Would the angle be different for a different location?2. I used a direct drive versus a screw lead type. Question Ceci est un exemple, je n'ai aucune idée de la variation du code. on the picture we can easely notice some deep sky objects: I also practice astrophotography with a telescope, you can see my photos on Instagram ;). Drill a hole all the way through. If tube, source please? I suppose I could use the standard plumbing 3/4" pipe. When you are fairly confident with your alignment, push the moving board (the top) to the west (left if you're looking at Polaris) and place your instrument on top of the platform. Or did you drill a hole in the rod? However, living above 60 degrees latitude, I needed to design my own platform. In order to drive the motor with 4076 steps, there is this Arduino library by tyhenry. The main shaft is made from a copper tube the material is not very important but it must be a tube, you will understand why later. Je sens que j'en suis pas à ma version finale ;)[Edit] rien que quelques coups de perceuse avec différents forets ne puisse régler, cependant ça sera plus propre si je refais la pièce autrement ;) ma rotule tient très bien :-) une tige filetée M8 rentre bien dans le trou latéral que j'ai débouché à la perceuse aussi. on Introduction, Hi Simon,Can you post some simple instruction how to adjust rotation speed because of gear ratio changes? If you want to learn how to create your own or if you want to modify it, I invite you to take a look at Reiner Vogel's page and his detailed instructions. Faut juste que j'en trouve une de longueur adéquate. Share it with us! To do this, screw the threaded rod into a piece of wood and cut the other end of the wood at 30 degrees. Mais bon on ne règle pas l'angle tous les jours et à concevoir et modéliser c'est une autre paire de manches. However, in my case, the axis is 60 degrees from horizontal. One is for the motor which gets attached with a small allen key, the other hole is for a pin to keep the worm gear centred.The gear is from here: https://www.sdp-si.com/products/Gears/Spur-Gears-72-Pitch.php They also have worm gears if you don't want to make your own.I'll check at home where the rest of the design is. In this Instructable, I will show you how I designed an equatorial platform for my telescope. À mon avis, pour chaque focale que vous utilisez, vous devez faire varier le code arduino, au lieu de 3,5 secondes pour 85 mm, si vous utilisez un 100 mm, vous devez réduire le temps de 3,5 à 3 secondes. You can use a stepper motor or a DC motor. The RELEASE BRANCHESare well tested and what most should use. NexStar HC Protocol 2. Reply Remove the small gear wheel from the motor to release the axis. Je pense avoir trouvé le pb entre temps... des faux contacts sur mes pins... en changeant ces pins, j'ai bien l'ordre des leds, D/DC/C/CB/B/BA/A/AD qui se repete. I decided to make a simple gear reducer with only 2 wheels, one with 10 teeth and the other with 60 teeth, that way, it divide the speed by 6 and multiply the torque by 6, perfect ! My main reason for doing this project was to have a mount that tracks and does not have to be manually moved to follow an object. Drafted as stand alone system, rDUINOScope does not need PC, Tablet or Cell Phone, nor Internet connection in order to operate and deliver stunning views! As a big fan of astrophotography and 3D printing I had to build my own equatorial mount for my DSLR. You can use the SVG file attached. Install the altitude wheel directly to the telescope, using the … Et merci de partager votre projet. The gears teeth have to mate the worm. We can start by assembling the polar axis. Fortunately the rotation of the Earth is well known, the axis is passing through the north celestial pole and the rotation speed is 1rev/23h56min4s (stellar day). You can shim the south or north end to align the axis with polaris.The height of front and back should be about the same. Did you make this project? Technically, it rotates at the same speed as the earth but in the opposite direction. With that we can create a device that turns on a parallel axis and at the exact opposite speed as the Earth. Instead of buying the 3 foot rod, pretty expensive, I am planning to just use a section of 3/4" bolt. How long a segment is needed as a worm gear? I used GT2 gear 100:16 little bit different that original 6:1 .AdviceMaciej, Answer I am aiming to be able to control the stepper motor over WiFi with an esp8266. Oh this is the worst part. And for my star tracker I wanted as few gear wheels as possible in order to reduce play in the mechanism that is why I didn't make a planetary gear. Arduino Control This year I have added my homemade Arduino GOTO telescope control system and got rid of the hopeless Meade system. Now measure the distance needed for the support of the polar axis. You can now slide the polar axis inside. Usually the newest (highest revision) RELEASE is recommended. The cog has 72 teeth and the DC motor turns at 4 rpm. Some may have 