Ed Nisley's Blog: Shop notes, electronics, firmware, machinery, 3D printing, laser cuttery, and curiosities. Contents: 100% human thinking, 0% AI slop.
Word has it the 16 year old son was driving, with his father in the passenger seat, and managed to lose control without any of the usual causative factors. Everyone lived to tell the tale, which is a tribute to the contemporary auto tech we all take for granted.
Contrary to what we thought, they crashed around 8 pm and Central Hudson cut the power around midnight to repair the lines.
The cut is just in front of the PCB and went slowly to avoid clobbering the SMD resistors very near the edge.
The cataract turned out to be crud adhered to the LED lens:
Side Marker E – LED cataract
Brutal surgery removed the LED and installed a replacement:
Side Marker E – replacement LED
The PCB had two 150 Ω SMD resistors for use with 12-ish V automotive batteries. While I had the hood up, I removed one and shorted across its pads to make the LED work with the 6 V switched headlight supply from the Bafang motor.
In round numbers, 6 V minus 2.2 V forward drop divided by 150 Ω is about 25 mA. The original LED ran at 35-ish mA, but it’s close enough.
Glue the lens back in place:
Side Marker E – clamping case
The bubbly stuff is solid epoxy from the original assembly, which is why removing the PCB is not an option.
The new LED is no more off-center than any of the others:
Side Marker E – new LED – front
It does, however, sit much closer to the lens, due to the ring of plastic I cut away to get inside. As a result, the beam is mostly a single centered lobe with only hints of the five side lobes; there isn’t much waste light from the side of the LED into those facets.
We woke just after midnight to a completely dark and silent house, I padded around shutting of half a dozen UPS units under various desks and benches, and we eventually got back to sleep:
Rt 376 midnight crash – 2021-07-20 – status
According to our clocks, power actually returned about four hours later.
Our grocery ride the next morning went past the crash site:
Rt 376 midnight crash – 2021-07-20 – A
Tracks in the grass leading up to the smashed mailbox on our right suggest the driver didn’t quite make the very slight curve leading to the straight section.
It was garbage collection day and the debris field covered the entire front lawn:
Rt 376 midnight crash – 2021-07-20 – B
Both poles have rectangular reflectors, but the one on the smashed pole (on the left) shows the pole is maybe four feet shorter than it used to be.
We have no idea how a can of white paint got involved in the proceedings:
Quite some years ago, an errant driver demolished the front corner of that house and, more recently, the whole building burned out, so there may be a jinx on the site.
The Bafang battery charger uses an AC line cord “binocular” connector with what must be the weakest spring contacts ever made, which finally annoyed me enough to fix:
Bafang charger – AC line cord anchor
Also, the case now sports four thick fuzzy felt feet to keep it from sliding around quite so easily.
Another customer-does-the-last-ten-percent product …
The Smell of Molten Projects in the Morning 