Mr Blinky

The Radiacode website has a great isotope spectrum library: https://www.radiacode.com/spectrum-isotopes-library All of the spectrums are from the mobile app for the Radiacode so don't have a massive amount of detail, but there is some great information for each isotope, such as half life, emission lines and a decent description of where they may be detected. Archived from radmon.org - originally posted 12/12/2024

For all of the posts in the Negative Ion Energy Ju-Ju series, click here. A radmon.org user arranged some stickers in a certain way around their tube they managed to get around 4300 CPM. So I tried too. I managed to arrange nine of my stickers in a similar arrangement as Mercator and I get around 4200 cpm also! It peaked at about 4218, but is mainly around 4100. I'm impressed for some cheap stickers! Excellent check sources. 😄 nzoomed, over on radmon.org, asked about a gamma spectrum, to try and identify the radioactive compound in these items. I only have a Radiacode 101, which whilst it

SI-19BG (M) | SI19BGM | СИ19БГМ - Tiny end-window Geiger Muller Tube I received this today after waiting for it to arrive for a couple of weeks. Purchased from Ukraine (via eBay). Not only is it tiny, it is the most expensive GM tube I have bought yet per gram of weight! And it appears to work okay. Sensitive to Gamma and Beta. This tube really is remarkably small. The end window must be no larger than 6mm diameter and the whole thing is only 20mm in length. It's not sensitive and for the couple of minutes I had it on test, the background was about 4cpm and it went nuts with Am-241 being held

For all of the posts in the Negative Ion Energy Ju-Ju series, click here. Latest Round Of Negative Ion Scalar Energy Ju-Ju - Moar stickers! If you haven't read my previous posts on these kinds of Ju-Ju items you can do here, here, here and here. This will probably be the last round of Negative Ion Scalar Energy Ju-Ju things from China, unless I find more unique Ju-Ju stuff. More stickers this time, some similar to what I have already shown. Most of these are pretty boring and not very active, except for one lot of stickers. I think I have practically bought every type of this nonsense so far.

*** Please note: Working with lithium batteries can potentially be hazardous. Damaging the battery can potentially cause fire or explosion. Learn and understand the risks before performing such a repair. *** I had to replace the battery in my Radiacode 101 as it was becoming potentially dangerous. I noticed the main button on the Radiacode wasn't pressing in properly and was sticking at times, so I popped the unit open and found the battery had expanded and was putting pressure on the circuit board, and thus making the button tight. The battery hadn't expanded like other LiPo's I have had,

For all of the posts in the Negative Ion Energy Ju-Ju series, click here. This is the latest update with more Thorium negative ion scalar energy anti-radiation radioactive Ju-Ju for shits and giggles. 😄 Some laughs and scary thoughts pursue! 😯 Somewhat of a sticker bonanza this time, along with some quantum Ju-Ju wearables. We have round stickers and rectangle ones. Different colours and finishes, and all radiating Thorium Ju-Ju goodness! This will probably be my last post on Ju-Ju radioactive stuff as I think I have exhausted the types that are available, without paying too much. There are

Some time ago I threw together (what I thought was) a 1000:1 voltage divider for measuring the HV on Geiger counters. This consisted of a Dale 1% 1G ohm resistor (R1) mounted all nice in a box with big chunky gold banana connectors and another quality 1% 1M ohm resistor (R2) connected to a banana socket and then a bunch of croc leads flying about. It worked, but wasn't right. I hadn't accounted for the multimeter's own internal resistance (known as a burden on a circuit). I'm pretty sure my multimeter is a 20M ohm resistance, or thereabouts, so that made R2 actually 950K ohm when the meter

Update #5 Progress!!! 😊 MAX7219 LED controller (for common-cathode LEDs) running common-anode 7 segment displays. The brightness isn't quite what I could like, but it should be fine. I may be able to tweak it a little, but the MAX7219 wasn't really designed for running common-anode, so if not, I can't complain. Now to make up a little daughter board with the MAX7219 and try it out for fitment/space etc. If all is good, then I'll make some more and get the display boards retrofitted with the new controllers. This IC will daisy chain too, but I might have to get a little clever with the code as

This time I get out my I Never Won A Blue Peter Badge badge, a stack of foam board, some sticky tape, more sticky tape, some hot glue, some recycled fabric insulation stuff from a dishwasher and knocked together a box for insulating the heat absorbing temp sensor. Not much really to say about the construction. I think the pictures say it all. This is the end product and really does appear to work well. It managed to record a temperature of just above 70°C a few days ago. 😯 That's about 20°C more than before it was in the insulated box. It still needs some small tweaking as when I open my

Update #4 My head still hurts.... But I am making progress. I have added an RTC ( DS3231 ), a micro SD card and a GPS receiver ( NEO-6M GPS Module ). The RTC is just for keeping time and date. The RTC will be set every hour, or 24, or whenever, to the GPS time. I need to have a think about UTC/BST for recording and displaying. Do I record everything in UTC and have adjustment on display, or do I set the RTC twice a year into UTC/BST and record using UTC/BST. The latter would be the most beneficial for displaying and graph creation, but with a caveat that 1 hour of readings will get screwed up