Notes from the bench.
Short write ups on circuits, measurement, firmware tools and the things we learn along the way.
9 notes
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Embedded vision for IoT products
UVC or MIPI CSI? What each camera interface costs you in hardware, drivers and development time, and what we learned building camera products on Linux.
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OpenEarable, an open source earpiece platform
A modular earable built on the Arduino Nano 33 BLE Sense, released under the MIT licence, and a useful starting point for custom designs.
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What is a transimpedance amplifier?
A TIA turns the tiny current from an optical sensor into a voltage an embedded system can measure. The parameters that matter, and why simulation comes first.
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TI's MSPM0, Cortex M0+ microcontrollers with analog built in
Texas Instruments entered the Cortex M0+ market with the MSPM0 family. Where integrated op amps and ADCs can replace parts on a sensor board, where they cannot, and how we evaluate a new MCU family.
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Raspberry Pi, SOM or chip down? Choosing a compute platform for a product
A Raspberry Pi is a great way to start, but not always the right thing to ship. How we choose between single board computers, system on modules and a chip down design.
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Creating an LTspice model from a PSpice or TINA-TI model
A step by step guide to importing manufacturer models into LTspice, and making the result portable so you can share a simulation.
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A new chapter
For our sixth anniversary we designed and trademarked a new logo, a tree of growth and a door of golden opportunity.
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Zero voltage switching for inductive heating
Measuring a ZVS induction heater with a client's custom coil, from resonant frequency to gate waveforms and heat.
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IDEs for firmware development
We write firmware for many microcontroller families to stay resilient to supply shortages. The IDEs we use, Arduino IDE 2.0, and what we recommend.