equipment – What is the purpose of the engineering book?

One of my players participating in the Warhammer Fantasy RPG creates an engineer. He takes an engineering book (trapping) and asks me if there is any utility for this article (aside from the role play).

I did not find any information about it. The rulebook is great, so I may have missed the relevant part. When I asked my friends, they were not able to know if there were rules about it.

  • Maybe it behaves like magician's books?
  • If the character did not spend XP on a specific recipe, should he use his engineering book?
  • Maybe it reduces the difficulty of making tools or weapons?

Equipment protection – Will the camera condense in cold weather if it is never removed from the bag?

Personally, I have never taken any action to protect the camera from condensation, and have had the same camera for about 10 years without any sign of damage (although it it's a 7D that is a pretty solid camera). The only precaution to take is that I do not change lenses immediately after entering the camera.

In addition, leaving the camera in the bag will provide some form of protection. Although not as effective as a sealed plastic bag, this might be enough.

Condensation occurs when you bring a cold object into a warm environment. People who wear glasses notice it every time they enter the cold.

The reason is that hot air allows a higher humidity, that is to say that it can contain more molecules of water (vapor) than cold air. Thus, when the temperature suddenly drops around the cold object, the water molecules form water droplets (vapor) that condense on the object.

Therefore, the perfect time to loop the camera is when you are done taking your photos for the day (do not forget to remove the memory card first, if you want to process the pictures as soon as you are inside).

Place the camera in a plastic bag on the inside produces the opposite effect. You capture very humid air inside the bag and when you take it outside, and as the temperature drops, the water condenses inside the bag.

I think it's a bad idea to leave the camera in a plastic bag anytime, because any condensation that would have been trapped inside the bag will not escape it. .

equipment identification – Can any one identify this camera with dual lens Reflex 1940 (ish)?

The photo was probably taken in the 40s and the photographer was relatively easy. Can any one identify this specific camera (and the flash is not permanently connected)?

The average formats Rolleiflex, Voigtlander, Reflekta, Aires Automat, Kinaflex and Rolleicord are similar but not alike. I wonder if anyone could know, or the best place to look? Currently, reverse engineering of images in search engines and search for popular cameras at this time and endless scrolling, but so far no luck.


equipment protection – Are microwave ovens dangerous for digital cameras?

No, there is no danger. All EM fields on the outside the microwaves are very weak. There is no danger or risk.

Microwaves look like visible light waves, with the exception of the larger ones (the "micro" is in comparison with other radio waves). Both are non-ionizing radiation; they do not have the energy needed to move the electrons in the atoms. And, just like visible light, microwave radiation follows the law of inverse squares and decreases dramatically as you move away from it.

Microwaves use exactly the same radio waves as Wi-Fi, except with higher power and concentration. However, the microwave box keeps this confined. In the United States, federal regulations limit microwave leakage to 5 milliwatts per square centimeter to 5 centimeters from the box for microwave leakage throughout the life of the device (ie not only if they are new). For comparison, the FCC limits WiFi routers to 1,000 mW (or, you know, one watt). And you should not worry either.

equipment – Pathfinder: Creating an Unusual Vehicle (Medium)

Specific questions

  1. Are there mechanisms for custom vehicles in the paizo rules?

  2. Are there vehicles of average size or inferior in the rules of paizo?

  3. Are there any better rules for driving / driving outside Ultimate Combat?

  4. Are there mechanisms to disguise a vehicle / object that would make sharing one disguise with another explicitly obey other rules or potentially invalid?

I am looking for advice on how to further align the craft vehicle below on the mechanics and rules contained in official documents. I give too much detail (probably) in the hope that it helps to solve the problems that I did not explicitly ask for.

Recognizing the other threads of the Pathfinder vehicle, reading me was beneficial.

The rules on harmful vehicles have been discussed here.
Additional vehicles related to the high seas have been discussed here.
Some 3.5th details of the vehicle have been brought here.

