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D-Caps for Behringer Neutron – free STL download

DCAPS Behringer Neutron

The DCAPS are 3D printed PLA stands for the Behringer Neutron and can be used:

  • As standalone tabletop stand (perfect for the Model D in combination with Arturia Keystep Midi Keyboard)
  • As extension of an Eurorack
  • As extension of the DCASE

The DCAPS are now available for 3D printing under Creative Commons license on Thingiverse:


  • Additional space for Eurorack modules
  • DCAPS with 65 mm maximum module installation depth
  • Each DCAP with whole for external wiring
  • Wholes for mounting on other modular systems
  • Lifts the Behringer metal case over the cable connections of the Keystep.

The Installation of the DCAPS for the Behringer Neutron

The DCAPS are easy to install and the installation process is straight forward. Only a Phillips screwdriver is required for the assembly. Just remove the 4 screws on each side wall of the original metal housing and replace the fake wood side walls with the DCAPS. The metal plate as well as the screws of the original Behringer housing are re-used for mounting the DCAPS.

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Chinon CE Memotron SLR – A Hidden Jewel

Chinon CE Memotron

The Chinon CE Memotron was not made by one of the big well known manufacturers like Canon, Fujifilm, Nikon or Leica and can be therefore purchased these days for very small money.

The Chinon CE Memotron

What makes the Chinon CE Memotron special, is the fact that it is one of the rare SLR cameras which works with almost every M42 SLR automatic lens in aperture priority mode. Every lens which has the small metal pin at the back for the automatic aperture will work with the camera in automatic (aperture priority) mode. With the shutter release pressed down half way, the meter reading can be stored/locked (that’s where the name memotron comes from) by pushing another button on the side of where the lens is mounted. Due to the involved mechanics, the shutter release has a quite long travel way which might be the only drawback of the camera.

Very well made

The camera is very well made with a brass top plate underneath the black paint. If you hold the camera in your hand, you can feel the quality since it is more on the heavy side.

The electronic shutter of the camera features speeds from B, 1 sec up to 2000/sec and a switch close to the shutter release button enables double exposures with disengaging the film advance gear.

The film advance lever has a very nice gear transmission ratio which leads to a short and distinct travel way.

Focusing with the viewfinder is easy due to the possibility to focus with open aperture when using automatic lenses.

All the nice M42 lenses

As much as I like the Bessaflex because of its tiny size and bright viewfinder, it has a big issue with several lenses where the rear element is hitting the mirror. The Chinon has not such problems. The camera just accepts each and every M42 lens and works flawless with them. …and there are some fantastic M42 SLR lenses being made!

Currently I use the following lenses with the Chinon aka Revueflex 5000EE aka Porst Reflex M-CE:

  • Pentax Super Takumar 50/1.4
  • Carl Zeiss Jena Flektogon 35/2.4
  • Carl Zeiss Jena Sonnar 135/3.5 MC


  • Works with all M42 lenses
  • Aperture Priority Mode with almost all automatic M42 lenses
  • Meter lock switch
  • Fantastic solid built quality (brass)
  • Double Exposure Button
  • Nice short defined film advance
  • Up to 1/2000 shutter speed
  • Very reasonable priced on the second hand market


  • Long shutter release travel way
  • Dependent on battery

Example Shots (Super Takumar 1.4/50 on APX100)

The Chinon CE Memotron Camera Series

There are three different types of the Chinon Memotron available. The CE, CE II and CE III. Below I’m giving a short overview of the similarities and differences of the cameras.

Common Features

  • M42 Screw Mount
  • Focal Plane Vertical Metal Blade
  • Multi Exposure Lever
  • Viewfinder: SLR pentaprism, Speeds Scale and Exposure Indicator Needle are visible in viewfinder
  • Hotshoe + dual PC M X sockets
  • AE Memory Button (Memotron): for holding the metered exposure in memory, on the lower left side of the lens mount, for this: in Auto mode, depress the shutter in half-way for metering then press and lock the Memory Button, then release the shutter on another frame composition

Chinon Memotron CE

  • 2 – 1/2000 seconds shutter speeds
  • Dual Silicon Blue Cell (SBC) TTL Center Weighted meters
  • 760 gr body weight
  • PX28 6v Silver-Oxide or Alkaline equivalent battery
  • 145 x 97 x 54.5 mm
  • ASA 25-3200

