The RFID (Radio frequency identification) technology steps-up in the modern age in the field of access system, identification, protection system and so many places. In this project, we are using this as an door opening as well as door closing system based on the RFID card number identification. This antitheft project is built to secure […]
RFID Based Door Opening System Read More »
I always like a challenge, so when I saw [simpleavr]s vusbtiny programmer, I started to wonder how small I could make an AVR programmer. All in all I’m pretty pleased with the result. The schematic is almost the same as the original one. I only added a LED an resistor to indicate a proper power
Minimalist AVR programmer Read More »
The last step in my PCB design process normally is the silkscreen. When I try to design a nice helpful silkscreen, I often find my self wondering “How small can I make the text?” or “If I put this text over a via, will it still be readable?”. Usually I end up digging around some
Simple silkscreen reference board Read More »
INTRODUCTION Using a solar panel or an array of panels without a controller that can perform Maximum Power Point Tracking (MPPT) will often result in wasted power,which ultimately results in the need to install more panels for the same power requirement. For smaller/cheaper devices that have the battery connected directly to the panel, this will
Practical Guide to Implementing Solar Panel MPPT Algorithms Read More »
This is a Nordic Semiconductor system on chip with a 2.4 GHz radio and a Cortex-M0 processor. The hardware Bluetooth baseband provides raw BLE packets in a frame buffer. Nordic provides the S110 softdevice which implements a Bluetooth Low Energy stack. It also supports the proprietary protocol spoken by nRF24L01+ and nRF24LE1. Getting started Nordic
HackManhattan’s Nordic nRF51822 breakout board Read More »
Compact embedded module WizFi630 enables to connect any serial RS232 device to a TCP/IP network. However it´s not all. By supporting 3 Ethernet ports, it offers a wide variability to connect another devices to a Wi-Fi network, in various operation modes. Novelty from company Wiznet WizFi630 module provides, besides the RS232/ Wi-Fi interface, even many
WizFi630 – the immediately available WiFi Read More »
A switching regulator coupled with an LDO in the same package is a very versatile component. Touchstone, with its first analog power management product, has enhanced such a function with the capability to use supply voltages down to 0.6V while still being able to deliver a 75 mA output current. The device can be used in
Touchstone Semiconductor TS3300 ultra low-power, load independent, high-efficiency boost Read More »
LED matrix displays provide flexibility to display text, graphics, animations, and video, and therefore, they have become a popular mean of displaying information these days. You can see them at gas stations displaying the gas prices, or in the public places displaying information, and alongside highways displaying advertisements on large dot matrix panels. This project
Making a 8×40 LED matrix marquee using shift registers Read More »
Input Voltage: 24 V (18 – 36V) Output Voltage: 12V Regulated (+/-3% over line / load / temp.) Output Power: 4.2 A / 50 W Output Efficiency: Up to 88% Input-to-Output Isolation: 2250 V Output Voltage Trim: Vout +10/-20% Dimensions: 0.87” (l) x 0.65” (w) x 0.265” (h) 22 mm (l) x 16.5 mm (w)
Cool-Power® DC-DC Converter – PI3106-01-HVIZ Read More »
Multi-band antenna 2J301 offers several properties for which it´s worth to consider its usage in your devices. Decent gain, good VSWR values, small dimensions, resistance to outdoor conditions and a simple mount method are probably basic features, which we´d expect from external antennas for the GSM/UMTS, PCS bands. Antenna 2J301M/SMA from company 2J provides all
High-quality GSM/3G signal directly to your device Read More »
