iiinova — where your digital self keeps evolving

Technoblogy @technoblogy.com · 07/09/2026

This is a PCB version of my AVR16EB28-based digital signal generator. It generates a crystal-accurate square wave of from 2Hz to 33.5MHz in precise steps of 2Hz. You can enter an exact frequency, or adjust the frequency continuously using a rotary encoder: www.technoblogy.com/show?5QE2

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Technoblogy @technoblogy.com · 21/07/2026

This is a NeoPixel driver based on a Microchip AVR16DD20 that fits on a small USB-C dongle. It lets you control NeoPixel LEDs using an infrared remote control: www.technoblogy.com/show?5O8R

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Technoblogy @technoblogy.com · 02/07/2026

This digital signal generator, based on an AVR16EB28, generates a crystal accurate square wave of from 2Hz to 33.5MHz in precise steps of 2Hz. You can enter an exact frequency, or adjust the frequency continuously using a rotary encoder: www.technoblogy.com/show?5Q7F

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Technoblogy @technoblogy.com · 02/06/2026

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: www.technoblogy.com/show?5H4W

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Technoblogy @technoblogy.com · 26/05/2026

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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Technoblogy @technoblogy.com · 14/05/2026

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: www.technoblogy.com/show?54EI

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Technoblogy @technoblogy.com · 02/05/2026

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: www.technoblogy.com/show?5O3E

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Technoblogy @technoblogy.com · 25/02/2026

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: www.technoblogy.com/show?5AII

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Technoblogy @technoblogy.com · 14/01/2026

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: www.technoblogy.com/show?5DCO

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Technoblogy @technoblogy.com · 18/11/2025

This USB-C Power Delivery Dongle delivers one of six fixed voltages from a USB-C power adapter that supports Power Delivery: www.technoblogy.com/show?5729

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Technoblogy @technoblogy.com · 04/11/2025

The Bauble is a spherical festive decoration, based on an AVR32DD28, with 16 coloured LEDs that you can program to flash in different patterns: www.technoblogy.com/show?4O86

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Technoblogy @technoblogy.com · 27/10/2025

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: www.technoblogy.com/show?5DEV

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Technoblogy @technoblogy.com · 26/08/2025

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: www.technoblogy.com/show?5CC0

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Technoblogy @technoblogy.com · 20/08/2025

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: www.technoblogy.com/show?5BQG

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Technoblogy @technoblogy.com · 12/08/2025

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): www.technoblogy.com/show?5BGM

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Technoblogy @technoblogy.com · 29/07/2025

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: www.technoblogy.com/show?2AON

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Technoblogy @technoblogy.com · 09/07/2025

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: www.technoblogy.com/show?3V6B

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Technoblogy @technoblogy.com · 20/05/2025

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: www.technoblogy.com/show?53Z6

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Technoblogy @technoblogy.com · 15/04/2025

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 www.technoblogy.com/show?55KG

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Technoblogy @technoblogy.com · 25/03/2025

My latest project, TinyCard, is a simple text game maker to allow children to create short adventure games, interactive stories, surveys, or quizzes: www.technoblogy.com/show?51KR

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Technoblogy @technoblogy.com · 04/03/2025

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: www.technoblogy.com/show?547T

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Technoblogy @technoblogy.com · 04/03/2025

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: www.technoblogy.com/show?547T

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Technoblogy @technoblogy.com · 17/12/2024

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 an ATtiny85: www.technoblogy.com/show?4WX8

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Technoblogy @technoblogy.com · 09/12/2024

Automatically expand a 6x8 pixel character set to plot smooth, hinted, double-sized characters: www.technoblogy.com/show?53BK

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Technoblogy @technoblogy.com · 16/11/2024

The Cardputer uLisp Machine is a self-contained handheld Lisp computer based on the low-cost M5Stack Cardputer; for more information see: www.ulisp.com/show?52G4

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