Other branding: GAF L-ES, Sears 2000, Revueflex 4000EE


Chinon Memotron CE II

  • 2 – 1/2000 seconds shutter speeds
  • Dual Silicon Blue Cell (SBC) TTL Center Weighted meters
  • Battery: 1x 4SR44 (6v silver oxide)
  • 760 gr body weight

Other branding: GAF L-ES/2, Revueflex 5000 EE, Revueflex 4004,  Porst Reflex M-CE, Alpa SI 2000, Argus CR-3E


Chinon Memotron CE III

  • Smaller Body than the CE and CE II
  • Seiko MFC-ES, stepless electromagnetic focal plane metal shutter, vertically travelling shutter with speeds from 4 to 1/1000. Manual: B, X, 4 to 1/1000.
  • Viewfinder: Eye-piece blind feature: a lid closes by a small lever, just left to the prism
  • Exposure meter: TTL CdS meter, two cells, centre weighted, aperture priority automatic exposure control
    • Auto exposure range: EV 1-18, at 100 ASA
    • Auto Exposure compensation feature: -1/2x to +2x EV, 1/3 F-stop increments
    • Metering is possible in Auto and Manual modes
  • Battery: 3v, two silver oxide 1.5v, eg.G13/S76, (accepts lithium Kodak K58L or two alkaline, eg. LR44)
  • External motor drive socket and connections: on the bottom plate
  • Body Dimensions: 140×88×50mm.
  • Body Weight: 620g.

Other branding: Revueflex AC 1




Please feel free to correct provided information and let me know if you know more Chinon CE Memotron re-branded cameras in the comments.

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Pocket Operator Eurorack holder – EUROTEN & EUROTENDUO

Eurorack Holder for two TE Operators

The EUROTEN and EUROTENDUO are two mounting frames to mount Teenage Engineerings’ Pocket Operators™ into the Eurorack.

Pocket Operator Eurorack holder for one ore more Teenage Engineering Pocket Operators

EUROTEN -A mounting frame for a single Teenage Engineering Pocket Operator™

EUROTENDUO -A mounting frame for two Teenage Engineering Pocket Operators™.

The pocket operator eurorack holders are 3D printed with high quality PLA material. The simple design ensures comfortable handling. The operators can be easily removed out of the Eurorack for programming. Once programming is done, they just snap in place without any screws.

No screws

Only the frame need to be screwed into the Eurorack. There are no screws required to mount the Operators into the frame. They just plug into the frame and can be easily removed the same way.

No soldering

Because of the slightly angled arrangement of Pocket Operators in the Eurorack holder, the connectors stay accessible. For free access to all connectors, holders for either one or three Operators are required. There is no soldering required to shift the connectors onto the back of the device.


To ensure that all plugs at the Pocket Operators are always accessible when mounted into the Eurorack, it’s highly recommended to use either one, three (EUROTEN+EUROTENDUO), six (2xEUROTEN+2xEUTOTENDUO), nine,… pocket operators. The idea behind this, is that the outer holder should be always the higher one.

Order Online

EUROTEN+EUROTENDUO – Eurorack holders for three Teenage Engineering Pocket Operators™


EUROTEN – Eurorack holder for one Teenage Engineering Pocket Operator™



Free STL FIle Download

EUROTENDUO – Eurorack holder for two Teenage Engineering Pocket Operators™ (STL File Download)

EUROTEN – Eurorack holder for one Teenage Engineering Pocket Operator™ (STL File Download)

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120 to 127 Medium Format Film Spool Adapter

Adapter to use 120 film in older 127 mm cameras

After the modification of the Agfa Ansco Plenax PD 16  into an almost 6×12 camera,  I required a 120 to 127 mm film adapter for my Agfa Ansco Mod camera to be able to use the standard 120mm medium format film.

120mm Film Spool End Caps

First I designed adapter caps for the 120 mm film spool. While these caps were working fine on the side of the camera where you put in the full film role, they failed on the side where you advance the film. Pretty quick the plastic wear of and the film couldn’t be advanced anymore. I tried PLA, PETG and even Nylon, always with the same result.

Next I just used the original 127mm as a take up spool for the 120mm film. Due to the wider film spool, I faced light leaks on the exposed film when taking the film out of the camera during day light.

