Shared Projects by johnsondavies

Shared Projects by johnsondavies

Tiny Function Generator

2 layer board of 1.60 x 1.25 inches (40.7 x 31.8 mm)
Uploaded: December 23, 2018
Shared: February 07, 2019
Total Price: $10.00

A signal generator based on an ATtiny85 that uses Direct Digital Synthesis to generate a range of different waveforms, including sine, square, triangle, and noise.

See <http://www.technoblogy.com/show?2FCL>.

A signal generator based on an ATtiny85 that uses Direct Digital Synthesis to generate a range of different waveforms, including sine, square, triangle, and noise.

See <http://www.technoblogy.com/show?2FCL>.

Embeddable link to order this shared Project

ATtiny10 Thermometer

2 layer board of 0.75 x 0.75 inches (19.1 x 19.1 mm)
Uploaded: February 02, 2019
Shared: February 02, 2019
Total Price: $2.80

A small battery-powered thermometer based on an ATtiny10 and a DS18B20 temperature sensor that displays the temperature as a series of red and green flashes on a bi-colour LED.

See <http://www.technoblogy.com/show?2GPX>.

A small battery-powered thermometer based on an ATtiny10 and a DS18B20 temperature sensor that displays the temperature as a series of red and green flashes on a bi-colour LED.

See <http://www.technoblogy.com/show?2GPX>.

Embeddable link to order this shared Project

Lisp Badge

2 layer board of 4.20 x 2.40 inches (106.7 x 61.0 mm)
Uploaded: November 28, 2018
Shared: January 10, 2019
Total Price: $50.40

A handheld computer with a self-contained keyboard and display that you can program in Lisp.

See: <http://www.technoblogy.com/show?2AEE>.

A handheld computer with a self-contained keyboard and display that you can program in Lisp.

See: <http://www.technoblogy.com/show?2AEE>.

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Continuity Tester

2 layer board of 1.75 x 0.40 inches (44.4 x 10.2 mm)
Uploaded: November 13, 2017
Shared: November 30, 2018
Total Price: $3.50

This article describes a simple continuity tester, based on an ATtiny85 and a piezo buzzer, designed for checking circuit wiring, or tracing out the tracks on a PCB.

It has a low threshold resistance of 50Ω to avoid false positives, and passes less than 0.1mA through the circuit under test, to…

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This article describes a simple continuity tester, based on an ATtiny85 and a piezo buzzer, designed for checking circuit wiring, or tracing out the tracks on a PCB.

It has a low threshold resistance of 50Ω to avoid false positives, and passes less than 0.1mA through the circuit under test, to…

Show full description

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I2C GPS Module

2 layer board of 0.85 x 1.25 inches (21.6 x 31.8 mm)
Uploaded: November 05, 2018
Shared: November 15, 2018
Total Price: $5.30

A compact GPS module with an I2C interface, making it easy to read the GPS parameters from another project without needing to worry about parsing the NMEA sentences. It's based on an ATtiny841 and a GTPA010 GPS module.

See <http://www.technoblogy.com/show?2C86>.

A compact GPS module with an I2C interface, making it easy to read the GPS parameters from another project without needing to worry about parsing the NMEA sentences. It's based on an ATtiny841 and a GTPA010 GPS module.

See <http://www.technoblogy.com/show?2C86>.

Embeddable link to order this shared Project