LED UV exposure box

Introduction I have been using the toner transfer method for about 9 years with great results. Occasionally I would need a board with finer traces and I would use UV method. My exposure setup allowed only a single sided board to be made and it was composed of a 30cm UV tube, some holders, a table, board and film. Exposure time was rather long as the tube was far away from the board. A few months ago I was l ...

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OSCCAL Value Finder

Introduction When working with microcontrollers that require a factory calibrated osccal value stored in memory, it’s very normal that once in a while this setting could be lost during an upload of a new program or when accidentally erasing the device. I’m no exception and erased many times this value by mistake in several devices. Once this value is erased, it’s not possible to recover it unless it was wri ...

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USB Low Pin Kit

Introduction USB is very common interface today. If you look around, many of devices today comes with a USB port. Computers, printers, routers, usb keys, etc. All this devices have a USB controller inside. These devices can be divided in two groups: USB Host (like a computer, routers, modern LCD TV’s); USB Device (like flash drive, mouse, keyboard); Most of hobby electronic projects still are in RS232 seria ...

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PIC based WWVB clock

Introduction There are many DIY versions of WWVB clock designs available on the web. Commercial “atomic” clocks are inexpensive and widely available, but I wanted to try my hand at designing one to gain insight into WWVB reception and to learn a little about programming a PIC microcontroller. My version is not the simplest available, but it works well and I think it offers a few unique features. WWVB Clock ...

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89Sxx Development Board

Introduction There are some 89Sxx development board, here is another one. I have designed this single side development board to be used as a tool for learning MCS-51 Microcontrollers, and for easy microcontroller project development. The 89Sxx development board features : 89Sxx 40-DIL based design, 89S51/52/53 In System Programming (ISP) through the 6-pin header RS-232 and RS-485 serial port (shared pin) fo ...

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MCU controlled Bluetooth automation with infrared sensor

The microcontroller used is 0822 zilog encore! 8k series (soic,28pin) as shown on the figure. Is a programmable microcontroller, the functions used are the GPIO and the UART of the chip. GPIO is used on led indicators, and the UART is used for giving and reading AT COMMANDS to control the Bluetooth device. [caption id="attachment_12686" align="aligncenter" width="640"] Controller board (1st board)[/caption] ...

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Prototype Your PCB On EasyEDA

After you finished your PCB design, you can directly order PCB from EasyEDA. EasyEDA provides fast and cheap prototyping service. They provide online instant quote, fast fabrication and competitive price, which saves a lot of time and money for customers.           PCB:       2-Layer  5cm×5cm  Max                          PCB:     2-Layer  10cm×10cm  Max Quantity: 10 pcs             ...

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Environmental Monitoring with TPS, Azure, and PowerBI

About this project Сollect environmental data with Tibbo Project System devices, process it with Azure Stream Analytics and visualize using Power BI. Things used in this project Hardware components: Tibbo Technology Size 3 Linux Tibbo Project PCB × 1 Tibbo Technology Tibbit #00-3 (Two direct I/O lines, +5V power, ground) × 3 Tibbo Technology Tibbit #18 (Power input) Optional. Instead, direct 5V on-board pow ...

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Battery-charging considerations for low-power applications

By Tahar Allag Systems Engineer, Switching Charger Solutions, Battery Charging Products Introduction The wearable and personal-electronics industries are booming. Devices in this market vary wildly by application and use. These multifunction devices are designed to help people in their daily activities and make their lives comfortable. They can be found in different shapes, colors, sizes, and safety measure ...

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chipKIT Tutorial 7: Using Nokia 5110 LCD

In Tutorial 4, we learnt interfacing an HD44780-based LCD to a chipKIT board for displaying alphanumeric output. Today, we will see how to connect a NOKIA 5110 graphical LCD (used in Nokia 5110 cell phones), which is a 84×48 pixel monochrome display of about 1.5″ diagonal in size. The display can be used for graphics, text, and bitmaps. [caption id="attachment_12138" align="alignnone" width="580"] chipKIT N ...

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