Another approach was to cut the 127mm film spool into two pieces, warm them up and melt them into the 120mm spool. This was working very well but since I wanted to have more spools I decided to go another way.

120 to 127 Film Spool Adapter

The outcome is now a film spool, printed with PETG, with the outer dimensions of a 127 spool and inner width for 120 mm film. The part which engages with the film advance is a 4mm thread repair screw. The film is now well protected against the light and the film advance is very solid.

Purchase or Download

The spool can be purchased through my online shop. There is also the possibility of the free download of the STL file in the STL file section in case that you own a 3D printer or have access to one.

120 to 127 Medium Format Film Spool Adapter

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The SP1 Eurorack Case – a modular 3D printed Eurorack Case

The SP1 Eurorack Case - a modular Eurorack Case

About The SP1 Eurorack Modular Case

Why to be limited to modules when it comes to a flexible modular system? Why not also to be flexible with the casing? The SP1 growths with your needs. From the small to-go modular drum synthesiser setup up to the fully fledged modular home system…or even combine a stationary system with a mobile system. The SP1 can be extended vertical as well as horizontal.

Features of the SP1 Eurorack Modular Case

  • Flexible modular case design
  • 3D printed and use of standard Eurorack thread profiles
  • Horizontal Extendable
  • Vertical Extendable
  • Build in cable shaft on the back (shaft is accessible with the modules SP1H10CC or SP1 H10DCC)
  • Light Weight
  • Good Cost/Performance Ratio
  • Horizontal or angled desktop position*
  • 70mm module depth

Current available SP1 Eurorack case modules:

  • SP1H10 – Standard 10 HP 3U Eurorack Module
  • SP1H35 – Standard 35 HP 3U Eurorack Module (only STL file download)
  • SP1H10VC – Standard 10 HP 3U Eurorack Module with vertical connection and cable holes
  • SP1H10HC  – Standard 10 HP 3U Eurorack Module for vertical connection and back pillar
  • SP1H10RC – 10 HP 3U Eurorack Module with right cover
  • SP1H10LC – 10 HP 3U Eurorack Module with left cover
  • SP1H25GM – 25 HP 3 U Eurorack Module with Grip
  • SP1H10CC – Standard 10 HP 3U Eurorack Module with cable opening into the cable shaft
  • SP1H10DCC – Standard 10 HP 3U Eurorack Module with double cable opening
  • SP1Cap10 – 10 HP front cap
  • SP1Cap25 – 25 HP front cap
  • SP1CapRC – 10 HP front cap with right cover
  • SP1CapLC – 10 HP front cap with left cover

Planned case modules:

  • SP1SQ1 – Eurorack Module for Korg™ SQ1
  • Sp1TEO – Eurorack Module for Teenage Engineering™ Operator Series
  • SP1H10FL – Standard 10 HP 3U Eurorack Module with flat back for horizontal positioning
  • SP1H10VCFL – Standard 10 HP 3U Eurorack Module with vertical connection and cable holes with flat back for horizontal positioning
  • SP1H10RCFL – 10 HP 3U Eurorack Module with right cover with flat back for horizontal positioning
  • SP1H10LCFL – 10 HP 3U Eurorack Module with left cover with flat back for horizontal positioning
  • SP1H10CCFL – Standard 10 HP 3U Eurorack Module with cable opening into the cable shaft with flat back for horizontal positioning
  • SP1H10DCCFL – Standard 10 HP 3U Eurorack Module with double cable opening with flat back for horizontal positioning

Available in the online shop or as free STL Files for your own Eurorack prints.

*desktop position for one horizontal row systems only

SP1 Print Recommendation
SP1 Print Recommendation
The Sp1 Eurorack is a flexible modular casing system and can be extended vertically and horizontally. The SP1 Eurorack growths with your needs.

