UPS” battery backup allows operation even in case of power failures Device is built around Atmega32 microcontroller and smaller ATTiny45 which is responsible for battery voltage and AAA NiMH charging. Device is controlled by 5 push buttons while viewing actions in simple 2×16 LCD. Great project to make your home more hacked.… Continue reading

The Smart AVR Light Controller for LiPo-Powered Halogen Bike Lights!

Sometimes, there are many electronic gadgets you don’t need to buy, but you can have it with a little bit of effort! Let’s take an example, everyone is familiar with the bike lights. Well, you might think that the super-bright LEDs are good enough compare to halogen lights, since they are more energy-efficient and require smaller batteries, but the halogen lights are cheaper and easier to build than super-bright LEDs! Try to imagine the super-bright LEDs bike light didn’t work properly, and its lead-acid battery is totally a mess, you’ll definitely have the reason to change it to LiPo-powered halogen bike lights. There is major problem here you need to solve up. For your information, a two-cell LiPo battery can provide about 8.5V when they’re fully charged. However, most of the halogen lights are commonly designed for 6V or 12V, where the light power is controlled by the provided voltage level. Since an 8.5V voltage level can destroy a 6V halogen light, thus you’ll need a power controller to keep the voltage supply constant for the halogen light. For this… Continue reading