In the usual Kuzyatech fashion, when something breaks, we must take it apart. Today, one of the ”early adopter” GU10 style LED lamps decided to fail mechanically: The power supply is wrapped in some tape. But that does not preclude a bunch of exposed mains line points from being visible All part numbers sanded off. […]
No-name GU10 LED lamp teardown Read More »
I’m a programmer/systems architect by education and by the way of winning bread, but somehow I got infected with the electronics bug 3 years ago – had a sidejob to upgrade the firmware of a LED display, got into microcontrollers, then made myself comfortable in analog. Dave Jones has been saying in his videos –
Chirp! – the plant watering alarm Read More »
I bought an antique telegraph sounder a while back, and I’ve been working on a project that will click out emails from my Etsy store when I get an order. I’ve gone through several generations, and come up with something I really like. What follows is a description of my process for going from concept
Concept to Finished Piece – Generations of an Electronics Project Read More »
In today’s wireless, connected world, ambient Radio Frequency (RF) energy is everywhere. Technically, this free-flowing energy can be captured, converted and stored for use in other applications. In fact, it is already in use in a number of ultra-low-power, battery-free applications, such as RFID tags, contactless smart cards, and wireless sensor networks. As a result
Tune In, Charge Up: RF Energy Harvesting Shows its Potential Read More »
Description Create a design and simulate using EE-Sim: [MAX15050][MAX15051] The MAX15050/MAX15051 high-efficiency switching regulators deliver up to 4A load current at output voltages from 0.6V to (0.9 x VIN). The devices operate from 2.9V to 5.5V, making them ideal for on-board point-of-load and postregulation applications. Total output-voltage accuracy is within ±1% over load, line, and
MAX15050 – Design a small, efficient 4A step-down converter Read More »
Cheap low-speed dual channel PC/USB oscilloscope and arbitrary waveform generator with STM32F3 microcontroller. Miniscope v2d is based on STM32F303CBT6 microcontroller – LQFP48 device from STM32F3 family featuring: 32 kB RAM on data bus 8 kB RAM on instruction bus 128 kB FLASH memory USB device (full speed) 4 fast and flexible ADCs 12-bit DAC with
With LEDs that require only one pin, you can do a lot with even just a 6-pin microcontroller! A touch controlled light with 4xWS2812 RGB LEDs and ATtiny10. This is a small hardware project which utilizes the light_WS2812 library and the TinyTouchLib to implement a touch-button controlled RGB-LED light. Only two output pins of the
As a result of visiting Hamfest, I ended up with a laptop to take apart – a fairly new Toshiba Satellite C675D with a broken screen. It’s not a Hamfest if you don’t bring home something to take apart of course! Today we’ll be testing the battery it came with to see if it’s salvageable.The
Testing laptop battery: pinout, SMBus, charge capacity Read More »
Integrated circuit FT232R is becoming legendary and we bring you another example of FTDI USB chips usage. In praxis we often face a requirement to communicate with devices, which have serial ports RS232, RS422 and RS485. As many devices – mainly notebooks, already usually don´t have these ports, it is necessary to use a converter
Customer solution: Trouble-free RS232, RS422, RS485 to USB conversion Read More »
In my last projects, I always use the same CPU. DSETA board, I say in the posts. Well, here it is, a CPU based on the AT89C51RE2 microcontroller from Atmel. I develop this board for some reasons. The first and main one is because I want to have a small board with a great (an
DSETA board, a CPU based on the Atmel AT89C51RE2 Read More »
