All posts by Jeff

Electrical engineer, tinkerer, maker.

OLED display, WiFi interface, LiPo and battery voltage monitoring for the MightyOhm Geiger Counter

Twitter user @joeyhagedorn recently posted photos of his hacked MightyOhm Geiger Counter kit. He added an OLED display from Adafruit, a LiPo battery, Particle Argon WiFi interface, and a battery monitoring circuit that uses an AD8244 high impedance buffer to avoid loading down the HV supply.

Interested in building your own open source Geiger counter kit? Geiger Counter kits are in stock and shipping now.

Geiger Counter quarantine sale extended (again) – more details below

Update: As of July 1st, 2020 the sale is officially over! A huge thank you to everyone who placed an order during the sale, you helped keep my mind off of the current crisis. I hope you enjoyed building your kit! Also, a huge thank you to everyone who has helped support MightyOhm since it began in 2008! I am thankful for each and every one of you. Stay safe!

Here’s the original post:

Well, here we are. It’s June 1st, 2020, and like most folks in the Seattle area, I’ve been stuck at home for months, making few cautious trips out into the world to get some exercise, go to the post office and pick up groceries. Most folks I encounter outside are wearing masks. This is the new normal around here.

Most of us here in Seattle were cautiously optimistic that our city would start to re-open on June 1st. However, over the weekend it became clear that this won’t happen for at least a few more weeks. This time, there’s no specific date to look forward to.

As a result of the ongoing stay at home order in Seattle and various other parts of the US and the world, I’m extending the quarantine sale again.

I know that there are still a lot of folks who are stuck at home, looking for opportunities for personal growth or just a way to pass the time. This is certainly true for me – over the past few weeks I’ve been taking online 3D modeling courses and just passed the Solidworks CSWA exam last week (CSWP here I come!) My goal is to continue to make discounted Geiger Counter Kits available until we start to see the light at the end of the tunnel.

There is a catch, however. My inventory of Geiger counter tubes is very limited. Tubes have become more difficult to source this year, and prices have gone up. Once I sell out of my existing inventory of tubes, the sale will end. If you are interested in taking advantage of the sale, please order soon or you might miss out.

You can place an order here: MightyOhm Geiger Counter Kits

Yes, kits are in stock and shipping as usual.

I’ve received a number of inquiries over the past several days about the status of kit sales.

Due to COVID-19, Washington state is in lockdown.

However, since I operate my small business out of my home, MightyOhm is still up and running.

USPS is still collecting mail and kits are shipping as usual. One of the nice things about my kits is that they fit in a small padded envelope or a USPS small flat rate box, which can be mailed at any post office collection box. I pass by several USPS boxes on my frequent walks (following social distance guidelines), so I’m able to mail packages per usual.

Geiger counter kits are still on sale. The sale has been extended through June.