Fritzing Parts – Seventh Set

To mark the occasion of 50,000 downloads of parts from the previous six sets, I’ve made a seventh set of Fritzing parts. The first set of parts, along with details about Fritzing and about part creation, can be found here. All sets can be found under the ‘fritzing’ tag here. As with the previous sets, these are generally parts that I’ve needed for my own projects.

The group of Fritzing parts.

The group of Fritzing parts.

 

The group of Fritzing parts, numbered.

The group of Fritzing parts, numbered.

The parts are as follows:

  1. LMD18200T
  2. TCS3200D
  3. Nano Pi NEO
  4. RCWL-0516
  5. CCS811
  6. AK-SI7021
  7. TEMT6000
  8. MyoWare LED Shield
  9. RFP-611
  10. RFP-602

Since the Fritzing parts repository (code.google.com/p/fritzing/issues/detail?id=2753) is no longer available for sharing parts, they will be posted here instead.   If you’d like to make a request for the next set, please leave the following details in the comment section below:

  1. The name of the board/module
  2. The outside dimensions in millimeters
  3. Details about each pin (i.e. name — e.g. VCC, GND, SDA)
  4. An image of it at a reasonable resolution (and as close to parallel to the image plane as possible)

Bronica ETRSi Battery Compartment Cover Replacement Part

The Bronica ETR series were 6×4.5 film SLR medium format cameras manufactured by Zenza Bronica in Japan from 1976 to 2004. The series consisted of the original ETR (January 1976), the ETRC (October 1977), the ETRS (January 1979), the ETR-C (January 1979), modified ETRS (July 1982), and the ETRSi (October 1989) (Gonzalez, 2016). Production of the ETRSi ended in December 2004; full technical support for the ETRSi ended seven years later, in December 2011.

The ETRSi incorporated a number of changes over the preceding ETRS, namely improvements in the focusing screens, shutter speed dial, and in sound and light-deadening material in the interior of the camera (Gonzalez, 2016). One other relevant change was the enlargement of the battery cover over that of the ETRS (#2912) to that of the SQ-A (#1912) (Gonzalez, 2016).

The battery cover in place on the bottom of the Bronica ETRSi

The battery cover in place on the bottom of the Bronica ETRSi

As is often the case, various parts of such a camera system can go missing – the eyepiece, the winding lever, the battery cover, and so forth. In the case of the battery cover, replacements are hard to find. The only other (efficient) way to obtain a replacement battery cover would be to buy a broken ETRSi camera body. Though this is useful from a long-term repair perspective, it is not entirely feasible if just the battery cover is needed. The intent here was to create a 3D model of a ETRSi battery cover in order to allow for 3D printing of replacements.

FreeCAD screenshot of battery cover 3D model

FreeCAD screenshot of battery cover 3D model

Using the original part as a guide, I constructed a 3D model using FreeCAD. I decided to keep it close to the original part in terms of design. That said, the grip/groove pattern was changed slightly, in order to make it easier to shift over. Because of the lack of a finish on the replacement battery cover, it is easier to remove from the camera body, as compared to the original battery cover (due to the rougher, as opposed to smooth, surface finish).

The part was test printed by Sculpteo (Paris, France). The total cost, with shipping, ended up being €6.00 (~$9.00 CAD; ~$7.25 USD).

The materials and related characteristics were:

Process: Multijet Fusion
Material: Nylon PA12 (Black)
Finish: Raw

Original and replacement battery cover

Original (bottom) and replacement (top) battery cover

Part Download

The part can be downloaded from Thingiverse.

References

Gonzalez, D. (2016). Bronica medium format cameras. Retrieved from http://bronica.org/start/bronica-medium-format-cameras.html

Converting Raumbild-Verlag Stereographs To Anaglyphs

These converted stereographs (German: raumbilder “space pictures”) are from an album entitled “Bad Reichenhall – Berchtesgaden” published by Raumbild Verlag between 1945 and 1948. Bad Reichenhall and Berchtesgaden are towns in the Bavarian Alps in Germany. The album consists of 20 stereograph cards, with each card being 6 cm by 13 cm. The album also contains an adjustable stereograph viewer (German: raumbildbetrachter “space image viewer” or raumbildbrille “space image glasses”). In contrast to the ones produced during World War II, these stereographs are focused on the scenery of Bad Reichenhall, Berchtesgaden, and the surrounding areas.

