Good to know. It’s definitely possible, even likely, that I got the switch too hot during soldering, I’m not a very good solderer. I think the sane thing to do is to order another switch so I don’t melt my only remaining one and end up with a flashlight I can’t use. Simon’s accessories are very reasonably priced. Thanks for the reply, and for all the great reviews, I enjoy them thoroughly.
It may be because the VF value of multiple LEDs is low and the driver is not compatible. This is just my guess. I am sending the driver to the manufacturer to find out the reason.
Pls PM your aliexpress ID ,i will send one new driver to you when it’s fixed
I know this is from a while back but I built a battery sized tube with a 2200uf capacitor in it to run in place of the battery. I was able to run at almost 2 Amps on the USB with the capacitor in place of the battery.
I have OHSP350C (the basic model without software). It does not give TM-30 data on screen, but it is trivial to export the raw spectra to a PC and import to Color Calculator. You can then generate full TM-30 reports.
Unless you need the expanded spectrum range or TM-30 data on-device, I’d recommend going with the base model since it is significantly less expensive than the other options.
Oh, awesome. So as the lighting professional that you are, any complaints or shortcomings? Those two features aren’t super important to me but the flicker is, a little bit. This will see double duty as hobby and at work (and not a whole lot for either one). Flicker would be nice but I could probably get them to foot the bill for something, maybe subsidize a small portion of this purchase.
trivial as in “I decoded the protocol”, or as in “attach a USB cable, mount as a disk, and read the data”, or similar method?
[ as you could do with android phones until google switched to a media protocol at which point I switched to transferring data using SSHelper as in FreeBSD that protocol didn’t work at all at the time of that switch ]
So the data for the full TM-30 is all really there on the cheapest device and not dummy data?
I’d be interested also in: Can you do measurements of the exact frequency of red light, e.g. that it is 660 nm, or 670 nm etc.?
Perhaps a thread on recent devices such as the oppo, hopoocolor, versions of these devices, features that you can expect (including what data you can extract that you can analyse on a PC) and how to transfer data, would be useful.
I’m not an industry professional, just a hobbyist. I don’t have any complaints with the device. It’s robustly built and can boot and take measurements quickly (a couple of seconds). It provides a multitude of information on the screen, such as spectrum plot (380-780nm), CIE1931 plot, CCT, duv, Ra and R1-15, x,y/u,v coords, intensity (lux), and more.
Unfortunately, it can’t do flicker measurements. I believe one of the more expensive models can do this. You could also pick up an Opple; those are pretty good at flicker measurements and the device is very compact and inexpensive.
It’s quite easy. You can export raw spectra data to a CSV file on the device. Simply plug the device into a PC and copy/paste the data into a .txt file. The .txt file can be imported into Color Calculator.
Yes, all the data needed for a full TM-30 report is measured with the Hopoocolor. The 350C generates spectral data in 1nm increments from 380nm to 780nm. It is a true spectrometer.
You can view the spectrum as a graphic on the device (to, for example, compare relative intensity at different wavelengths as you mentioned, with a cursor to indicate the exact wavelength), but if you import the raw data to Color Calculator, it can be viewed and analyzed in greater detail.
