Shared Projects by johnsondavies

Shared Projects by johnsondavies

My Projects

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 …

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 …

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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 o…

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 o…

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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 se…

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 se…

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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, s…

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, s…

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