Monthly Archives: January 2021

Extended RC circuit analysis

I’ll keep this short, because I don’t think many people read my blog. If you want me to dive a bit deeper into the maths then let me know, and maybe I’ll explain further what’s going on. Blogging mathematics is … Continue reading

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Bizarre freecycle stuff

So I figured I’d look at my local Freecycle to see what was on offer. Amongst the offerings are: 12 empty brown beer bottles. Um, could you not just dispose of them? 3 big bags hardcore. Not quite sure what … Continue reading

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#RaspberryPi: Picol for the Pico (Tcl-like)

Picol is a Tcl-like language written in 587 lines of C code, written by Salvatore Sanfilippo. Porting it to the Pico proved straightforward. I made only minor tweaks, like getting the serial port to echo the input. It’s a very … Continue reading

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#RaspberryPi Pico: Hertz frequency measure

I’ve only got a cheapo oscilloscope, and it’s often inconvenient to use. A more convenient alternative, if I just want to measure frequencies, is to use an Arduino Nano. I found that it taps out at approx. 70kHz (code here). … Continue reading

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#RaspberryPi Pico – let’s make an atrocious synthesiser

Inspired by the electrical musical inventions on the YT channel “Look Mum No computer“, I wondered if we could turn the Pico into a synthesiser. I think it’s kinda cool because it shows what the Pico can do that might … Continue reading

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#stm8s OLED1306 bare metal working

I finally managed to get an OLED1306 128×64 working on an STM8 using my bare metal library. The code is a mess and certainly needs cleaning up. But it’s certainly a start. Code here: https://github.com/blippy/rpi/tree/master/stm8s103f3p6/bare8/13-ssd1306

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#RaspberryPi Pico: Working OLED

OK, so I’ve finally got a 128×64 SSD1306 OLED working in both MicroPython and the C++ SDK. You’re probably best off cloning my git repo: git clone https://github.com/blippy/rpi/tree/master/1306 Navigate to the relevant directory: cd rpi/1306 MicroPython Upload ssd1306.py s onto … Continue reading

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Displaying the Raspberry Pi Pico’s on-board temperature on an SPI LCD

I got my new Raspberry Pi Pico, and I’ve been very impressed by it. I can see it easily becoming my go-to board. The Pico has an on-board temperature sensor. I thought it would be a great idea to display … Continue reading

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No man is …

No man is good enough to govern another man without the other’s consent. — Abraham Lincoln

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What is history …

“What is history but the story of how politicians have squandered the blood and treasure of the human race?” ― Thomas Sowell

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