40 or 20, hence the different vertical segments for each platform. These bearing will allow your platform to move smoothly. Building a barn door mount, part 1: arduino stepper motor control 19 Replies Serious astronomical imaging requires an equatorial mount for the camera / telescope, which tracks the rotation of the earth for anywhere between 5 minutes and several hours. merci d'avance ! Super boulot ! It shows picture of both the north bearing and the upper platform. This mount then morphed into the tracking table shown, which is a viable alternative for an Alt/Az mount albeit the short run times of the sector. #rDUINOScope is an Open Source, Arduino Due based Telescope Control System (GOTO). since you will be using wireless communication to control the tracker, you could consider incorporating a sensor with a gyroscope and compass, to have direction and head tilt information, a sensor that could be used would be the gy-80. It was the best one that I could find for a star tracker. You will notice that the threaded rod for the polar axis has no support yet. Merci de ta réponse. For the moment i could just control the DSLR with something like this.Thanks Again. Mechanics, Part 2 - Install the Wheels. In order to function properly, the motorised bearing rod should extend a few inches to the north side. I chose a DC motor because I already had one and I could adjust the speed easily by simply changing the voltage with a variable resistor. It can also be cut by hand but make sure to keep the original size (21" tall for the top board without the vertical segments attached). (et l'alim aussi? Déjà je veux tester l'assemblage pour voir si j'ai suffisamment confiance dans la solidité.Et je pense qu'une difficulté à l'usage sera de bien mettre ma base à l'horizontale.Là j'ai imprimé le corps et il y a du jeu dans la queue d'aronde, je vais voir comment le résoudre, peut-être tout simplement en collant les 2 pièces. NexStar AUX Protocol This device will let you observe an object for several minutes or take photos of the night sky without having to worry about star trails. Look into the tube and adjust the head of the tripod the see the North Star into it (you can also use a laser through the tube). I will use the stepper motor, but this time, driven by an Arduino board and stellarium. You can then cut this support in a piece of wood and cut the bottom side at a 30 degrees angle. Feb 13, 2020 - Explore Gary Zapotoczny's board "homemade telescope mounts" on Pinterest. Merci ;)Hmm c'est étrange ton problème... Si tu as essayé différents câblages, différents moteurs, différents drivers et même différents codes je ne vois pas vraiment d'où ça peut provenir, lorsque tu mets mon programme les led du driver s'allument-elles ? Description. For the base, you can have the same shape but make the north side longer and extend the south side a little. The design of the "Polar axis": is there a reason for cutting and positioning the wood at 30 degrees? ... Main homemade German equatorial GEM telescope mount project Category page Homemade GEM telescope mount slew video Picking up the telescope mount project Mount slewing video take 2 This project aims an automatic control for telescopes, is based on Arduino and is low-cost!. Bonne idée !La queue d'aronde est là pour pouvoir imprimer les deux pièces chacune de son côté pour une impression plus propre qu'un énorme bloc avec plein de supportsJ'ai laissé un jeu dedans pour pouvoir y glisser une petite plaque en métal dans le but que les vis de maintien ne bousillent pas la pièce en plastique, en effet pour que ce soit bien rigide il faut serrer les vis un peu fort et sans cette plaque c'est un peut délicat de serrer...Maintenant si tu veux les coller ça marchera tout autantBon bricolage :), Ok je comprend. Since I am living in the north, Polaris sits quite high in the sky. Is the platform (top board) level/horizontal?3. What does my Arduino … The parts are displayed on the pictures above. Just drill a hole on each end. the member videoenquirer modified the previous code for the southern hemisphere : Once printed, screw in place the two PCB (Arduino + ULN2003 driver) and place the components in the box. Well done! You will need to adjust the speed of your motor while keeping your eye in the eyepiece. 5 months ago. I am in the process of designing and building an equatorial mount for tracking and guiding of a DSLR camera + lens and/or a small telescope (perhaps up to an 8" SCT optical tube). More info about this will be appreciated.I like the idea of fixing the motor stand with butterfly nuts, perfect.I downloaded the design. Screw the DSLR on the ball joint, and add the counterweights on the other side. It has a diameter of 10mm because I had some 10-30-9 bearings (those may be oversized but it results in a very reliable revolute joint), I used a 5VDC 28BYJ-48 stepper motor, which is not very powerful but with the gear ratio it should be enough. 