Ronald Willem Besinga writes:
One of the basic usage of the TIMER peripheral on every microcontroller is to provide the accurate timing mechanism. Using the TIMER peripheral as the basic timing, we could easily develop a stopwatch and display it to the 8-Digit seven segment numeric LED display. Thanks to the Maxim MAX7219 chip which enable us to interface this 8-Digit seven segment LED display much easier using just three wires of the SPI (serial peripheral interface) to display the hour, minute, second, and hundredth of seconds to the 8-Digit seven segments LED display.
Build your own stopwatch using Maxim MAX7219 Serially Interfaced, 8-Digit LED Display Drivers - [Link]
This is a TV transmitter to generate a stream containing four TV programs and broadcasts it on a frequency in the DTT standard.
Ideal for stacking in an antenna system, audiovisual channels generated on-site or from other sources like a decoder for satellite television.
With this project you can make a small local TV station that has up to four TV channels. You can also integrate into a system into other existing TV signals that will be transmited on a desired RF channel. It’s ideal for exclusive cable installations for a condominium, a hotel, company premises or public place.
This merges 1 to 4 television channels in one stream of output that is ready to be transmitted on air (with the help of a linear RF) or injected in a localized cable TV circuit.
Using DTT to create your own TV transmitter - [Link]
This is a simple project of Android Bluetooth Car with Bluetooth control. This project is open source and multiplatform: Arduino (Processing), STM32, MSP430, PIC, AVR, FEZ Panda II (.NET Micro Framework) and may be even В Raspberry Pi.
To control the car used Android-device with a built-in accelerometer. Tilt forward – car goes forward, tilt to the left – car turns to the left, tilt back – car goes back. Speed of movement or rotation depends on how much you tilt the device. Sensitivity and value of the tilt set in the configuration Android-apps. Also are provided a normal way to control: the buttons on the screen. In addition to all I implemented the touch control. Total 3 ways to control the RC Car.
Simple RC car for beginners (Android control via Bluetooth) - [Link]
The MAX44281 is the industry’s first op amp in a 4-bump WLP package, designed for use in portable consumer and medical applications. This device is offered as a noninverting amplifier with gain (AV) of +1V/V, +2V/V, or +10V/V. The device features rail-to-rail output, low 100µV input voltage offset, and 15MHz of bandwidth with only 700µA of supply current. The device is available in an ultra-small, 0.86mm x 0.86mm, 4-bump WLP package with 0.5mm height.
MAX44281 – Ultra-Small, Ultra-Thin, 4-Bump Op Amp - [Link]
A logic analyzer is a powerful debugging tool for capturing many digital signals at once and analyzing their timing relationships. Raj from Embedded Lab has posted a new tutorial that provides a quick overview of a logic analyzer tool and its uses in troubleshooting problems arising from timing violations and transients on microcontroller buses. He used the SCANALOGIC-2 educational kit from IKALOGIC to illustrate the concept of logic analyzer.
Learning Logic analyzer basics using SCANALOGIC-2 educational kit – [Link]
APC 8750 is a mini PC runs a custom Android system, built for keyboard and mouse input. A basic selection of applications is preinstalled. Also included is a full set of consumer I/O ports, enabling APC to connect to your PC monitor or TV.
Powered by a VIA WonderMedia ARM processor, Android PC system (APC) integrates memory, storage, and a full set of consumer I/O features in a small footprint Neo-ITX motherboard. The system also features a custom build of Android that has been optimized for keyboard and mouse input, and comes with a browser and a selection of preinstalled apps.
- Optimized Android OS
- HD TV support
- Hardware acceleration of the most demanding video formats
- VIA WonderMedia ARM 11 SoC
- 2 GB NAND Flash Memory
- 512 MB DDR3 SDRAM Memory
- VGA and HMDI display ports
- Four USB 2.0 ports
- One microSD slot
- One 10/100 Ethernet port
- Audio-out/ Mic-in
- 9 VDC power socket (2.5 mm, centre pin positive)
- Neo-ITX form factor (170 x 85 mm)
Internet PC for €52 - [Link]
Most commercial LED flashlights use three AAA or AA batteries in series that produce 4.5V. The batteries then drive four white LEDs that connect in parallel. These LEDs can work at voltages as low as 2.7V and, in some cases, 2.4V. At those voltages, the LEDs become dim, and you must frequently change the batteries. Thus, the lowest working voltage in this case is approximately 0.8 to 0.9V per battery.
