Hobby Electronics Basics

Altering PCBs

No way to pull over a heavy commercial vehicle after knocking off its tail light even if you wanted to so even though i...

0 comments posted 3yrs

posted by bretcahill

0 comments posted 3yrs posted by bretcahill

Capacitor rules

Hi folks I'm really new with electronics. Doing a massive project for a retro computer system and, as a prong of this p...

2 comments posted 3yrs

posted by me

2 comments posted 3yrs posted by me

Email configuration for security camera

I was not sure which group to post this too, so this is the closest I could find. I have a security camera sold by Harb...

3 comments posted 3yrs

posted by scientist77017

3 comments posted 3yrs posted by scientist77017

Testing small Transformer questions

I have a dead Ac/Dc adaptor. I'm busted it just to learns stuff. Im trying to learn how to test Transformers. This tran...

8 comments posted 3yrs

posted by colinmarr0

8 comments posted 3yrs posted by colinmarr0

Trying to understand math for Battery resistance ?

I’m working though understanding this description in this book. see attachment link below. I have tried this method for...

2 comments posted 3yrs

posted by colinmarr0

2 comments posted 3yrs posted by colinmarr0

Ideas for a 12V brake light flasher circuit

Hi, I'd like to try and build a brake light flasher circuit for a motorcycle (12V). Brake light should flash 3-5 times...

4 comments posted 3yrs

posted by videmos0

4 comments posted 3yrs posted by videmos0

Phone no longer charges

I have a Samsung S5 cell phone. It just now stopped charging. ?? I have tried at least 3 different charging cables, and...

1 comments posted 3yrs

posted by scientist77017

1 comments posted 3yrs posted by scientist77017

How to know when to change battery in multimeter

On my multimeter, the voltage readings get inaccurate over time due to battery discharge. My meters all use 9 volt batte...

3 comments posted 3yrs

posted by scientist77017

3 comments posted 3yrs posted by scientist77017

Recap On Absolute Cheapest Dummy Load

Eventually road 15 km against the wind in highest assist. The motor and refurbished battery were both uniformly warm. T...

0 comments posted 3yrs

posted by bretcahill

0 comments posted 3yrs posted by bretcahill

Absolute Cheapest Load To Test A Rebuilt Battery

Need to draw 18 Amps from a 36 v battery. For 5 minutes. 2 lugs in a brine solution? Drive rebar into the ground?

5 comments posted 3yrs

posted by bretcahill

5 comments posted 3yrs posted by bretcahill

Hear sounds from TV to my radio

I want to hear sound from my Tv using my standalone radio. All the TV output HDMIs are being used. My inputs on my radio...

1 comments posted 3yrs

posted by scientist77017

1 comments posted 3yrs posted by scientist77017

OT - Standby electrics - worth consideration?

I just worked out that in my (UK) house (with my children long gone!). The electric standby items are going to cost £45...

14 comments posted 3yrs

posted by charlie

14 comments posted 3yrs posted by charlie

Detect the turbidity

Hello good day! I need a simple circuit to detect the turbidity of the reuse water from the washing machine, that is, d...

2 comments posted 3yrs

posted by macloyola

2 comments posted 3yrs posted by macloyola

Replacement for Li-Ion battery

I want to replace this 3.7 Volt Lithium Ion battery. The dimensions are 1 14/16 x 8/16 inch. Can some help me find a rep...

2 comments posted 4yrs

posted by scientist77017

2 comments posted 4yrs posted by scientist77017

(accidentally) shorted a mosfet's drain and source

For a project I noticed my Arduino PWM pump controller (basically just an Arduino, MOSFET, and protection diode) was be...

5 comments posted 4yrs

posted by mrdarrett

5 comments posted 4yrs posted by mrdarrett