I've bought this miniature voltage tester in 2001 for a equivalent of $1. Similar tool is now available at dealextreme for $4.30.
It has flat screwdriver head, but it is quite fragile and I believe it would broke quickly if high torque would be applied, so you will need real screwdriver anyway.
It works in a similar way to classic neon lamp voltage indicator, but instead of single finger contact it has two, one for direct measuring and one for detecting voltage without physical contact. It is not as sensitive as battery powered indicators, finding wires in the wall is rather difficult if not impossible.
Vintage scientific calculator made in USSR with vacuum fluorescent display (VFD). Powered by 3xAA or external adapter.
VFD up close - it's little dark in daylight (may be effect of limited VFD lifetime), but it is very impressive that this calculator is still working.
Calculator uses only single integrated circuit which is again quite impressive - this IC contains both logic circuits and high voltage VDF driver.
Cheap (less than $1) solar powered garden lamp. As many other similar products calling it a light source is questionable - single LED inside has 17 mW, it has small light angle and it's pointed downwards, so significant amount of light is wasted. It may not like heavy rain also as it offers IP43 protection only. I was aware of it, but I bought it for its solar battery only.
All tests were made using same card reader.
Kingston 128 MB
Kingston 2 GB
Goodram 8 GB - dissapointing when comparing to manufacturer claims: 20 MB/s for both reading and writing. In test: slower than cheap 2GB Kingston except for sequential writing.
Update: it looks that measured speed is in fact similar to declared but the problem lies elsewhere - Goodram was making (for a short time?) cards named in the same way based on SLC memories that got overall good reception (positive press reviews). They were rebranded Toshiba Professional series most likely. Then Goodram started to distribute much worse MLC memories named in the same way. This is definitely unfair practice.
Update 2. This card was proven to be unreliable. It passed initial test with H2testw, but then it lost data when used in my camera. It failed to format several times giving errors. And then after successful formatting and some time it failed again proving to be worthless. Unfortunately it was bought online and trying to replace it (shipping) would be more expensive then buying a new one.
Product number from blister: SDC8GHC10PGRR9.
Kingston 8GB, micro SD, class 4.
4 GB version gives identical results.
Posted by T.O. at 22:40