SP1H10 – Standard 10 HP 3U Eurorack Module

SP1H10DCC – Standard 10 HP 3U Eurorack Module with double cable opening

SP1CapLC – 10 HP front cap with left side wall

SP1CapRC – 10 HP front cap with right side wall

SP1Cap10 – 10 HP front cover

SP1H10HC – Standard 10 HP 3U Eurorack Module for vertical connection and back pillar

SP1H10CC – Standard 10 HP 3U Eurorack Module with cable opening

SP1H25GM – 25 HP 3 U Eurorack Module with Grip

SP1H10LC – 10 HP 3U SP1 Eurorack Module left endpiece

SP1H10RC – 10 HP 3U Eurorack Module right endpiece

SP1H10VC – Standard 10 HP 3U Eurorack Module for vertical connection


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7 days in Italy: Tropea – Salerno – Rome

Tropea, Italy

It all began with a reminder of my youngest daughter Tessa in May this year, that I promised a holiday trip this summer. Trying to be a good father I had to stick to my promise and started searching for nice destinations to spend some great time with my two beloved daughters. The final candidates for holiday destinations where Croatia and Italy. Scared from the high prizes and flood of Tourists in the north of Italy, I started looking into the south of Italy (in fact I was searching of budget holidays in Italy 🙂  ) and found the spectacular photos of Tropea.

Reading several articles about Tropea and the surrounding area, it seemed to be the perfect destination. People where telling that costs for accommodation and food are reasonable and locals very friendly. Destination one checked.

But since staying the whole week at one place might get boring, I decided to include two more locations. After several days in Tropea, I planed a stay in Salerno to visit the beautiful coast of Amalfi and finally traveling further to Rome as the final destination from where we would fly back to Germany. I booked all flights and hotels already at beginning of June since my first journey would bring me to China. 

On the 24. of June I arrived in Frankfurt after a nonstop flight from Chengdu with Air China. In the evening after exchanging the suitcase with a backpack, I headed with my daughters to the railway station to get the train to Düsseldorf. Our flight took of as scheduled, early morning on the 25th. We reached Lamezia Terme and took the train to Tropea. Beside waiting 1.5 hours for the train, everything went very well as planned. Finally, around noon time we arrived at our Hotel and could find some sleep.


The Hotel Giardino Marchese D’Altavilla was great. Simple but clean rooms, located a bit outside of the city with a great view over the sea and the volcano at Stromboli in the back. Tropea is a small but amazing beautiful city, located on the edge of rocks facing the sea. I would say the city reflects exactly what you would expect from a south Italian city. Old buildings, narrow roads with plenty restaurants and shops. But by far the best of south Italy are the people.

“…they are so cute..”


It’s not a cliche,  the people are incredible friendly and nice. It’s much more than the typical superficial smile what you get when visiting any restaurant or a hotel. Wherever we required any help or information, we faced friendly and nice Italian people. Even my daughters mentioned uncountable times how friendly the people are… or to say it with my daughters language… “oh my good – they are so cute…”. 

Due to the windy weather, we couldn’t to the planned boat trip to the volcano. During our stay in Tropea, we visited the beach which is located underneath the city, enjoyed Italian food and ice cream, took photos and my daughters did a horse ride on a local farm while I was watching the football world champion chip where Germany ones more lost a game. The costs for food, beach and activities were very reasonable compared to other touristic spots in Italy.

From Tropea to Salerno

On the 29th of June, we left Tropea by train back to Lamezia Terme and further to Salerno. Mentioning before the amazing friendly Italian people, it was in Salerno, where we met the most incredible Italian ever – our host. Not only that he picked us up from the train station, he also gave us a short sightseeing tour through Salerno while explaining us the way to the most important locations. Arrived at the flat, we found sweets and juice in the fridge as well as a lot of information material and we received further advice regarding activities from our host. Thanks to him, we attended a typical Italian catholic procession in the nearby village Cetara where I could shoot some incredible photos. During our stay he was always reachable via Whatsapp or mobile and again, incredible helpful. There was it again, the special Italian friendliness.  Since I doubt that there is any comparable host or accommodation in Salerno, I have to mention the flat here and highly recommend to consider it if you want to visit the Amalfi coast: Casa Vacanze del Carmine 

Amalfi Coast

The same day at evening, we took a boat to Cetara where the annual St. Pietro procession took place. Although it was very crowded and a bit chaotic (especially on the way back), it was a fantastic experience with a great firework.

Since it got late, we got up late the next day and started a boat-bus trip to Positano. First we got onto the boat to Positano where we had a nice late lunch and a short sightseeing tour through the village and than for the way back to Salerano we took the bus… least that was the plan.

