Replied to Small UPS for a remote gateway, or does Hermetry Edge buffering make it unnecessary?

That cleared up my confusion, thanks Emily. Ordered a 12 V DC UPS module with a relay output and wired it to a spare…

1 month, 3 weeks ago

Started Small UPS for a remote gateway, or does Hermetry Edge buffering make it unnecessary?

Software person here, so the battery side is new to me. We have a gateway in an unmanned pump hut that reads 4 meters…

2 months ago

Replied to Building a mains-powered gas monitor box for a UK boiler room: which rules apply?

That makes the build much simpler. Revised design: Mean Well DIN-rail PSU fitted by the client's electrician, my box is 5V only, the MQ-4…

3 months ago

Replied to Building a mains-powered gas monitor box for a UK boiler room: which rules apply?

No fuse, no. And yes the mains traces are maybe 3 mm from the 5V side.

3 months, 1 week ago

Started Building a mains-powered gas monitor box for a UK boiler room: which rules apply?

Mostly a lurker, I do backend work for an energy services firm. One of our UK clients wants us to monitor a plant room…

3 months, 2 weeks ago

Replied to Wiring Grove sensors straight to a board, no Base Shield

If you want lux later, a BH1750 on I2C is cheap and the same Grove wiring works.

9 months, 3 weeks ago

Replied to Counting vends on the office drinks machine: send each vend or a running total?

Switched to running totals every 5 min and "increase" with 1h buckets. Unplugged it twice on purpose and the chart didn't flinch. Jason was…

10 months, 3 weeks ago

Replied to Counting vends on the office drinks machine: send each vend or a running total?

It starts at zero again. I hadn't thought about that. No MDB on this one, I checked, it's older than me.

10 months, 3 weeks ago