When a 1.5V alkaline battery discharges to 0.9V, it still has more than 10% of its original energy left. If you replace or discard the battery, you waste that energy.
LED-flashlight circuit works at voltages as low as 0.5V - [Link]
Heat and arcing won´t represent a threat to your health. Dust-off sprays will displace dust simply and efficiently even in harsh environment and from hard-to-reach places.
Who wouldn´t like to have an allround reliable helper – a helper with a long hold-off, which won´t lose his breath after a short work?
Dust off containing a pressurized non-flammable gas is designed for an efficient displacement of dust from electronics, optics, mechanics and other industrial devices. Appropriate air flow and a nozzle ensure an effective and economical dosage. Dust-off series sprays from company Kontakt-Chemie belong to the top-selling products from this producer.
The spray can be used with or without an extension tube, convenient mainly for hard-to-reach places. Dust-off is available in 200ml and also in the 400ml package usable in a vertical position. A special version is the Dust-off 360 usable even in the upside-down position. Because laws of physics are also valid for sprays, after a longer usage at once, the can cools down and the inner pressure decreases. In such case, it is only necessary to wait for a while in order to allow the can to warm-up from surrounding environment. The advantage of a pressurized air in comparison to other cleaning methods is, that it is possible to direct it accurately only on desired places (what increases efficiency of cleaning) and also, that it doesn´t leave any residues, thus usable on virtually any components.
Blow the dust away safely with the Dust off spray - [Link]
Pittsford, NY, USA: Saelig Company, Inc. (www.saelig.com) has introduced the ABI BoardMaster 8000 PLUS –a unique, versatile, self-contained, and easy-to-use PCB test system. The BoardMaster 8000 Plus is a comprehensive set of test instruments, complete with built-in PC, for testing and fault-finding on almost any kind of PCB. Incorporating a full range of test instruments in one compact box and offering a variety of available test methods, the BoardMaster 8000 PLUS provides a cost-effective standalone solution for electronics faultfinding across a wide range of industries.
BoardMaster 8000 PLUS is an integrated package of high specification instrumentation controlled by sophisticated but easy to use software. The hardware is installed in a rugged transportable case that also contains a high-specification, Windows™ PC. The BoardMaster 8000 PLUS is based on a modular system which can be customized for specific applications, and its software can be configured to guide users step-by-step through a test procedure, with custom-annotated picture images, instructions, and attached datasheets to give quick Pass/Fail results. This is much faster and more economical than using traditional oscilloscope and metering and other bench test methods. Read the rest of this entry »
Functionality, Innovation and Style, are the benchmarks of the new device series
Miami, Florida, January 22 2013 – T&M Atlantic today announced that There is a new addition to AKTAKOMs handheld oscilloscopes-DMMs, a new device series dual channel models ADS-4062 and ADS-4102 with a bandwidth of 60 MHz and 100 MHz respectively. AKTAKOM new digital oscilloscopes-multimeters have maximum real time sampling rate of 1 GSa/s (500 mSa/s per channel) and the deepest Functionality of these new devices is on the same level as benchtop oscilloscopes and in features technology that is inherent in digital oscilloscopes of world-known brands. Similarly to AKTAKOM ADS-2022, ADS-2042M, ADS-2062, ADS-2062M, ADS-2072, ADS-2072M, ADS-2102, ADS-2102M, ADS-2152, ADS-2152M, ADS-2202 benchtop oscilloscopes ADS-4062 and ADS-4102 models have wider synchronization capabilities. They include: edge trigger, video signal trigger, pulse width trigger, slope trigger, as well as alternative trigger to watch nonsynchronous signals. Read the rest of this entry »