All three were insightful, although they did not answer my questions above.

A vehicle of unusual size (and design)

I try to answer my own rules question the best I can, but I want help to make sure everything is fine.

I'm specifically trying to make a vehicle that inserts into a square and is of average size.

Any vehicle that occupies 2 or more squares is already covered by the rules. Nothing goes in average. The rules also provide details on how a vehicle can be modified and the statistics to follow, but do not explicitly specify how the mechanisms could be combined. Here is my best attempt to achieve all these details.

Since something occupying 1 square is usually of medium size or smaller, I treat a 1-car vehicle as being of medium size. I would like that there is explicitly a Medium vehicle to refer to in the rules, but I have not seen one.

But why?

I've designed a vehicle inspired by three goblins who try to slip into a trench coat. You can judge me.

The base cost is assumed to be 250 gp, based on the costs incorporated into other vehicles for similar functionality, including Smuggler's medium-efficiency wagon. I would like something more reliable as a measure. There was no way to be sure that it was entirely correct.

The upgraded version I've included has a doubled cost based on a high concealment smuggler vehicle. The upgraded vehicle is also made from Mithral, ​​and its cost is based on the cost of +9,000 gp for heavy armor. There were no statistics of "weight" on vehicles to do it per pound.

Another rule of interest: the propulsion of creatures can be in a team. I found no other rule referring to the concept of teams, to check its effectiveness to push a vehicle.

Medium land vehicle

Squares 1 (5 feet by 5 feet, 6 feet high); Cost 250 gp (basic), 9,500 gp (improved)


AC ten; Hardness 0 (base), AC ten; Hardness 15 (improved)

(The basic AC power is based on size and does not take into account the driver's skills Hardness is inherited from the material.)

hp 15 (7) (base), 30 (14) (enhanced) (Determined by size and material)

Base Save 0 (This bonus was entirely random in the samples, so I left it alone)

Defensive abilities bouncing, disguised?, compact


Maximum speed 60 feet (muscle); Acceleration 15 feet (muscle)
(When examining existing vehicles, all vehicles pushed with a crew or more dedicated to moving by square of 1 had these statistics)

CMB 0; CMD ten (This is based on the size of the vehicle)

Offensive capabilities armed, about face

The description

It appears to be a medium-sized humanoid, shaped like a loose barrel, covered with a long dress and a broad-brimmed hat that obscures them from top to bottom. The improved versions are more humanoid convincingly, but both versions move abnormally as if they were rolling on wheels and small sets of feet. The creatures inside the combination gain either full coverage (the crew) or a blanket (the driver).

Propulsion muscle (pushed; 2 small creature)

Driving control Occupation (driver)

Facing the front The last direction of the vehicle

Driving device a single lever combined with leaning to tilt the vehicle

Driving Space the upper deck of space; the lever extends across all decks

Crew 2

The bridges 3

Bounce (Ex) The combination of people is designed to be elastic and easy to maneuver, which deprives it of the strength and impact of a standard vehicle. The combination of people is treated as a creature if it is touched by another vehicle and can not perform vehicle maneuvers. The combination of people can be targeted by any maneuver that forces the movement as if it were a creature and that accelerates or decelerates according to the movement inflicted in the chosen direction.

Disguised? (Ex): The suit is not everything, it seems, and this gives it some advantages. The combination of people can be used as part of an average size disguise for the driver, thus canceling the size penalty on the check. The combination of people may also attempt stealth checks, using the stealthy skill of the driver. Whenever the person agrees moves, everyone nearby gets a +10 to the perception to overcome the disguise or stealth test. This bonus is reduced to +5 for the upgraded version.

Compact (Ex): The combination of people is designed for three small creatures in cramped conditions. A medium-sized or larger creature can not fit inside this vehicle to use it. If a creature inside the vehicle suddenly increases in size, the vehicle disintegrates and frees the crew and the driver in a three-seater line. If this happens, it takes ten minutes to reassemble the vehicle.