2. My lens is a Canon 24mm f2.8 so according to the rule: 300/24=12.5 I can only shoot stars during 12.5s and that is very short to capture enough light from them. First, 1rev/23h56min4s is slow, very slow. (ON / OFF) I am also wanting to make WiFi version of Manis404's Eos controller and hopefully run it off of the same arduino for full WiFi control.Thanks for the instructable. Je n'ai pas l'impression. Place the board upside down (polar axis up) and screw the segments into the sides of the board making sure the boards make a right angle. Solder wires according to this schematic: Then plug the motor and clip the lid on the box. Indeed, the vertical segments will reach their end after a while. In astrophotography, we use the "500 Rule" it allows to take pictures of the night sky without noticeable star trails: divide 500 by the focal length of your lens and you will obtain the maximum exposure time. 1 year ago. Bonjour,Merci pour ce super design, déjà tout imprimé et en train d'assembler le tout. The DSLR stays motionless during exactly 3.523s so according to the 500 and 300 Rule : the equatorial mount will work with lens below 142mm focal length on a full frame and below 85mm on a crop sensor. The hardest bit at the moment is the DSLR controller part. A bit like this: https://www.instructables.com/id/Star-Track-Arduino-Powered-Star-Pointer-and-Tracke/I hope it help a bit. The base of the platform is similar to the top but extends further toward the north to accommodate bearings and a motor. But there's one more thing we need to add. He also has a PDF with all the dimensions that you can use to build your own if you don't feel like doing the maths. Although I don't have a telescope, this is very cool! To begin with, we'll cut the top and base of the platform in a triangular shape. Reply This would work for an Arduino based solution, as well as passing commands to a properly aligned telescope via hand controller. Diy Telescope Radio Astronomy Space And Astronomy Arduino Projects Electronics Projects Diy Projects Barn Door Tracker Astronomical Telescope Guns And Ammo. Your photo showing the motor assembly: it appears that you have used a threaded tube or some thing? Power on the equatorial mount and enjoy . The vertical segments should be on their bearings. You can see that even at 196s exposure, stars stays dots (except in the corners due to chromatic aberations) however there is a motion blur on the trees. Did you make this project? So this must be a specific cog that you used? I thought the curve of the vertical segment is cut to the specific latitude and the device will be accurate only in that latitude. 24 days ago The DSLR stays motionless during exactly 3.523s so according to the 500 and 300 Rule : the equatorial mount will work with lens below 142mm focal length on a full frame and below 85mm on a crop sensor. Merci en tout cas ! Around the threaded rod is a tube (plastic or metal) covered by a rubbery material. This is an old thread but I am hoping I will get a reply from ThomasJ1. The control utilizes a calibration method and various settings which enable you to control any type of mount (not just equatorial and altazimuthal) pointed at any direction.. Please, if you can help me with few practical considerations. Hi,It depends what you are trying to achieve. The stars probably won't stay centred on your first try. You can now place the top part of the platform onto its base. In order to drive the motor with 4076 steps, there is this Arduino library by tyhenry. Like a standard equatorial mount, equatorial GoTo mounts can track the night sky by driving the right-ascension axis. Mais le moteur ne fait que vibrer, il ne tourne pas. They should both be horizontal. As you will know if you own a German equatorial mount then the declination axis … You can then glue it under the top part of the platform, making sure that the axis of the rod goes through the polar axis (top corner of the triangle in the diagram). In the mid-price range, the Sky-Watcher EQM-35 Equatorial GoTo Mount is another excellent option for beginners to intermediates. You can now observe and take photos of galaxies, nebulae and planets at high magnification. Pre-drilling the holes will help. 2019’s Arduino Education thematic year: robots, satellites, radio communication systems, weather monitoring devices, maps, and more related to Space technology Saved by Christopher Fandrich. If you are above it, you will need to raise the north side (2 rubber feet). About: I'm a French mechanical student, I like to design, make things and share them here. However when I go to print, it shows only one page with the bearings only.Thank you. The parts are displayed on the pictures above. How to couple it to the 3/4" tube or rod? The scale is 1:1. J'ai modifié le code pour l'Arduino pour un usage sans led ni interrupteur, si tu peux me dire si c'est ok : *******************************/* Direct Mode Arduino -> Motor */#include CheapStepper stepper;void setup() {}void loop() {stepper.step(false);delay(3523);}*******************************Par