News & Updates

LTC4125 – 5W AutoResonant Wireless Power Transmitter

Monolithic 5W Wireless Power Transmitter AutoResonantTM Switching Frequency Adjusts to Resonant Capacitance and Transmit Coil Inductance* Transmit Power Automatically Adjusts to Receiver Load* Input Voltage Range: 3V to 5.5V Integrated 100mΩ Full Bridge Switches Multiple Foreign Object Detection Methods Programmable Average Input Current Limit and Monitor NTC Input for System/Component Temperature Qualified Power Transfer Wide Operating Switching Frequency Range: 50kHz […]

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Open-source ELM327 OBD adapter

The adapter allows you to interface with your car’s OBD-II bus. It provides you a serial interface using the ELM327 command set and supports all OBD-II standards: SAE J1850 PWM SAE J1850 VPW ISO 9141-2 ISO 14230-4 ISO 15765-4 CAN Hardware The adapter kit schematic is shown here. It is built around NXP LPC1517 Cortex-M3

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16F628A Microcontroller development board

Description This project is a versatile, configurable, and cost effective development board available for the 16F628A or other 18 PIN Microcontroller from Microchip. The board has simplest form with all the Port pins terminating in a Relimate connector (Header Connector) for easy connection to the outside world. Some of the key benefits of this Development

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Circuit lets you test capacitors

Electrolytic capacitors tend to leak with time. The circuit in Figure 1 lets you test capacitors and decide whether they’re worth using. You can set the constraint on the leakiness through the values of CREF/RREF. The values in the figure are typical for general testing of all capacitors, from 1-nF ceramic versions to 1000-μF electrolytic

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DIY automation of your existing window blinds. Works with a Z-Wave controller.

You wake up in a dark room and have to use an artificial light before letting the sun in by opening the blinds in the bedroom. You come home from work to a hot house because the sun was warming it all day. Now, you have to adjust the thermostat to cool it down. You

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We are happy to share our FREE and OPEN-SOURCE microprocessor system PULPino!

What you will get is a competitive, state-of-the-art 32-bit processor based on the RISC-V architecture, with a rich set of peripherals, and full debug support. At ETH Zurich and Università di Bologna we have put many of the ideas that we have developed through our research on ultra-low-power parallel processing (PULP project) into PULPino. It

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Creating an OTP fob compatible with Google Authenticator using an Espruino Pico

This code is basically just from three sources, merged together with a few tiny tweaks by me. jsSHA, a JavaScript implementation of SHA/HMAC Generate Time-Based One-Time Passwords With JavaScript Espruino HID Example (Note I’ve just discovered that Espruino has its own hmac implementation so I can possibly drop jsSHA) The main thing you need for

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Solar Tracker in the Internet Cloud

This is a Solar Tracker. A full size, internet cloud connected, smartphone accessible Solar Tracker built mainly from 2x4s and plywood, employing wooden peg gears, recycled curtain poles, nuts, bolts and threaded rod. The solar tracker uses a home built electronic controller incorporating WiFi, stepper motor drives, accelerometer and magnetometer. The tracker was designed to

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Lasers built on silicon are a step towards fully integrated photonics

It has long been predicted that inter-chip and even intra-chip data links must ultimately move from the electrical to the optical domain. Prior work in the field has typically involved lasing light sources being fabricated separately from, and tightly coupled to, a host IC. A group of researchers from the UK has demonstrated the first

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Gamma-photon radiation detector

Abstract: A PIN photodiode, four low-noise op amps and a comparator are used to detect individual photons of gamma radiation. The schematic, design considerations and component selection are discussed. The circuit of Figure 1 includes a PIN photodiode that detects individual photons of gamma radiation. When a photon strikes a depletion region created by reverse bias

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