arduino equatorial mount

- 1/4 inch plywood for the circles (optional). Or did you drill a hole in the rod? 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. 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. 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 ':-). 5 months ago. You will have to push it back to its original position (west) and re-align your instrument. 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. 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 drawings above shows 3 circles on the top of the platform. ... 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 is enough for common deep sky objects since you can stack multiple photos to get the same result as a single longer exposure. On that rod, we'll put a system of worm and gear. What does my Arduino … It can also be useful to make timelapse according to earth's rotation. 5 months ago. A bit like this: https://www.instructables.com/id/Star-Track-Arduino-Powered-Star-Pointer-and-Tracke/I hope it help a bit. For the base, you can have the same shape but make the north side longer and extend the south side a little. It is called "equatorial mount", it is commonly used with a telescope because with only 1 motor it tracks stars. Instead of buying the 3 foot rod, pretty expensive, I am planning to just use a section of 3/4" bolt. I have seen a lot of fine instruments produced by our members and thought I might want to try my hand at a couple of projects. 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). With this instructable you can design your own or you can use my STL files and follow the assembly tutorial. I'd still like to build it myself, do you have any advice? So this must be a specific cog that you used? The motor is a 28BYJ-48 stepper motor. I am looking forward to my version of this. As a big fan of astrophotography and 3D printing I had to build my own equatorial mount for my DSLR. The reticle illumination is provided by three red LED directly inserted into the mount. However when I go to print, it shows only one page with the bearings only.Thank you. If you are above it, you will need to raise the north side (2 rubber feet). Sky-Watcher EQM-35 Equatorial GoTo Mount. 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. Go and read the ASCOM documentation about pier flips and side-of-pier calculations. 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. The Arduino Mega 1280 is housed in a box on the telescope. How long a segment is needed as a worm gear? J'ai même essayé un programme simple de la librairie de CheapStepper, mais uniquement des vibrations. 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. Monture Equatoriale motorisée legere fabrication maison pour l'astro photographie.Light DIY equatorial mount for astrophotography. The RELEASE BRANCHESare well tested and what most should use. Would the angle be different for a different location?2. Saved by Christopher Fandrich. This would work for an Arduino based solution, as well as passing commands to a properly aligned telescope via hand controller. Arduino can actually turn off the power to the telescope mount itself - handy when you detect an problem. The final diameter should be about 1/2". I used an Arduino Nano as microcontroller paired with a ULN2003 to amplify the signal from the digital out pins for the motor. Super boulot ! Documentation on the NexStar HC and Aux protocols: 1. J'ai essayé de changer l'ordre des cables, et même essayer 2 moteurs et 2 drivers, rien n'y fait... des idées? The second drawing shows an upside down V shape. My main hobbies are astronomy, astrophotography and 3D printing. Although I don't have a telescope, this is very cool! Merci de ta réponse. NexStar AUX Protocol My iOptron Skytracker is great for shorter lenses and exposures but I cannot load it up too much before it … Well done! A summary about the DIY german equatorial telescope mount I have made and used for astrophotography in my observatory. Je n'ai pas l'impression. The device I made is tracking stars, that allows to get rid of that rule and shoot as long as we need. 1 year 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). These bearing will allow your platform to move smoothly. 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. 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). Impressive and well documented, as always! 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. Hi,It depends what you are trying to achieve. You can now observe and take photos of galaxies, nebulae and planets at high magnification. Solder wires according to this schematic: Then plug the motor and clip the lid on the box. Split ring and equatorial mount/ tracking platform for dob. Un test pour l'instant. If 3D print, can you please provide the STL file. It doesn't have to be too precise. 21 days ago, Hi! It was the best one that I could find for a star tracker. My wife and I spent a good portion of this time driving around the beautiful American Southwest and … Drill a hole all the way through. The pictures are beautiful, you got my space vote :). 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. I will use the stepper motor, but this time, driven by an Arduino board and stellarium. About 3 years ago, I decided to make one of those CNC router things to help me make a Eq. About: I'm a French mechanical student, I like to design, make things and share them here. But first, what is an equatorial platform? This fact lead me to a triangular design with a polar axis in the south and 2 curved sections toward the north. Arduino Control This year I have added my homemade Arduino GOTO telescope control system and got rid of the hopeless Meade system. So, I have decided to switch to this design. More info about this will be appreciated.I like the idea of fixing the motor stand with butterfly nuts, perfect.I downloaded the design. THERE ARE SEVERAL GITHUB BRANCHES OF ONSTEP: 1. Computerized telescope goto control based on Arduino driven stepper motors for german equatorial mounts. How to couple it to the 3/4" tube or rod? I used two Arduino's in this project(due to the lack of digital pins).One to control the … Since I am living in the north, Polaris sits quite high in the sky. You mount your camera on the “door,” then aim the hinge straight at the North Star, Polaris. To ease movements a little, the polar axis support can have one or more skate bearings inside. Tne BETA BRANCH, if present, is a "snap-shot" of the MASTER where we have reached a point of apparent stability. 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. Your design is so much easier than most others. 