 | | Re: Custom sensor current drain - use two sensor ports?
|
|
Hi Justin, (...) No, the internal circuis are more or less the same. (...) I don't think you could break something. But of course using two input ports is not so great... (...) You might try the kind of trick I used for my GP2D12 sensor ((URL) store (...) (19 years ago, 30-Jun-05, to lugnet.robotics.rcx)
|
| |
| | Re: Custom sensor current drain - use two sensor ports?
|
|
Maybe you could use one of the output ports. It might be worth running the sensor schematic by some of those on the board, while I understand the need to keep things under your hat - others may be able to suggest ways of bringing its consumption (...) (19 years ago, 30-Jun-05, to lugnet.robotics.rcx)
|
| |
| | Custom sensor current drain - use two sensor ports?
|
|
I'm building a custom active mindstorms sensor, but it requires 28mA to operate, while the sensor port only provides about 15mA. Any advice? (The mA requirements of the sensor cannot be halved - improvements may be possible, but it seems unlikely I (...) (19 years ago, 30-Jun-05, to lugnet.robotics.rcx)
|
| |
| | NQC FAQ updated
|
|
I have updated the NQC FAQ with a description of how to fix a USB Tower problem that many users have experienced when downloading a program via NQC. Many users have reported that they get a "Compile Failed no (or invalid) reply from RCX" error when (...) (19 years ago, 29-Jun-05, to lugnet.robotics.rcx.nqc)
|
| |
| | Re: lego light sensor's capability of distinguishing colors
|
|
(...) Dang. I just do not have enough on-line hours to discover how many times I can reinvent the wheel ;-). Thanks for the pointer, Steve, and Philo that is a nice piece of work! (19 years ago, 28-Jun-05, to lugnet.robotics.rcx, lugnet.robotics.rcx.robolab)
|
| |
| | Re: lego light sensor's capability of distinguishing colors
|
|
On Tue, June 28, 2005 6:50 am, Brian Davis said: (...) That sounds like a really smart idea. At least, that's what I thought when Philo did it: (URL) he just said... (URL) (19 years ago, 28-Jun-05, to lugnet.robotics.rcx, lugnet.robotics.rcx.robolab)
|
| |
| | Re: lego light sensor's capability of distinguishing colors
|
|
(...) How about one sensor with a color wheel the RCX can drive (this is how just about all NASA spacecraft take those beautiful pictures)? Another option that might work (read: I've not tested this at all) is using more than one color of light to (...) (19 years ago, 28-Jun-05, to lugnet.robotics.rcx, lugnet.robotics.rcx.robolab)
|
| |
| | Re: lego light sensor's capability of distinguishing colors
|
|
(...) The problem is that LEGO light sensor is basically color blind, all you get is different reflectivity levels. Take care of dark shiny surfaces that can reflect as much as lighter ones (try to place the sensor at an angle to avoid direct (...) (19 years ago, 28-Jun-05, to lugnet.robotics.rcx, lugnet.robotics.rcx.robolab)
|
| |
| | Re: lego light sensor's capability of distinguishing colors
|
|
(...) Alone - it is not very good. I have seen a custom sensor with three light sensitive elements and filters. you might be able to build a crude one with one light sensor, one motor(slowed down with worm gear or the micromotor), a wedge belt (...) (19 years ago, 28-Jun-05, to lugnet.robotics.rcx, lugnet.robotics.rcx.robolab)
|
| |
| | Re: lego light sensor's capability of distinguishing colors
|
|
(...) My guess is you would have to use colour filters to get reasonable results. I did toy with that idea for doing a colour photocopier once, but haven't got around to actually testing it yet. The downside is a 3-colour scanner would either use 3 (...) (19 years ago, 27-Jun-05, to lugnet.robotics.rcx, lugnet.robotics.rcx.robolab)
|
