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Technoblogy @technoblogy

Electronics projects with legs.

Joined September 2010
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162 Photos and videos
This circuit lets you control a set of one or more high-power NeoPixel RGB LEDs with an infrared remote control. It's based on an AVR64DD14 and a TSOP38238 IR receiver: technoblogy.com/show?5H4W
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Here's a simple HSV to RGB function that can be expressed in a single line of C, as demonstrated by this plot of hue against saturation: technoblogy.com/show?3Z49
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Here is an improved version of my TinyCard project, a simple text game maker to allow children to create short adventure games, interactive stories, surveys, or quizzes. It's based on a 160x128 colour TFT display and a Microchip ATtiny3224: technoblogy.com/show?54EI
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My Universal TFT Display Backpack is a microcontroller board based on a Microchip ATtiny814 that can accommodate a range of different Adafruit and AliExpress colour TFT displays: technoblogy.com/show?5O3E
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I built a Feather-format board based on the new ESP32-P4, a dual-core RISC-V processor running at up to 400MHz, with 768KB of on-chip SRAM, 32Mbytes of on-chip PSRAM, and up to 32Mbytes of external flash: technoblogy.com/show?5AII
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Light Lab allows you to display different patterns on RGB LED NeoPixel (WS2812 or WS2812B) or DotStar (APA102 or SK9822) strips, and experiment with them: technoblogy.com/show?5DCO
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This USB-C Power Delivery Dongle delivers one of six fixed voltages from a USB-C power adapter that supports Power Delivery: technoblogy.com/show?5729
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The Bauble is a spherical festive decoration, based on an AVR32DD28, with 16 coloured LEDs that you can program to flash in different patterns: technoblogy.com/show?4O86
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This simple continuity tester, based on an ATtiny202, a piezo buzzer, and an LED, is ideal for checking circuit wiring, or tracing out the tracks on a PCB: technoblogy.com/show?5DEV
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This final article in the series shows how to fit my hardware driver for NeoPixel (WS2812) LED displays onto the 14-pin AVR64DD14 by taking advantage of the Event System on AVR processors: technoblogy.com/show?5CC0
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This article shows how to eliminate most of the interconnections between pins on my hardware driver for NeoPixel (WS2812) LED displays by taking advantage of the Event System on AVR processors: technoblogy.com/show?5BQG
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My latest project is a driver for NeoPixel (WS2812) LED displays using AVR hardware. It works by combining the SPI peripheral with a Timer/Counter using Configurable Custom Logic (CCL): technoblogy.com/show?5BGM
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The Walkie-Textie is a simple handheld device, based on an ATtiny814, that allows you to send and receive text messages using a 12-key keypad and OLED display: technoblogy.com/show?2AON
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My latest project is a Feather-format board based on the Microchip AVR128DA32. It runs at 24MHz, has 16KB of RAM and 128KB of flash, and runs uLisp: technoblogy.com/show?3V6B
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This is a simple LED tester, based on an ATtiny85 or ATtiny202, that provides a convenient way of testing most types of through-hole or surface-mount LEDs: technoblogy.com/show?53Z6
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For a more relaxed approach to life the Timescale Clock displays the time as a scrolling scale on two bi-colour dot matrix displays; see technoblogy.com/show?55KG
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My latest project, TinyCard, is a simple text game maker to allow children to create short adventure games, interactive stories, surveys, or quizzes: technoblogy.com/show?51KR
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My latest project is a digital clock, based on two 8x8 bi-colour LED dot matrix displays, that changes from red to green if the time is a prime number: technoblogy.com/show?547T
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This is a PCB for my scrolling text display, based on four 8x8 LED dot-matrix displays, that you can edit with a keyboard. It's based on a @MicrochipTech ATtiny85: technoblogy.com/show?4WX8
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Automatically expand a 6x8 pixel character set to plot smooth, hinted, double-sized characters: technoblogy.com/show?53BK
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