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Looking for a sensor to detect steps Often, for reasons of weather or otherwise, I will exercise on a step platform. I count the steps mentally, but I want to wire up an AVR to do it for me so I can just zone... |
Wednesday, 20 April 2022 - 00:15 |
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RC on reset pin, necessary or not? Since I started working with micros I've always added an RC on the reset pin. This was always called for back in the day. But now I'm thinking I missed a memo and that... |
Wednesday, 13 October 2021 - 02:26 |
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How do I create a branch target label in a macro? I haven't needed to do this in decades, but I do now. I need to create a local label inside an assembly language macro such that it (obviously) is different for each... |
Saturday, 5 June 2021 - 22:01 |
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Questions about PRNGs I have a few questions about PRNGs. Maybe somebody can point me to some answers online, or even answer them here. Many thanks beforehand! 1) If a particular... |
Tuesday, 20 October 2020 - 04:18 |
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ARM SWD doesn't need nRESET? I was looking at various small ARM Cortex boards on eBay and I noticed that many of them bring out Vdd, GND, SWCLK and SWDIO, but not nRESET. The ARM SWD interface includes... |
Tuesday, 29 September 2020 - 15:43 |
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Is this the most useless voltage regulator ever? I found some of these in a box so I looked them up. A 5V regulator with a maximum input voltage of 6V ?!?! What in the world would this be good for? Maybe it's... |
Sunday, 27 September 2020 - 21:14 |
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I need to read simple files off a USB drive with minimum hardware. What approach should I use? I have a potential application that would use USB drives to hold some configuration data, and I'm trying to understand the simplest approach to do this. The application... |
Tuesday, 31 March 2020 - 21:20 |
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Will the world end if I ignore this? Bought some micros cheap for hobby use. This was on the bag. |
Wednesday, 24 July 2019 - 21:48 |
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What was your first micro programming experience? I'll tell you mine (and date myself). Back in the mid 70s the price of 8080As had finally dropped down to something a student could afford, at $39.95 (James Electronics).... |
Sunday, 21 July 2019 - 23:15 |
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Any interest in Cortex M0+ ASM code to drive WS2812B LEDs? Not sure if this is the right forum to ask, but I've written an ASM routine for Cortex M0+ to bit-bang output data for WS2812B LEDs that I'm happy to share. The... |
Monday, 24 June 2019 - 19:42 |
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What's a good level translator from 3.3V to 5V? Either single drivers or multiples. I have occasions where I need to drive 5V hardware, and I'd also like to work more with ARMs, which, with a few exceptions, top out at 3.3V. So what are some standard... |
Friday, 21 June 2019 - 20:13 |
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Has anybody used the ADC LSB to generate random bit sequences? I might have an application where such random bit sequences are useful. I had the idea of connecting an output pin (which is doing its own thing driving some hardware)... |
Tuesday, 18 June 2019 - 19:45 |