Raumbild Verlag was founded by Otto Wilhelm Schönstein (1891-1958) in the early 1930s (Hotze, 2015, para. 1). The company was moved to Munich in 1939 (Hotze, 2015, para. 2). Heinrich Hoffmann (1885-1957), Adolf Hitler’s official photographer, had by that point become a partner in the company (Schröter, 2014, p. 191). Continuing from his demand in 1937 that Schönstein “should withdraw to a subordinate, more technical position,” Hoffman moved from being a partner to that of managing director in 1939 (Schröter, 2014, p. 191). Schröter (2014, p. 191) contends that Schönstein “could not do anything against it because of Hoffmann’s prominent position.” In addition to Hoffmann, Hitler himself seemed to take an interest in stereoscopy, along with Albert Speer, the Minister of Armaments and War Production, which Schröter (2012, p. 136) suggests “has something to do with the ideology of space in National Socialism.” Despite this, Martins and Reverseau (2016, p. 171) argue that the propaganda value of the books was undermined by, amongst a few factors, “a break between image and caption that prevented the viewer/reader from experiencing the potentially synergistic reinforcement between image and text that was a cornerstone of Nazi photographic propaganda.” According to Uziel (2008, p. 244), photographers in the Wehrmacht Propaganda Troops (“Propagandakompanien der Wehrmacht”) were equipped with 3D cameras, from at least January 1940. The photos were sent on to Raumbild Verlag, which is considered by Uziel to have “practically monopolized the field of 3D photography in Nazi Germany” (2008, p. 245).

Each set of cards was expensive. Martins and Reverseau (2016, p. 173) note the 35 Reichsmark purchase price of a 1941 stereoscopic photo album, comparing it to the monthly rental cost of four-room apartments in the city of Nuremberg in 1940. Calculating the modern equivalent of 35 Reichsmarks can be difficult, given that the currency no longer exists, along with the amount itself being about 80 years old. Edvinsson (2016) suggests an approximate value ranging from about $200 to $800 Canadian dollars (in 2015), using the CPI and gold and silver values. Marcuse (2013) provides a conversion rate of 2.5 Reichsmarks to one US Dollar in 1940. Using the Bureau of Labor Statistics (2017) CPI inflation calculator, the amount of $14 USD in 1940 is roughly $245 in 2017. Martins and Reverseau (2016, p. 173) conclude that such stereoscopic photobooks could rightfully be considered luxury items.

Each stereograph was scanned on an Epson V850 Pro at 2400 DPI. The resulting scan was touched up (e.g. removal of scratches, dust, dirt, and other imperfections originating from the creation process or from age and storage) and then sharpened in Photoshop with Smart Sharpen at 65% and a radius of 1 px. The stereograph images themselves are not very sharp (as seen under 10x and 22x loupes), so a smaller radius was not likely to be helpful in producing better sharpness.

While the viewing glasses for these stereographs are not too difficult to acquire, it is still an obstacle to viewing the images as they were intended (i.e. in 3D). The goal here was to see whether these stereographs can be converted to anaglyphs (red-cyan). I have not been able to find any previous attempts at this goal. Overall, I believe the goal was achieved, and the experience with the anaglyphs is similar to that with the intended stereograph viewer.

 

Overview of the steps of the anaglyph creation process.

Overview of the steps of the anaglyph creation process.

 

A selection of the stereographs, with their original captions immediately below:

 

"Sonnige Terrassen-Hotels und Villen in Berchtesgaden"

“Sonnige Terrassen-Hotels und Villen in Berchtesgaden”

 

"Berchtesgaden"

“Berchtesgaden”

 

"Am Marktplatz in Berchtesgaden"

“Am Marktplatz in Berchtesgaden”

 

"Der Blick zum Watzmann"

“Der Blick zum Watzmann”

 

"Wildromantische Landschaft am Obersee"

“Wildromantische Landschaft am Obersee”

 

"Alter Brunnen am Marktplatz in Berchtesgaden"

“Alter Brunnen am Marktplatz in Berchtesgaden”

 

References

Bureau of Labor Statistics. (2017). CPI inflation calculator. Retrieved from https://www.bls.gov/data/inflation_calculator.htm

Edvinsson, R. (2016). Historical currency converter. Retrieved from http://www.historicalstatistics.org/Currencyconverter.html

Marcuse, H. (2013). Historical Dollar-to-Marks currency conversion. Retrieved from http://www.history.ucsb.edu/faculty/marcuse/projects/currency.htm

Martins, S. S., & Reverseau, A. (2016). Paper cities: Urban portraits in photographic books. Leuven, Belgium: Leuven University Press.

Schröter, J. (2012). The transplane image and the future of cinema In A. Petho (Ed.), Film in the post-media age (pp. 125-142). Newcastle upon Tyne, UK: Cambridge Scholars Publishing.

Schröter, J. (2014). 3D: History, theory and aesthetics of the transplane image. London, UK: A & C Black.

Uziel, D. (2008). The propaganda warriors: The Wehrmacht and the consolidation of the German home front. Bern, Switzerland: Peter Lang Publishing.