YouTube Twitter RSS AboutMe

Electro Bob

YouTube Twitter RSS AboutMe
 
Skip to content
  • Projects
  • Ideas and Articles
  • Useful stuff
  • About me
13 Comments

WS2812 level translator

  By electrobob March 15, 2014 February 8, 2017 Ideas and Articles, Utils

Simple way to guarantee correct driving of WS2812 from a 3.3V micro, without any special parts, just another WS2812 LED. Continue reading

Tagged   3.3V, 5V, arduino, arm, atmel, converter, driver, led, level, micocontroller, neopixel, shifter, supply, translator, ws2811, ws2812
16 Comments

Heatsink Tester

  By electrobob January 11, 2014 February 8, 2017 Projects, Utils

How much heat can a heatsink dissipate? Automated tester with cool interface and graphs! Continue reading

Tagged   AVR, ds18b20, ds18s20, ds18x20, heat sink, heatsink, measure, resistance, sensor, temperature, thermal, xmega
4 Comments

LED logger V2

  By electrobob December 21, 2012 February 8, 2017 Projects

How long do LED’s last? Let’s check their intensity and find out, featuring an internet connected tester! Continue reading

Tagged   atmel, AVR, cosm, data, data logger, enc, enc28j60, ethernet, inteneisty, internet, led, led logger, logger, lux, luxmeter, microchip, pachube, strip
13 Comments

Blue Panda

  By electrobob December 21, 2012 February 8, 2017 Projects, Utils

Bringing bluetooth to this super cute panda speaker i got as a present. Continue reading

Tagged   audio, bluetooth, digital, panda. serioux, portable, portable speaker, speaker, wire, wireless
43 Comments

LED logger

  By electrobob October 22, 2012 February 8, 2017 Ideas and Articles, Projects

Do LEDs really last as much as they say? I’m building a tester to find out. Continue reading

Tagged   arduino, breadboard, CFL, current, efficacy, intensity, led, ledstrip, light, lights, Nichia, strip, TSL2550, warm, warm white, white
11 Comments

Idle power consumption

  By electrobob August 26, 2012 February 8, 2017 Ideas and Articles

How much standby power do your devices burn? I’m hacking an energy meter to be super sensitive and measure the tiniest vampire power. Continue reading

Tagged   adapter, consumption, diy, idle, mains, meter, no load, power, shunt, supply, unloaded, wal wart
26 Comments

Auto AMP

  By electrobob August 25, 2012 February 8, 2017 Projects

Making an amplifier turn on only when there is signal present, to save power and effort. Continue reading

Tagged   amplifier, auto, automatic, decection, detect, off, on, power, signal, sound, threshold
5 Comments

Digital Power Supply – Part 2: Prototype

  By electrobob February 19, 2012 February 8, 2017 Ideas and Articles, Projects

The first prototype of my digitally controlled power supply. Continue reading

Tagged   ADC, analog, comparator, DAC, digital, erros, loop, microcontroller, power, prototype, regulator, smps, supply, test, transformer, transistor, xmega, xmega32a4
18 Comments

Fun with LEDs

  By electrobob January 5, 2012 February 8, 2017 Projects

Simple circuits to get night lights on the hallway and motion lights in the rest of the house. Continue reading

4 Comments

Unlocking stuck photo filters

  By electrobob November 4, 2011 February 8, 2017 Ideas and Articles

Simple way to unlock 2 stuck photo filters with nothing but a ribbon. Continue reading

Tagged   camera, filter, locked, polarizer, polarizing, rotating, screw, stuck, thread, unlock, UV
«‹7891011›»

  • Recent posts

    • Always working solar lamp – Part 3: creating a mutant
    • Ikea SOLVINDEN batteries aging
    • Always working solar lamp – Part 2: right under my nose
    • Ikea SOLVINDEN fail – it’s the switch!
    • Always working solar lamp – Part 1: the data
    • Prusa Mini box – 2 ways compared
    • USB C cable mysteries
    • Electric cars are like economic lights
    • Solar panels for sensor nodes
    • Wurkkos HD15 flashlight review

  • Most viewed

    • Sunrise simulator - 208,338 views
    • LED UV exposure box part 1, the box - 112,969 views
    • Peaktech 6225A review - 69,094 views
    • LED logger - 63,346 views
    • Fast 3D printed boxes - 60,242 views
    • EGO BOX - 59,410 views
    • LED UV exposure box part 2, the timer - 53,755 views
    • 555 class D amplifier - 46,500 views
    • Digital Power Supply – Part 3: Concept comparison - 44,766 views
    • WS2812 level translator - 44,452 views