contre sur le schéma de câblage, là je sèche un peu, j'aurais tendance à faire comme en PJ.Côté Arduino j'y connais pas grand chose, certains nanos sont avec des pattes et d'autres sans, comment acheter le bon ?J'ai fini toute la partie impression 3D, il me manque juste les roulements et le contrepoids. My iOptron Skytracker is great for shorter lenses and exposures but I cannot load it up too much before it … If you want them sharp too, you will have to add a motionless picture of your foreground and mix those into Photoshop or Gimp. Most of the things I build usually relate to either astronomy, physics or woodworking in general. This is optional but it helps to secure your instrument in place. Some of them are big and really powerful in order to rotate enormous telescopes but some others are small carrying only a DSLR that is what I wanted to make. Split ring and equatorial mount/ tracking platform for dob. My wife and I spent a good portion of this time driving around the beautiful American Southwest and … Platform. You could whack it with a hammer and vibrations died in less than 2 seconds. Its very easy to use and most suitable for Refractor Telescopes up to 100mm in Aperture. I did not find any on line.The 72 teeth cog: source? It can also be useful to make timelapse according to earth's rotation. I'm not sure if I should be sad or happy, BUT the two things I KNOW that I must do is to start building your wonderful design and give you my heartfelt vote. They will hold your instrument in place (telescope, tripod).- 5/16" threaded rod which will serve as the polar axis.- 10 skate bearings (polar axis and circular segments rollers)- 3/4" threaded rod to serve as a worm screw- 72 teeth cog- 4 rpm DC motor- 3 hockey pucks- Screws and small pieces of wood. Salut Simon, comment alimentes-tu l'arduino dans ta solution ? www.stellarjourney.com. Impressive and well documented, as always! Et je ne sais pas trop comment chasser le support à l'intérieur du trou qui sert à faire passer la vis qui verrouille le support sur l'axe de rotation ':-). (90 - 60 = 30). J'ai du plomb chez mon père, j'vais peut-être mouler un poids, faut que je pèse mon APN + objo pour dimensionner le contrepoids. Is the height of front polar axis (the space between upper and lower board) same as the height of the back (vertical segments)? One of them is powered by a DC motor. An equatorial mount has one rotational axis parallel to the Earth’s axis of rotation. We will add it now. You just need to make sure you keep the position of the polar axis (see diagram) and the length, position and inclination of the 2 straight sides. Y'a-t'il une raison particulière de le faire en 2 parties ? Tne BETA BRANCH, if present, is a "snap-shot" of the MASTER where we have reached a point of apparent stability. - 1/4 inch plywood for the circles (optional). This provides access to … The world's first standalone Arduino-based telescope control Goto. - 5/16" threaded rod which will serve as the polar axis. The equatorial axis is known as right ascension, while the perpendicular axis is … Je n'avais pas fait cette pièce car j'ai trouvé que la tête du trépied remplissait déjà bien cette fonction, cependant si j'ai bien compris tu enlèves la tête de ton trepied pour la mettre au dessus (sur la pièce support) c'est une bonne idée ça évite d'acheter une rotule en plus :)Merci pour ton retourEn attendant la V2 ça attendra un peu ... J'ai imprimé une version mais elle ne marche pas si bien que ça alors j'ai laissé le projet de côté pour le moment :(Hâte de voir ta réalisation avec ta pièce remixée :). The more precise your alignment, the longer you can keep the objects centred in the eyepiece or on the sensor of your camera. Arduino can actually turn off the power to the telescope mount itself - handy when you detect an problem. De toute façon, Colorful Rope Macrame Knot Necklace With Tassel, https://www.amazon.fr/DSD-TECH-batterie-emplacements-int%C3%A9gr%C3%A9s/dp/B07CM4N56Z/ref=sr_1_6?&crid=2SG86CQ852RG5, 1x Arduino (I used nano but every arduino will work), 2x push button (I used a double momentary toggle switch), 1x metal tube 105~110 mm long with external diameter according to the bearing (here 10 mm), 1x Tripod (mine is a Manfrotto Compact Advanced), CAD software if you want to modify the files (fusion 360 is free for students), Screw the motor in place with 2x M2.5 screws + nuts, Hammer the bearing on the tube, 20mm from the end, Place those in the corresponding hole of the main body (red piece), Place a washer or anything that can be a spacer here, Insert 4x M2.5 nuts where it is needed (here is the example on the big gear wheel), Screw the big wheel and the support on the tube, tight them enough to make a mark on the tube, Remove those 2 pieces and drill 2 holes at the marks, Screw the big wheel and the support on the tube, Insert the M8 nut into the support piece, Screw a camera ball joint with a Kodak screw, Add counterweight on the threaded rod to balance the mass of the DSLR. I