I recently purchased the Geiger counter shield from you guys, and it has been working happily until today, whenever I turned it on it starts chirping away happily once or twice every second or two, but then after anywhere from 20-40 seconds, it starts screeching and saying it's picking up over 250μSv/h and 30,000CPM. That doesn't seem right/safe to me. Has anyone else experienced this? Also, is there a way to programmatically turn off the piezo buzzer whenever it receives a pulse?
Thanks in advance.