Shared Projects by johnsondavies

Shared Projects by johnsondavies

ATtiny10 Thermometer

2 layer board of 0.75 x 0.75 inches (19.1 x 19.1 mm)
Uploaded: February 2nd 2019
Shared: February 2nd 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>.

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Lisp Badge

2 layer board of 4.20 x 2.40 inches (106.7 x 61.0 mm)
Uploaded: November 28th 2018
Shared: January 10th 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 13th 2017
Shared: November 30th 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 5th 2018
Shared: November 15th 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

Tiny Machine-Code Monitor

2 layer board of 1.90 x 2.40 inches (48.3 x 61.0 mm)
Uploaded: July 18th 2018
Shared: July 18th 2018
Total Price: $22.80

A machine-code monitor that you program from a hexadecimal keypad using a simplified machine code called MINIL. MINIL is designed to be easy to understand, so it's ideal for learning about the fundamentals of machine code.

See <http://www.technoblogy.com/show?283C>.

A machine-code monitor that you program from a hexadecimal keypad using a simplified machine code called MINIL. MINIL is designed to be easy to understand, so it's ideal for learning about the fundamentals of machine code.

See <http://www.technoblogy.com/show?283C>.

Embeddable link to order this shared Project