John Gallant
  • Member for 11 years, 2 months
  • Last seen more than 7 years ago
Best One-Off DIY PCB Creation Technique
Accepted answer
76 votes

For one-offs or prototypes I use: Press-n-Peel transfer film with a laser printer (the blue one) Steel wool and detergent to clean the PCB blank, then a short etch in ammonium persulphate: that gives ...

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How to go from newbie to manufactured?
12 votes

I've gone down this route over the past few years and am now selling small quantities of my designs. I chose Microchip microcontrollers early on and have stuck with them, but Arduinos and the AVR ...

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What is causing large oscillations in my DC/DC boost converter? Is this ground bounce or some other effect?
6 votes

I would first check that the problem you are chasing really exists and is not an artefact from poor grounding of the oscilloscope. I have spent quite a few hours chasing down noise on power supply ...

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Control a bicolor LED with just one pin
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6 votes

You can do this with a bi-color LED that has the two LEDs back-to-back if you connect one LED terminal to an intermediate voltage eg 2.5V on a 5V design and connect the other side to the MCU via a ...

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Connecting piezo buzzer with BJT
3 votes

I think this is because a piezo device is essentially like a capacitor. The output of your microcontroller both charges and discharges the capacitor because it actively drives its output both high and ...

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Any tips on using the Invensense ITG-3200 gyro?
Accepted answer
2 votes

So for the sake of closure, my own answer is: Vlogic needs to be 1.8V or less, in spite of what the specifications say. Maybe its just me, these things are supposed to work with any Vlogic between ...

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How to repond to a kinetic impact electronically
0 votes

How about piezo film sheet eg http://www.meas-spec.com/product/t_product.aspx?id=2488 ?

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