Black Lives Matter - Action and Equality. ... Adafruit is open and shipping.
0

Testing UVC lamps with a cheap UVA/UVB sensor

Recently, Big Clive has investigated whether some items being sold with claims such as “UV-C germicidal lamps” are legit.  In this video, he explains the difference between UV-A, -B, and -C, demonstrates how an Adafruit sensor together with a piece of glass can be re-purposed into a non-calibrated UVC-C detector, and shows that several items are almost certainly not living up to their marketing claims.


We are angry, frustrated, and in pain because of the violence and murder of Black people by the police because of racism. We are in the fight AGAINST RACISM. George Floyd was murdered, his life stolen. The Adafruit teams have specific actions we’ve done, are doing, and will do together as a company and culture. We are asking the Adafruit community to get involved and share what you are doing. The Adafruit teams will not settle for a hash tag, a Tweet, or an icon change. We will work on real change, and that requires real action and real work together. That is what we will do each day, each month, each year – we will hold ourselves accountable and publish our collective efforts, partnerships, activism, donations, openly and publicly. Our blog and social media platforms will be utilized in actionable ways. Join us and the anti-racist efforts working to end police brutality, reform the criminal justice system, and dismantle the many other forms of systemic racism at work in this country, read more @ adafruit.com/blacklivesmatter

Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 20,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/

CircuitPython – The easiest way to program microcontrollers – CircuitPython.org


Maker Business — To make it through a tough business cycle, layoffs should be a last resort

Wearables — Everything in its place

Electronics — The Case Of The Disappearing Capacitance

Python for Microcontrollers — Python on Microcontrollers Newsletter: New Hardware, Python Releases and Much More! #Python #Adafruit #CircuitPython @circuitpython @micropython @ThePSF

Adafruit IoT Monthly — BLE Store Capacity Indicator, Aquarium Automation, and more!

Microsoft MakeCode — MakeCode Arcade Game Garden Jam!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — NEW PRODUCT – ESP-PSRAM64H Chip – 64 Mbit Serial Pseudo SRAM – 3.3V 133 MHz

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



1 Comment

  1. Here’s my UV-C meter implementation. Used two sensors as these cheap $6 sensor boards from eBay were giving different results. The eBay sensors were giving more consistent results than Analog UV Light Sensor Breakout – GUVA-S12SDY (1918). I tested the unmodified 1918 boards with the ADS-1115 ADC as it has the resolution to measure low voltages and also has built in reference.
    The UV-C bulb is 3W (usually around 30% efficient) and the sensors are placed approx. 15 cm away at the middle. This work is based on the following article by Akiba.

    https://hackerfarm.jp/2020/03/nukemeter/

    My code,
    https://github.com/mpallewa/UV-C_meter_Trinket_M0

    Facebook post with output.

    https://www.facebook.com/methlal.pallewatta/posts/2726878874091208?notif_id=1588642505083181&notif_t=video_processed

Sorry, the comment form is closed at this time.