Armed (Ex): The character combination has two arm-shaped appendages that can be equipped with a one-handed melee weapon and a shield, or two one-handed melee weapons. If a shield is awarded, the shield bonuses apply to the vehicle. If one or more weapons are awarded, the driver may attempt a special attack maneuver as a standard action. All adjacent creatures of medium size or larger must perform reflex backup against (ranks 10 + 1/2 Profession (driver) + Wis) or take damage from all weapons held. The weapon upgrades do not increase the CD of this attack, but apply to all damage dealt.

About Face (Ex): The driver can change the vehicle's lining in turn as part of a accelerate check. This does not change the direction in which the vehicle was moving previously and tries to accelerate in the opposite direction of the current movement is treated as a slow down check. Because of the unorthodox way in which a suit combination can rotate and change the direction of the body, it receives +4 to AC at momentum attacks triggered by movement.

DIY – Achieve more granular control of interior lighting with minimal equipment

Some lighting fixtures can adjust the level of lighting with the help of a gauge, but I rent and the utilities are out of my control.

Nowadays, there are many options for intelligent lighting (Philips Hue, for example), which offer gradation levels via an application on your phone.

my idea was to simulate a transparent umbrella by sticking white paper on the lights (they are flat ceiling lights that do not protrude)

You would be better with a thin sheet. Whatever you do, be sure not to risk a fire. Switch to effective LEDs and make sure the airflow is adequate. Instead of completely covering the light at the ceiling level, place the canvas at least a few centimeters away to allow air to circulate.

The light seems very hard and it shows in the photos.

A straight bulb is a point source of light or a hard light. This is due to the fact that no part of the light is scattered, but that it comes essentially from the same angle. You need modifiers to disperse the light.

If I turn on the lights of the adjacent room, the result is too dark

Then your exposure setting is incorrect. What you probably want to say is that there is not enough light to allow shutter speeds that can be held by hand. Well, get a tripod. It takes a little light for a photo and normal indoor light bulbs are not enough. The interior lighting is good enough for us, but it's considered a difficult lighting for photography simply because of the lack light.

Although it is certainly not prohibitively expensive, it requires a little effort (the ceiling is a little high and I am a little short).

Your message has just become very lazy. Get a ladder.

Everything you will do in DIY lighting will require more effort than sticking a sheet to the ceiling. Are you sure you really want to do that?

Are there any other DIY methods to better control the home lighting that I can use before I get real equipment?

At the end of the day, you are the photographer and the lighting depends on you. You can make do with home-made table lamps and sheaths / light boxes for smaller items – but the trade-off will be the need to use a tripod and a difficult time to control your ratios (unless you're not sure what you're looking for). Have variable intensity bulbs).

At some point, if you want your studio lighting to go up, you need to get a flash or a quick flash.

mining equipment – hash board problem in Dragonmint T1

-I've cleaned the table of 3 hash of dragonmint T1 using the fan yesterday.
so I assembled them



When I turned on the power, the light of 3 hash boards is on, but after a few seconds, only one hash board is working and two of them are not working!
and I can not that two hash cards in the device setting. !!!


"What is the problem??"
what should I do??
Thank you

recommended equipment – What camera looks like a Stylus Epic / mju ii, but with manual override iso / DX

Try to think of a camera with the following advantages of mju ii:

  • Small size
  • Autofocus
  • Built-in flash
  • IQ "legendary"

but with a way to set ISO, or failing that, some exposure compensation stops.

The context:

  • My 10 years old uses this camera
  • Purple Lomo movie without DX encoding. Also chromogenic N / W at a speed other than that of the box.
  • ISO100 is not really up to the task of late October in the UK (Sunny f / 5.6?)

I know of solutions involving aluminum foil and insulation tape, but they are not really friendly to parents, in that parents need to remember to do it every time.

So, I would really like to solve this problem with a new camera and I think I would be willing to sacrifice a "legendary" IQ to do it.

