Leonhard Bandilla @lbandilla.bsky.social · 21/01/2026Made myself a second account where i post macro photography of whatever I think is worth showing, if anyone is interested you can check it out @lbmacro.bsky.social 000
Leonhard Bandilla @lbandilla.bsky.social · 27/09/2025There are so many budget friendly portable spectrometers available, I thought I'd post some photos of when I opened one, an hopocolor HPSC330, to replace the battery and recalibrate it afterwards. It seems to use a crosses Czerny-Turner geometry with a linear CCD 031
Leonhard Bandilla @lbandilla.bsky.social · 24/08/2025I figured out the tricks of how to cut thick boro now: * A tap wheel cutter with a lot of pressure * Take note of tin and air side, in my case I use the same side the factory score marks are * Tap the score both sides with a hammer/end of glass cutter * Be decisive when you break 000
Leonhard Bandilla @lbandilla.bsky.social · 17/08/2025Does anyone here know how to cut thick (6.5mm) borosilicate glass, especially cuts close to the edge? I've tried carbide and diamonds cutters, diamond with a heavy but smooth score seems to work best but I'm still having issues with it deviating to the side when close to an edge. 000
Leonhard Bandilla @lbandilla.bsky.social · 10/08/2025Have you ever had the need for a custom size glass filter or first surface mirror or need many at a low cost? You should know cutting them yourself from a larger stock is a lot cheaper and not nearly as hard as you'd think with a regular high quality glass cutter. 010
Leonhard Bandilla @lbandilla.bsky.social · 30/07/2025Building a fluorescence based piece of equipment on a budget? Here are my top 3 budget options, all very usable with different Pros/Cons: * Small narrow bandpass filters from Aliexpress, around 1€ for 8x8mm, decent OD, 20-80nm FWHM, angle sensitive. Ideal for non imaging purposes or shallow angles 100
Reposted by Leonhard Bandilla Karen James @kejames.bsky.social · 22/10/2023Science/academic peeps: there was a thread over at the other place (or maybe a blog post) a while back on how to write a good letter of rec for a prospective grad student. Anyone have a link handy or remember whose thread/post it was? Thanks! 🧪 1713
Leonhard Bandilla @lbandilla.bsky.social · 11/10/2023Does anyone know where to get the control software for the Crystal Technology AODS 20160? The one website I've found doesn't have the download link anyone and I can't find it anywhere. 000
Leonhard Bandilla @lbandilla.bsky.social · 09/10/2023I might be buying some rare earth oxides, including lanthanide oxides, from China soon. Just wondering if anyone needs anything in that direction, if so I can add it to my order. 000
Leonhard Bandilla @lbandilla.bsky.social · 05/10/2023Does anyone know a good way to detect a 100kHz signal? It is a sine wave with a level of +/-5V max usually in the mVs. I've tried the classic dual op amp/two diodes full wave precision rectifier and it works in an ideal situation but doesn't work IRL or with realistic simulations 000
Leonhard Bandilla @lbandilla.bsky.social · 09/09/2023Sometimes you do what you gotta do to get your measurements 010
Leonhard Bandilla @lbandilla.bsky.social · 01/09/2023Same thing on here, if you know someone you want to bring over to here, let me know, I got one code. 000
Leonhard Bandilla @lbandilla.bsky.social · 28/08/2023Sometimes you just don't get a lot of space to work with. There will be modules where the headers are, one Arduino Nano ESP32 and one ADS1259 ADC 090
