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You add up a column, the total looks too small, and you start re-adding the figures one by one to find the mistake. Often there is no arithmetic mistake at all. Some of the "numbers" are text, usually because they…
Lists that come from forms, emails or other people's spreadsheets rarely arrive clean. There are double spaces between words, a stray space at the end, dates written with dots, names spread over four cells when you need them in one.
A new benchmark shows the best AI agents can solve theoretical physics calculations as accurately as leading specialists in each subfield. The researchers behind it say a missing sense of "taste" is one reason breakthroughs haven't followed yet. The team…
The R60ABD1 is a 60 GHz sleep and breathing radar module. It reports presence, breathing rate, sleep state and sleep quality over a 3.3 V TTL UART using the SIP-S V1.0 protocol — and it has no Wi-Fi and no MQTT stack. To get that…
The gateway guide wires the R60ABD1 60 GHz sleep/breathing radar to an ESP32-S3 and publishes its frames to MQTT. This article is the consume half: pull that MQTT feed into Home Assistant, expose breathing rate and sleep state as entities, put them…
An agent gets an error back from a tool call. Should it try again? Most agent loops answer that with one rule: on error, retry a few times with backoff. I think that rule is wrong for any tool that…
I built a free pinyin chart last month. Before I wrote a single line of code, I clicked through every free chart I could find — partly to steal good ideas, partly to make sure I wasn't solving a problem that…
Benton Harbor Area Schools Interim Superintendent Keith Sanders says the district is working to improve student achievement following low SAT rankings noted in a recent MLive report. The report found that Benton Harbor Area Schools had the lowest SAT rankings…
A while ago, I published a post about Boolflow — a free browser-based digital logic simulator built for learning Boolean algebra and experimenting with digital circuits directly in the browser. Since then, I have significantly updated the project. This is not…
In my last post I planned a feature, and executing it turned up a bug: the simulator could not hold a bit with two gates. The first circuit in every digital logic course, an SR latch from two cross-coupled NOR…