Four inexpensive digital microscopes put to the test – surprising results!

Project Sinclair – Color with the ZX81 – Chroma81 and ZXpand+

How to do it – DIY Joystick Tester - Do your retro joysticks still work? Find out.

Project Sinclair - ZX-HD & DivMMC - These 2 upgrades are needed by EVERY ZX Spectrum owner

Project Sinclair - Zxpand+ This sound takes you back to the 80s!

Project Sinclair - Spectrum128 +2B - The true saga ends HERE!

Theremin to the power of 6 - The Pollin Optical Theremin

#Keyestudio – Smart Farm Kit (ESP32)

Project Sinclair - Sinclair QL – Big Brother Returns Home

Franzis #Synthesizer – DIY small musical instrument

Keyestudio – Inventor Starter Kit – Working with the Scratch program Kidsblock

Theremin hoch 6 - Franzis #Theremin

Project Sinclair – How different ZX printers make printing.

Schneider CPC6128 – The Visit of the Old Lady to the Brave Little Tailor

Theremin hoch 6 – Light Theremin from the Electronics Museum in Tettnang

Theremin Explanation: Function and DIY 2025

M5Stack – First experiences with the card puter

Keyestudio – Inventor Starter Kit for the Arduino Nano

MPF-1B – Testing and removing a motor for the printer interface from a Sharp CE-125 system.

Project Sinclair – Three simple video mods for the Sinclair Spectrum

Keyestudio – Inventor Starter Kit for ESP32

Taken off the shelf – KOSMOS Robot Control

PicoRam6116 - Old hardware rethought - Micro Professor meets modern technology

Old sensors on new UNOs – RGB LED & SMD RGB LED

MPF-1B – Micro Professor

Project Sinclair - ZX81 – PIO card with various functions

BBC Micro:bit DIY # 06 – DHT11 and OLED Display

Old sensors on new UNOs – Laser Module

PICORam 2090 – Aufbau und Arbeit mit dem Busch microtronic 2090 Computer

Taken off the shelf – KOSMOS Microman

How to do it - IDC Crimping Adapter for Connectors

Old sensors on new UNOs - active and passive buzzers

Busch microtronic 2090 and the 2095 cassette recorder emulator

KC85 and the M052 USB module housing

Project Sinclair – Case for the TZX Duino (Remix)

Old sensors on new UNOs – IR transmit and receive sensors

Elegoo Robot Car Kit V2 – Rebuilding an old version

Old sensors on new UNOs – Dallas 18B20 temperature sensor

Old sensors on new UNOs – DHT11 temperature sensor

What a shine in my house – Geeetech Silk Dual Color Filament

Retro Chip Tester Pro – A good tool for working with the retro computer

Taken from the shelf - KOSMOS physics internship electrical engineering - Elektromann 3

KOSMOS Anniversary 📻Radioman in 2023 – A short introduction

Project Siclair - ZX Diag Cart - Test card for the ZX Spectrum

Kosmos CP1 and the other modules

How I do it - DT3 - USB cable tester

Arduino in a nutshell – Arduino UNO R14 Minima & WiFi

A case for the transistor tester GM328A

Sony HB-201P – My Basement Kids #01 (MSX Computer)

Amstrad - M4 Board - The Brave Little Tailor - Super Prank

Two types of Duinos - MAXDuino and TZXDuino - Sinclair tape loaders

How I do it - 7 inch HDMI display and housing

Learning computer MC51 - An old circuit board from 1998

How I do it - 3D printed IC pin aligner

Arduino in a nutshell - XIAO SAMD21 and the extension

TL866 - Neatly packed.

GBS-8200 Video Converter - "The Converter"

Taken from the shelf - KOSMOS Computer Practice CP1

Arduino in a nutshell – ESP32-S3 1.9" T-Display

📦 Unpacked and packed - TL866 II plus Universal Programmer