could have made a 45 degree platform with a conventional vertical segment but I would have to raise the south side so much that the telescope would be quite off balance.The vertical segments only depend on the distance from the platform axis. If the top is not horizontal, the telescope may fall over at some point.The curve is specific to the platform, not to the latitude. This includes the L298 unit, the encoder counter, various hall sensors for doing PEC and fuses and relays. the top corner of this shape is where the polar axis is located. Here is my first photography with the mount : Here is a picture of th milky way,Canon 750D, Equatorial mount, Canon 18-55mm stm (at 27mm), f/4, iso1600, 196s. How to Build an Equatorial Mount for Long Exposure Astrophotography: Last Fall (2011) I took full advantage of the fantastic sabatical policy where I am employed. Reply Documentation on the NexStar HC and Aux protocols: 1. I enclose the circuit and firmware.Best wishes, Denis.#include CheapStepper stepper;void setup() { pinMode(A1, INPUT); pinMode(A2, INPUT);}void main() { while (digitalRead(A1) == LOW) { stepper.step(false); delay(6); } while (digitalRead(A2) == LOW) { stepper.step(true); delay(6); } stepper.step(false); delay(3523);}. Very nice, I'm moving to a place where I should be able to see more sky at night. A summary about the DIY german equatorial telescope mount I have made and used for astrophotography in my observatory. Place the star tracker on the tripod (tube pointing to the north). So for 50 degree as well as 30 degrees, all you do is raise the south side by a fixed height. The second drawing shows an upside down V shape. Place the platform flat on the ground and turn the pointed side (polar axis) to the south. rDUINO Scope is based on Arduino Due board and utilizes the code and few sensors in order to collect needed data to control the telescope mount. With this instructable you can design your own or you can use my STL files and follow the assembly tutorial. On that rod, we'll put a system of worm and gear. All available open source telescope controls either use Raspberry Pi, which consumes a lot of power, or uses Arduino as extension to a computer, smart phone or tablet. and now that I've built a machine that's big enough to actually cut this, here you supply wonderfully simplistic build than I was envisioning. It will make your head hurt. I used a 3/4" threaded rod to make the screw. You can now take long exposure images of your favourite constellations, nebulae and galaxies. J'en au utilisé vraiment aucun ;) les trous parallèles au plateau s'impriment bien en général, Je me demande si je vais pas prendre ça tout simplement pour alimenter l'arduino : https://www.amazon.fr/DSD-TECH-batterie-emplacements-int%C3%A9gr%C3%A9s/dp/B07CM4N56Z/ref=sr_1_6?&crid=2SG86CQ852RG5 y'a même l'interrupteur on-off. This is a USB controller for Celestron NexStar AUX protocol implemented in Arduino.It substitutes the hand controller, receiving the commands from the PC (HC procotol)and communicating with the mount (AUX protocol). Here is the code to put in the arduino board if you live in the northern hemisphere. A threaded rod serving as the axis will be fixed at this location. Sky-Watcher EQM-35 Equatorial GoTo Mount. THERE ARE SEVERAL GITHUB BRANCHES OF ONSTEP: 1. OnStep. No new features are added and only bug fixes where necessary and safe. For this project I used Fusion 360 to design all the pieces. This project was designed to be much cheaper commercial equatorial mount trackers and to be easily (and cheaply) modified and customized, a feature many other trackers lack. Tools & Parts. First, level the base of the platform and make the top and base parallel. Same amount no matter where you are? You mention "below 60 degrees raise the south side and above 60 raise north side (2 pucks)". However, with the crop factor of my DSLR it turns out to be the "300 Rule". 3 years ago. 3/4" threaded rod you used as the worm: I assume it is 10 threads per inch? Building an equatorial mount with autoguiding for astrophotography - posted in ATM, Optics and DIY Forum: I am in the process of designing and building an equatorial mount for tracking and guiding of a DSLR camera + lens and/or a small telescope (perhaps up to an 8 SCT optical tube). We will now install the vertical segments onto the top part of the platform. Le boitier contenant l'arduino et la carte contrôleur du moteur pend à côté ? If 3D print, can you please provide the STL file. Arduino Star Tracker. Since laser pointers are a perfect way to point stars, I thought a laser pointer with a GoTo mount would be a perfect tool for locating stars and to track them. Salut Simon !! Here's a list of material: - 1/2 inch birch plywood for the base, the top and the curved segments.