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 We will now install the vertical segments onto the top part of the platform. Yes, I am using a 3/4" threaded rod but a bolt will work the same way. You can buy fancy motorized “equatorial mounts” for telescopes and cameras, but it’s way cheaper and more satisfying to build your own simple “barn door” tracking mount using a long bolt or threaded rod as a drive screw. Just drill a hole on each end. Is it based on latitude of your location? 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. 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). As you know, Earth is rotating, so it is not easy to photograph stars because they leave star-trails. 4 years ago. Your platform is almost complete. Some may have 40 or 20, hence the different vertical segments for each platform. The world's first standalone Arduino-based telescope control Goto. 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. I used a 3/4" threaded rod to make the screw. 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. Mechanics, Part 2 - Install the Wheels. The overall shape doesn't really matter. I see an Allen screw in that rod. Like a standard equatorial mount, equatorial GoTo mounts can track the night sky by driving the right-ascension axis. A good and cheap option is to screw 3 hockey pucks. One of them is powered by a DC motor. 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. 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. Bonjour,Merci pour ce super design, déjà tout imprimé et en train d'assembler le tout. The stars probably won't stay centred on your first try. You can now take long exposure images of your favourite constellations, nebulae and galaxies. 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. You can now slide the polar axis inside. 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. In this Instructable, I will show you how I designed an equatorial platform for my telescope. The other one consists of 4 bearings mounted onto a 5/16" screw. This will create a strong but smooth circular motion. Et j'ai aussi pensé à un réglage de l'inclinaison par vis sans fin pour me faciliter la vie. Will that work? By rotating the part, it can be cut on a laser cutter with a 20x32 bed (2 layers of 1/4 in plywood). 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. 25 days ago, How the manfrotto is attached to the tripod, Thanks a lot for the tracker! I did not find any on line.The 72 teeth cog: source? 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. 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. ).À quoi sert la vitesse "rapide" ?J'ai fait un remix sur Thingiverse afin d'adapter la base à mon trépied photo ;)Merci d'avoir partagé ta réalisation.Hâte de voir la V2, Reply Few questions:1. So for 50 degree as well as 30 degrees, all you do is raise the south side by a fixed height. I am aiming to be able to control the stepper motor over WiFi with an esp8266. Now measure the distance needed for the support of the polar axis. (90 - 60 = 30). They will hold your instrument in place (telescope, tripod). This includes the L298 unit, the encoder counter, various hall sensors for doing PEC and fuses and relays. You can now place the top part of the platform onto its base. I suppose I could use the standard plumbing 3/4" pipe. NexStar HC Protocol 2. 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). Same amount no matter where you are? Unless you hav a fork mount, in which case forget it. This project aims an automatic control for telescopes, is based on Arduino and is low-cost!. You mention "below 60 degrees raise the south side and above 60 raise north side (2 pucks)". www.stellarjourney.com. Ceci est un exemple, je n'ai aucune idée de la variation du code. 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. Share it with us! Very nice, I'm moving to a place where I should be able to see more sky at night. 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. It will make your head hurt. I'm actually looking into ways to photograph satellites (the artificial kind) but I think I'd need a platform more aggressive than this. The base of the platform is similar to the top but extends further toward the north to accommodate bearings and a motor. It is fairly easy to use as long as you can see Polaris. The hardest bit at the moment is the DSLR controller part. Its very easy to use and most suitable for Refractor Telescopes up to 100mm in Aperture. See more ideas about telescope, telescopes, amateur astronomy. 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. Description. Did you make this project? Did you make this project? Usually the newest (highest revision) RELEASE is recommended. (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. 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. The side with the bearings should be facing north. Arduino Star Tracker. 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. 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. After all that time I've built 4 or 5 CNC routers (each bigger-more powerful-faster-etc.) Et merci de partager votre projet. Most platform on the internet are designed for mid latitude observers. Merci en tout cas ! In order to function properly, the motorised bearing rod should extend a few inches to the north side. The cog has 72 teeth and the DC motor turns at 4 rpm. The gears teeth have to mate the worm. 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);}. This is how I built it. 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 ;). Install the altitude wheel directly to the telescope, using the … Thomas, thank you very much. An equatorial mount is much more compatible with the celestial sphere. - 5/16" threaded rod which will serve as the polar axis. Please, if you can help me with few practical considerations. In order to drive the motor with 4076 steps, there is this Arduino library by tyhenry. 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. rDUINOScope is the first Arduino-based, stand alone device allowing amateur astronomers to enjoy the night sky. This provides access to … Si je fais une v2 je rendrai cette partie monobloc je pense. 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. I made it with some changes to make the code more reliable. I designed all the parts using Fusion 360. on the 2nd picture, pieces with a "*" are not 3D printed. Place the platform flat on the ground and turn the pointed side (polar axis) to the south. Salut Simon, comment alimentes-tu l'arduino dans ta solution ? on Introduction, Hi Simon,Can you post some simple instruction how to adjust rotation speed because of gear ratio changes? Tools & Parts. Reply The fact that platform will no longer be level does not matter?Thank you for your help. Si oui dans quel ordre ? 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. 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. An equatorial mount has one rotational axis parallel to the Earth’s axis of rotation. Here is the code to put in the arduino board if you live in the northern hemisphere. