Канал: Rich Langner - Electronics

Hollerith hand punch for 80 column punched cards

Hollerith hand punch for 80 column punched cards

Easily measure current in AA - AAA - C - D - 18650 or any round cells that fit in a battery holder.

Easily measure current in AA - AAA - C - D - 18650 or any round cells that fit in a battery holder.

Fake CH340 : Cannot configure port : Permission error 13., when uploading to Wemos D1 mini

Fake CH340 : Cannot configure port : Permission error 13., when uploading to Wemos D1 mini

'Could not open COM port' How to free up COM ports reported as 'In use'

'Could not open COM port' How to free up COM ports reported as 'In use'

Too small for your printer? You can still print tiny labels, etc

Too small for your printer? You can still print tiny labels, etc

Only getting 50% of the mAh from your USB Power Bank? Here's why..

Only getting 50% of the mAh from your USB Power Bank? Here's why..

Andonstar wins : From simple magnifying glass to microscope - which is best? Well, it depends...

Andonstar wins : From simple magnifying glass to microscope - which is best? Well, it depends...

Missing subject line? Edit almost ANYTHING in received emails, dates, subject. Move to other servers

Missing subject line? Edit almost ANYTHING in received emails, dates, subject. Move to other servers

A scratchy sounding speaker repaired at no cost! An unusual technique..

A scratchy sounding speaker repaired at no cost! An unusual technique..

PHANTOM POWER. A visual explanation of how some things can work even without a power connection!

PHANTOM POWER. A visual explanation of how some things can work even without a power connection!

A twin needle Kelvin probe. Quick ,low cost and minimal effort to make.

A twin needle Kelvin probe. Quick ,low cost and minimal effort to make.

Easily print out a list of file names, using drag'n'drop from a Windows/Linux folder.

Easily print out a list of file names, using drag'n'drop from a Windows/Linux folder.

Can this cheap timer hardware be converted into a smart rotary control with built-in display?

Can this cheap timer hardware be converted into a smart rotary control with built-in display?

Low cost 4 wire Kelvin probes, made in minutes. Ideal for finding shorts or measuring milli-ohms .

Low cost 4 wire Kelvin probes, made in minutes. Ideal for finding shorts or measuring milli-ohms .

Easy milliohm meter Project : Locate a short cicuit even if it's in parallel with other components.

Easy milliohm meter Project : Locate a short cicuit even if it's in parallel with other components.

Measure sleep current uA/nA of battery equipment using a cheap meter.

Measure sleep current uA/nA of battery equipment using a cheap meter.

Programming ATTiny85 with VSC and PlatformIO.

Programming ATTiny85 with VSC and PlatformIO.

Soldering wires - how to autofeed exact amounts of solder without special equipment.

Soldering wires - how to autofeed exact amounts of solder without special equipment.

A breakout board and simple GPIO monitor for hardware debugging, for Wemos D1 mini and others

A breakout board and simple GPIO monitor for hardware debugging, for Wemos D1 mini and others

Easy Custom-made front panels for your projects. Colour or monochrome facias made in minutes.

Easy Custom-made front panels for your projects. Colour or monochrome facias made in minutes.

Emergency battery clamp for holding cells during a test.

Emergency battery clamp for holding cells during a test.

A better way to import Arduino projects into VSC (Visual Studio Code) and PlatformIO .

A better way to import Arduino projects into VSC (Visual Studio Code) and PlatformIO .

Preparing Visual Studio Code & PlatformIO for Arduino / ATtiny / ESP8266 / ESP32 / SonOff, etc.

Preparing Visual Studio Code & PlatformIO for Arduino / ATtiny / ESP8266 / ESP32 / SonOff, etc.

MQTT pubSubClient callback(char* topic, byte* payload, unsigned int length) - How to handle payload.

MQTT pubSubClient callback(char* topic, byte* payload, unsigned int length) - How to handle payload.

Fitting an RJ45 network plug can be easy. Here's how to do it in around 60 seconds.

Fitting an RJ45 network plug can be easy. Here's how to do it in around 60 seconds.

Desoldering and removing PCB header pins in a few seconds

Desoldering and removing PCB header pins in a few seconds

Decibels made simple in 5 minutes

Decibels made simple in 5 minutes

Creating a virtual floppy disc and transferring a file to it, using the BeebEm BBC micro emulator.

Creating a virtual floppy disc and transferring a file to it, using the BeebEm BBC micro emulator.

Running BBC ROMS in an emulator on Windows

Running BBC ROMS in an emulator on Windows

Record landline telephone calls with a mobile phone.

Record landline telephone calls with a mobile phone.

Adding an external speaker to a low cost clock radio, improving sound quality.

Adding an external speaker to a low cost clock radio, improving sound quality.

Perfectly aligned holes in your project box without measuring - for a recessed LED.

Perfectly aligned holes in your project box without measuring - for a recessed LED.

Perfectly aligned holes in your project box without measuring - for a recessed (reset style) button.

Perfectly aligned holes in your project box without measuring - for a recessed (reset style) button.

Perfectly aligned holes in your project box - without measuring - USB-micro socket.

Perfectly aligned holes in your project box - without measuring - USB-micro socket.

Perfectly aligned holes in your project box - without measuring - Jack sockets

Perfectly aligned holes in your project box - without measuring - Jack sockets

A fix for Arduino timeout problem: avrdude: stk500v2_ReceiveMessage(): timeout

A fix for Arduino timeout problem: avrdude: stk500v2_ReceiveMessage(): timeout

Wemos D1 mini - visual GPIO port pin activity breakout board

Wemos D1 mini - visual GPIO port pin activity breakout board

Richmeters / Aneng digial 6000 count DVM multimeter - a hack to add range hold and select button.

Richmeters / Aneng digial 6000 count DVM multimeter - a hack to add range hold and select button.

pixel-cube

pixel-cube

Sheffield Hackspace - Phil's balancing robot.

Sheffield Hackspace - Phil's balancing robot.

Neopixel ring: Wemos D1-mini uses websockets for multi-user control

Neopixel ring: Wemos D1-mini uses websockets for multi-user control