- 1/4 inch plywood for the circles (optional). They will hold your instrument in place (telescope, tripod). Those pictures make it worth it :-). https://www.sdp-si.com/products/Gears/Spur-Gears-72-Pitch.php. The condensator has 100nF. You mount your camera on the “door,” then aim the hinge straight at the North Star, Polaris. More information... More ideas for you Called GoTo mounts. But first, what is an equatorial platform? The device I made is tracking stars, that allows to get rid of that rule and shoot as long as we need. The pictures are beautiful, you got my space vote :). You will have to push it back to its original position (west) and re-align your instrument. 400. These are the position of my telescope feet. This is enough for common deep sky objects since you can stack multiple photos to get the same result as a single longer exposure. Avec la densité du plomb ça devrait permettre d'en mettre peu et proche du centre de rotation, la tige M8 est relativement souple quand même...Merci. Et j'ai aussi pensé à un réglage de l'inclinaison par vis sans fin pour me faciliter la vie. The powered one has the bearings mounted into its support (thick plywood). Is it based on latitude of your location? The drawings above shows 3 circles on the top of the platform. I'd still like to build it myself, do you have any advice? An equatorial mount is much more compatible with the celestial sphere. I see an Allen screw in that rod. As an output the rDUINO Scope controls 2 stepper motors representing RA and DEC movement of a German Equatorial Mount (GEM). Your platform is almost complete. This fact lead me to a triangular design with a polar axis in the south and 2 curved sections toward the north. Then adjust the counterweight to balance the rotating part, and put back the small gear wheel. So, I have decided to switch to this design. Here's a list of material: - 1/2 inch birch plywood for the base, the top and the curved segments. J'ai même essayé un programme simple de la librairie de CheapStepper, mais uniquement des vibrations. As you know, Earth is rotating, so it is not easy to photograph stars because they leave star-trails. In the AR axis will be inserted Vixen polar scope (2573), the same used in Sphinx mount. It is fairly easy to use as long as you can see Polaris. Unless you hav a fork mount, in which case forget it. I made it with some changes to make the code more reliable. Merci pour ta réponse très complète !Je pense l'alimenter avec un accu 18650 et un module MT3608 comme Christophe Fredon le proposait plus bas.Et pour éviter le pendouillage, je vais modifier le boitier de commande pour qu'il se fixe d'un côté de ma charnière (en utilisant une vis plus longue) et soit j'ajoute un truc pour que ma "batterie" se fixe dessus, soit je fais le même système de l'autre côté de la charnière pour la batterie.Je mets l'image de ma charnière. Je rencontre toutefois un problème avec le moteur, et j'espère que vous allez pouvoir m'aider! The 30 degree angle is because I live a latitude 60. Thank you Larry, I wish you good luck with the build and don't hesitate to post comments or send me a message if you have any questions. To ease movements a little, the polar axis support can have one or more skate bearings inside. Yes, I am using a 3/4" threaded rod but a bolt will work the same way. Building an Equatorial Mount. This will create a strong but smooth circular motion. rDUINOScope is the first Arduino-based, stand alone device allowing amateur astronomers to enjoy the night sky. By rotating the part, it can be cut on a laser cutter with a 20x32 bed (2 layers of 1/4 in plywood). J'en discutais avec un oncle qui fait de l'astro (qui veut s'acheter la StarAdventurer depuis des années) et il me proposait d'ajouter des éléments pour aider au réglage comme un vernier ou un marquage des axes. It is called "equatorial mount", it is commonly used with a telescope because with only 1 motor it tracks stars. The motor is a 28BYJ-48 stepper motor. yes of course1rev/23.934444h on main axis6.25gear ratio (100/16)-> 1rev/3.8295h on motor axis4076 steps per revolution0.0009395h/step=3.382s/step=3382ms/stepSo just replace the delay value from the program by 3383 (instead of 3523):), Question In order to cancel vibrations from the ground, and to make is more stable, we'll add 3 rubber feet. The side with the bearings should be facing north. The overall shape doesn't really matter. See more ideas about telescope, telescopes, amateur astronomy. J'ai essayé de changer l'ordre des cables, et même essayer 2 moteurs et 2 drivers, rien n'y fait... des idées? Great Idea! This project uses a Feather M4 and Trinamic's TMC-2226 stepper motor driver to enable you to take long exposures of the night sky with just about any camera. If you want close-ups of the ISS for example, you'll need a telescope, a robust mount and a fairly high slew speed.Another thing to note is that satellites are not following the ecliptic, (except the geosynchronous ones of course), so you don't really need an equatorial platform for this task.I would go with an Alt-azimuthal mount (can be handmade) with high speed stepper motors.Then you'll need to use an arduino or raspberry pi or a computer to control the mount.