We entered the already crowded bus to Amalfi, where we had to change into the bus back to Salerno. There we experienced the first unfriendly Italians:  bus drivers. Since the bus had also no destination signs we ended up in the wrong bus going into the wrong direction.

Lost at the countryside

While it became more and more dark outside and google maps was showing me that we were heading into the fully wrong direction to the countryside, we decided to get out at the next bigger village to start searching for an accommodation for the night. It took us a while to find a hotel since google was guiding us several times to wrong locations where wasn’t a hotel anymore. Finally we arrived at a hotel and thanks to the helpful hotel staff, we could check in even without a passport which was still in our main accommodation in Salerno. I told our host in Salerno about our misadventure and he immediately did offer to pick us up and bring us back. I denied thankfully since it was really far away and we had already our accommodation for the night.

View from our hotel room

Avoid the bus

The next morning while having breakfast the hotel staff informed us that we had to buy a bus ticket from the local shop. We left the hotel to  purchase our bus tickets and got shocked when we found out that there was only one ticket remaining. With only one ticket in our pocket we tried our best and waited for the bus with a huge group of people at the bus stop. The bus arrived already fully crowded and we’ve been among the last who could enter the bus. Without further stops at other bus stops where more people have been waiting, we headed back to Amalfi. By the way, as far as we know, it was the only bus on this Sunday. ….lucky us.

Crowded bus back to Amalfi

Due to our bad bus experience, we preferred to take the boat back to Salerno. Arrived in our flat in Salerno we met once more our host who gave me a chili key chain as gift for good luck. (For some reason he was of the opinion that I need this 🙂 ) 

Bye Bye Salerno – Hello Rome

We packed our stuff and walked to the train station where we got informed that all fast trains to Rome were fully booked. We ended up in a commuter train and reached Rome after a 5 hours journey which wasn’t too bad. Our accommodation in Rome was again simple but clean with a friendly host who recommended us a fantastic restaurant in the neighborhood for having dinner. (Roma Tourist House)

Rome sightseeing

Our next to last day in Italy was a hot midsummer day. After a guided tour through the Colosseum we decided to walk around in Rome by our own to visit only some of the hot spots like the Spanish Steps and Trevi Fountain. 

After a final original Italian ice cream we returned to our accommodation to prepare our departure from Rome back to Düsseldorf the following day.

It was a great time discovering Italy together with my Daughters and as far as I know, they enjoyed it as much as I did. As already mentioned several times, we’ve been overwhelmed of the incredible friendly Italian people with the extraordinary hospitality. Tropea as well as Salerno with the adjacent Amalfi coast are highly recommended and should be truly considered in your next plans for holidays.

Cameras used: Leica Q and Voigtländer Bessaflex with Zeiss Jena Flektogon and Sonnar.

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Some impressions of my Photos at the Qatar Contemporary Art and Photography exhibition in St. Petersburg. The team from Qatar Museum did a great job on how the photos have been presented. 

Link to Qatar Museum

Link to manege, St. Petersburg

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DRE20 V2.0 – BOSS – RE-20 Space Echo Eurorack mounting frame kit with CV sync

The DRE20 V2 converts the BOSS – RE-20 Space Echo Twin Pedal into an Eurorack module. The DRE20 V2.0 contains 1 voltage controlled switch which control the Tap (tempo) button. The set includes an adjustable DC-DC step down converter. The CV control of the Expression pedal is not implemented yet. 

Additional Parts

While all required screws can be re-used from the Boss Re-20, following additional parts are required:

7 pcs. 3.5 mm Eurorack Jacks PJ301CM Stereo

Wire to connect the jacks with the PCB


Step 1

Disassemble the Boss RE-20 Space Echo and remove carefully the glued metal sticker in the center of the device. Disconnect the two ribbon cables of the PCBs since the front PCB needs to be trimmed that it fits into the Eurorack.

Step 2

Cut small strips with the hand saw from the RE-20 front PCB (the PCB which contains the potentiometers and LEDs) from the top and the bottom that it fits later into the Eurorack. See below photo showing one of the cut parts.

Step 3

Unsolder all jacks and solder cables to connect the Eurorack jacks to the PCB. Solder the Eurojacks to the cables and screw the spacers with existing screws from the Boss RE-20 onto the back of the front PCB.

