Game Instance

Let the games begin

Electronics

Electronic components, devices and circuits.

Fluke 8840A restauration

80s SoTA 5-1/2 digit multimeter

2025-03-22

Technics SU-VX920 review

love it or leave it

2025-03-09

Technics SU-VX920 repair - 4th part

wrong adaptor relay

2025-02-22

Technics SU-VX920 repair - 3rd part

left channel noise

2025-02-09

Technics SU-VX920 repair - part 2

headphones relay adaptation

2025-02-02

Technics SU-VX920 repair

current drive fix

2025-01-18

Technics SU-VX920

high-end amp of early 90s

2024-12-28

ESP32 PCM56 player

An ST-S505 integration

2024-06-01

PCM56 audio player

ESP32 evolution

2024-03-10

Technics ST-S707

80s top-shelf tuner

2024-03-02

PCM56 audio player

An ESP8266 application

2024-02-11

Classix II clearcoat revival

Pun intended

2023-12-23

Technics SL-P200

Last of its name

2023-06-10

From Gosund to Tasmota in 45 minutes

A jail-break story

2022-12-30

Restoration of an HP 6289A

Cleanup and reassembly

2022-12-26

Restoration of an HP 6289A

Troubleshooting and repair

2022-01-16

Restoration of an HP 6289A

Disassembly and investigations

2022-01-09

Restoration of an HP 6289A

Sifting through 50 years of dust

2022-01-02

An unexpected Christmas present

from another age

2021-12-25

DIY linear bench power supply

Part 2 - series regulator circuit

2021-04-25

DIY linear bench power supply

Part 1 - sourcing heavy parts

2021-03-28

Bench-top power supply

Informed choice

2021-02-21

Merry Christmas!

Guess contest

2020-12-25

STM32F030K6T6 dev board

an underestimated MCU

2020-04-12

Cloning MPS-TF2E Remote Controls

A widget for DIY code word generation

2019-01-20

Replicating 433 MHz Remote Control Signals

A real world DIY application

2019-01-12

Decoding 433 MHz Remote Control Signals

Some tech, more DIY

2019-01-02

STM32 Oscilloscope with FFT and SD export

The Arduino code

2018-11-11

STM32 Oscilloscope

2.57 Msps with FFT spectrum scope and SD card export

2018-11-04

DIY PCB fabrication

Negative acting photosensitive UV curable film

2018-10-27

H-Bridge

Driving DC motors both ways

2018-10-13

Baffle step correction

A Hail Mary attempt on my Classix II bass issue

2018-09-23

Speaker impedance measurement

A Python & Arduino gadget

2018-09-16

Classix II - 2 way bookshelf speakers

Featuring: Dayton DC160-8 and Vifa BC25TG15-04

2018-09-09

Bass-Reflex phase corrector

IIR 2nd order digital filter

2018-05-06

Classix II

A Paul Carmody design

2018-04-22

DIY Bookshelf Speakers

Loudspeaker design 101

2018-04-15

UV-Box 400

Part 5 - The Arduino circuit and sketch

2018-03-18

UV-Box 400

Part 4 - The Arduino compartment

2018-03-11

UV Exposure Box

Part 3 - Building it

2018-03-04

UV Exposure Box

Part 2 - The high voltage electric circuit

2018-02-18

UV Exposure Box

DIY PCB manufacturing

2018-02-04

Dual NiMH Battery Smart Charger

A Web based interface

2018-01-27

Dual NiMH Battery Smart Charger

Part 5 - Limitations

2018-01-14

Dual NiMH Battery Smart Charger

Part 4 - Reducing the overcharge

2017-12-17

Dual NiMH Battery Smart Charger

Part 3 - The Arduino code

2017-12-09

Dual NiMH Battery Smart Charger

Part 2 - The build

2017-12-02

Smart NiMH Battery Charger

Arduino DIY at its best

2017-11-26

Arduino NiMH Battery Discharger

Preventing the Memory Effect

2017-11-19

Non-synchronous Buck Converter

Efficiency evaluation

2017-11-12

Bluetooth audio receiver

The C7THN50004 chip self-designated WIN-668

2017-11-05

Maze Explorer game

For Arduino Game Console

2017-10-29

Precise battery cell voltage measurement

Yet another Arduino application

2017-10-22

Space Invaders game

For the Arduino Game Console

2017-10-15

Game Console on Arduino

First model

2017-10-05

Arduino irrigation system with bluetooth

A remote control application

2017-06-26

Simple solar battery charger

Upgrade: replacing the protection diodes with a Schottky

2017-06-23

Arduino plant irrigator with bluetooth

An SPP-CA bluetooth remote control application

2017-06-18

Arduino controlled buck converter

A simple step-down voltage regulator

2017-06-12

Arduino plant irrigator

For a self sustained garden

2017-05-28

Off-the-grid plant irrigator

For a self sustained garden

2017-05-14

Simple solar battery charger

using the Atmega328p and one P-Channel MOSFET switching transistor

2017-05-06

Happy Easter!

Alien eggs

2017-04-16

Voltage Offset Adjustment with Op Amps

An upgrade for the STM32 Digital Oscilloscope

2017-03-26

Simple STM32 Digital Oscilloscope

Another NT35702 TFT display application

2017-03-20

2.4" TFT LCD NT35702

with STM32F103C8

2017-03-12

2.4" TFT LCD with Touch and SD Card reader

320x240 16bit NT35702 controller

2017-03-05

Real-time SPI transmission

For the Arduino PWM Audio Controller

2017-02-26

Arduino Audio Controller

A Pulse Width Modulation application

2017-02-19

LCD 1602 Hitachi

a 16 x 2 chars text display

2017-02-10

Hall Effect current measurement

ACS712

2017-02-03

Hall Effect sensor

A3144 switch

2017-01-29

Serial Peripheral Interface

the Arduino way

2017-01-22

Serial Peripheral Interface

or SPI

2017-01-15

STM32F103C8

in Arduino Pro Mini clothes

2017-01-08

Festive lights

Flippity-flop, what the?

2016-12-18

Photoresistor

Light sensitive switch

2016-12-11

Festive lights

Transistor Astable Mutivibrator with LEDs

2016-12-04

Sorry to interrupt

but this is important

2016-11-27

Digital Oscilloscope

Yet another Arduino application

2016-11-20

The Snake game for Arduino

A Nokia 5110 LCD demo

2016-11-13

Nokia 5110 LCD for Arduino

A graphic 84x48 display

2016-11-06

PCB manufacturing

DIY techniques

2016-10-31

Simple solar battery charger - PCB design

Using KiCad - the open source Electronics Design Automation Suite

2016-10-21

Temperature compensated charging voltage

for the simple solar battery charger

2016-10-14

Simple solar battery charger

A 3 dollar Arduino project

2016-10-05