  • All posts

    • Always working solar lamp – Part 3: creating a mutant November 15, 2025
    • Ikea SOLVINDEN batteries aging September 17, 2025
    • Always working solar lamp – Part 2: right under my nose September 15, 2025
    • Ikea SOLVINDEN fail – it’s the switch! September 15, 2025
    • Always working solar lamp – Part 1: the data September 22, 2024
    • Prusa Mini box – 2 ways compared September 22, 2024
    • USB C cable mysteries August 3, 2024
    • Electric cars are like economic lights February 20, 2024
    • Solar panels for sensor nodes April 29, 2023
    • Wurkkos HD15 flashlight review April 16, 2023
    • Simple LED strip UPS – closed. March 25, 2023
    • Another two torches with self dimming March 25, 2023
    • An odd torch – Energizer Pivot March 19, 2023
    • Too much sleep power February 2, 2023
    • Stop it with the coin cells! January 16, 2023
    • NAS to NUC December 4, 2022
    • Why we need USB charging on everything December 4, 2022
    • Wet sensors (or humidity sensor troubles) June 25, 2022
    • Why internet is fast and cheap in Romania and some other countries (but expensive and slow in others) June 25, 2022
    • Notes on Nikon USB-PD charging June 19, 2022
    • Why camera WiFi sucks March 2, 2022
    • Asus G14 – super short review February 18, 2022
    • Step up from 1 AA cell – again February 18, 2022
    • 10002 The hidden database April 22, 2021
    • ESP-NOW March 2, 2021
    • driving a string of anti parallel LEDs November 18, 2020
    • The stupidity of thin laptops October 24, 2020
    • Ikea TRÅDFRI review July 5, 2020
    • TP-Link KL50 smart light bulb teardown July 5, 2020
    • Technology I want April 5, 2020
    • Fast 3D printed boxes March 29, 2020
    • The basil speaks to me – Part 2 November 5, 2019
    • 10002 Server November 4, 2019
    • 10002 I2C connectors November 4, 2019
    • 10002 Screens and controls October 2, 2019
    • 10002 Zen July 24, 2019
    • 10002 Short assembly run no 2 July 24, 2019
    • The basil speaks to me July 23, 2019
    • GPP-4323 power supply review June 3, 2019
    • New 3D printer May 19, 2019
    • 10002 Control panel horror May 19, 2019
    • The coolness of RGB LEDs April 21, 2019
    • Lazy smoke away November 27, 2018
    • 10002 Short assembly run November 3, 2018
    • Wine lamp June 26, 2018
    • Vorpal hexapod June 26, 2018
    • 10002 Motion sensors? June 6, 2018
    • 10002 Temperature sensors? June 6, 2018
    • Simple audio mixer December 25, 2017
    • Bosch glue pen teardown May 21, 2017
    • 10002 Progress May 9, 2017
    • 10002 Architecture and Software April 30, 2017
    • Analog Discovery USB isolation March 11, 2017
    • RFM69 output power March 7, 2017
    • Peaktech 6225A review February 5, 2017
    • PSU Burner January 31, 2017
    • TryingArduino January 6, 2017
    • 10002 Software November 2, 2016
    • 10002 Hardware November 2, 2016
    • 10002 Lessons learned November 2, 2016
    • 10002 Smart Home November 2, 2016
    • Castellated pads July 31, 2016
    • Fixing a broken scroll switch July 29, 2016
    • Cheap China July 25, 2016
    • AutoResetRRR May 3, 2016
    • Mini ikea molgan hack March 2, 2016
    • Digital Power Supply – Part 3: Concept comparison February 23, 2016
    • Bad wires December 6, 2015
    • Sit.Up August 12, 2015
    • Active probe August 6, 2015
    • Ser SHOW April 26, 2015
    • Quiet 3D printer April 19, 2015
    • 5UP – simple 5V UPS April 15, 2015
    • Simple active/standby current measurement April 15, 2015
    • AVR programmer fix April 11, 2015
    • LED Logger V3 March 15, 2015
    • ESP8266 tests November 17, 2014
    • Stockie – item centric shopping list July 30, 2014
    • Another XMEGA header board July 29, 2014
    • Web interfaces June 16, 2014
    • WS2812 level translator March 15, 2014
    • Heatsink Tester January 11, 2014
    • LED logger V2 December 21, 2012
    • Blue Panda December 21, 2012
    • LED logger October 22, 2012
    • Idle power consumption August 26, 2012
    • Auto AMP August 25, 2012
    • Digital Power Supply – Part 2: Prototype February 19, 2012
    • Fun with LEDs January 5, 2012
    • Unlocking stuck photo filters November 4, 2011
    • Upgrading spotlights to LED June 20, 2011
    • XMEGA header board April 12, 2011
    • Digital Power Supply – Part 1: Concept March 17, 2011
    • 555 class D amplifier February 28, 2011
    • Secret knock detector with 555 February 28, 2011
    • 555 / 556 H bridge February 22, 2011
    • EGO BOX January 15, 2011
    • Toner transfer to ABS December 3, 2010
    • LED UV exposure box part 2, the timer September 29, 2010
    • USB tree September 4, 2010

  • Links


    Warning: Undefined variable $bbw_cat in /home/relect20/public_html/wp-content/plugins/better-blogroll/better_blogroll.php on line 54
    • Crazy Engineers
    • Dvice
    • EEVBlog
    • EEWEB
    • Electrical Engineering Community
    • Electronics Design News
    • Electronics Lab Blog
    • Hack a day
    • Lifehacker
    • Online Schematic Tool
    • Otter equipment
    • PCB Prototype
    • ZofzPCB 3D gerber viewer
Powered by Parabola & WordPress.
We use cookies to ensure that we give you the best experience on our website. If you continue to use this site we will assume that you are happy with it.