Step 4

Screw the Boss RE-20 aluminium panel with the 3D printed front panel with two of the Boss RE-20 aluminium panel screws together. Widen the holes for the screw on the top of the aluminium panels with a drilling machine (or similar) until the two holes of the aluminium panel align with the threads of the Eurorack.

Step 5

Align the 3D printed buttons on the 2 switches of the RE-20 PCB and screw PCB with 4 of the existing screws (from the Boss RE-20) on the back of the 3D printed front panel 

Step 6

Align the cables between the two PCBs, connect the two ribbon cables and screw the PCB onto the spacers between.

Power Supply

For the power supply, either the original power supply can be used or the included power converter which converts the 12V of the Eurorack into the required 9V for the Boss RE-20.

Demo on Youtube

Download the STL files and print your own Mounting Kit

The DRE20 Boss RE-20 Space Echo Eurorack STL files on Thingiverse:


Order the DRE V2.0 Conversion Kit

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The (almost) 6×12 AGFA ANSCO Plenax PD 16 camera DIY 3D print project

The Agfa Ansco Plenax PD 16 were are series of folding cameras for 116 film (PD16) format for 2½×4¼ inch negatives (nominally 6.5×11 cm) which was manufactured around 1935. With the 6×12 AGFA ANSCO Plenax PD 16 camera DIY 3D print project, the camera is able to take high quality captures due to the fantastic Schneider Super Angulon f8/90mm lens.  

Since the camera is available on the market for a reasonable price (around 40$), it suits perfectly as a camera body for the 6×12 modification. The camera was manufactured for the 116 film format where the picture frame of 6.5 x 11 cm almost reaches the common 6×12 format.

Further items required for the modification:

For using 120mm film, film adapters are required. Alternative, original 116 film can be used.


The assembly is straight forward. The whole front of the camera needs to be removed with a bit force. Once accomplished, it needs to be checked that the remaining internal metal parts of the body have not been bent. Otherwise, they need to be re-adjusted. 

Once everything is in place again, the 3D printed front part needs to be placed in the now empty area, replacing the previous bellow assembly. The front part reaches until the film guide to narrow the frame for the 120 film format.

When everything is perfectly aligned, two holes need to be drilled from the bottom and the top through existing holes to fix the assembly with screws. Ensure that the holes fit with the chosen thread of the screws. Woodscrews are perfect for this job.

Now insert the helical and ensure that the scale is proper aligned and the focus operates smoothly. Take a small screw driver and heat the front with a lighter to burn 2-3 holes into the plastic to screw the helical onto the front part. Assemble the whole front part and check if everything works as expected. If so, dis-assemble everything and burn the further holes into the plastic to put the remaining screws of the helical in place. Again, ensure that the holes are not too big, that the screws fit perfectly into the thread. Don’t assemble the lens yet.

Now, if everything is working, unscrew the 2 screws which are holding the whole front and put sufficient glue into the inside of the Ansco camera body. I highly recommend to use Super X glue. (

Once the glue is applied, slide the front part into the camera body and fix it again with the two screws. Ensure again that everything is perfectly aligned. Now it’s time for a 24 hour rest to let the glue dry.

The final step is to cover the inner part of the camera with foam rubber sheets.

Order the 3D printed Mod Parts for the AGFA ANSCO Plenax PD 16 in the online shop


Download the STL files and print your own Mod

The 6×12 AGFA ANSCO Plenax PD 16 camera DIY 3D prints on Thingiverse:

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9V and USB power converters for Eurorack

9V Eurorack Power Converter

12V and 9V Eurorack Power Converters

As addition to the DSQ-1 and DR20 the two power converters connect the devices to the 12V Eurorack power supply. It abolishes batteries or external power supplies which are usually used to power the devices.

Easy Connection

USB power converter

Just connect the Eurorack connector to the Eurorack power supply and plug in the USB cable from the Korg SQ-1 (or any other USB powered device)

9V power converter

Disconnect the cables from the RE-20 battery holder and solder them onto the small PCB. (Pay attention to the correct polarity) Although pre-configured to 9V, the converter power can be freely adjusted for other devices to any voltage below 12V.

Order the Power Converter

Each Converter comes with a small housing and ribbon cable. While the USB version is a ready-to-go device, the 9V version requires to solder the power cables from the according device.