No suggestion?

recommended equipment – Choose between the Canon SL3 and the T7i

The Canon SL3 came out this year and has some improvements over the T7i, but it also has some setbacks.

The biggest differences I could find are the image processor, the battery life and the auto focus. The SL3 features a newer DIGIC 8 image processor than the DIGIC 7 on the T7i. The battery life of the SL3 is higher than that of the T7i, 1070 shots against 600 shots (under the same conditions). There is a trap though. The T7i has 45 autofocus points crossed, while the SL3 has only 9 standard focus points (one of them being cross type). The SL3, however, has a two-pixel autofocus, but it only works in live view.

This is going to be my first camera. I would like to be able to photograph anything, from portraits to kids running (hence my worry about autofocus) and sports from time to time. Live viewing can be a great way to start shooting, but I feel like I will probably not use the viewfinder later, which will make the dual-pixel autofocus unusable.

The slight difference in frame rate, on the SL3 and 6 on the T7i, does not bother me. I will also mainly do photography, but when I shoot a video, it will only be in 1080p because of the framing factor and the lack of autofocus in 4K.

Two specific things I would like to know:

  • How does auto focus on the SL3 compare to that on the T7i (for photos, with and without live view and for video)?
  • What difference does the new image processor make (in low light)?

How do these two cameras compare? Is there a difference in overall picture quality? Are there any other differences that I have missed? Which one would be the right choice for me?

I will shoot in RAW.

python – OSS test framework for inspection / qualification of equipment

Given the large number of OSS test solutions, I (always) find that I am looking for a framework for free software testing software to determine if it meets quality standards (for example, qualification tests). The mantra common to many test frame pages seems to be "going with an existing solution rather than rolling yourself," but I'm not sure if a viable solution exists in my case (prove me if you like).

In short, these large custom printed circuit boards incorporate 1G Ethernet jacks and high quality audio jacks for a proprietary solution. In order to test these devices, we must:

  • For network / Ethernet links:
    • Ask the "sending side" to generate PRBS / BERT models and the "receiving side" to confirm that it can converge / lock the signal / pattern.
      • Also ask the "receiving side" to perform electrical eye diagrams calculations
  • For audio links:
    • Ask the "sending side" to generate specific analog audio patterns, which the receiving side should "read" and "record" (ie recognize as "standard test pattern").
  • Also do simple on / off tests for various GPIO, SPI and other links.
  • I must also run arbitrary data processing libraries and compare the performance metrics they spit in a disk file.

We have a whole series of test scripts that can test all these elements using drivers that we write internally (that is, to ensure that the manufacturer has built these PCBs correctly), but they have been written by several different authors. do not adopt current or standardized output formats, nor behaviors, and do not make it easy to provide a bird's – eye summary to determine if a PCB is "good" or not.

I need to find a tool / framework that can interface with the low-level drivers used for these tests (written in C, C ++, Python, and Go), and provide a way to introduce users to a common scripting language (simple). so that they can write simplified tests that call these drivers (Python is preferred), collect and catalog data, generate test reports, perform multiple iterations of these tests (that is, for stress tests)etc.

Does such a tool (OSS) exist?

I looked at the robot framework (mainly because of its maturity and Python writing), but the project summary and the examples do not give me enough information to know if I could or not benefit. Looks like I should write REST / HTTP interfaces for all my H / W tests if I want to use one of these frameworks for automated testing, cataloging results, reporting, and so on. I would also like to test other arbitrary / abstract parts of the system, such as software performance metrics (which have not yet been defined or provided).

How to better choose a tool capable of performing arbitrary software / hardware quality control tests?

  • Simple scripting language that can be used to define individual tests that use more complex drivers / scripts / applications / (etc.). do the "lifting of heavy loads". Python is preferred if possible.
  • OSS (ie MIT / BSD, no broadcast or commercial license).
  • Linux support (Windows is a good option).
  • How to generate a set of reports (that is, to compare different batches of PCBs).

Thank you.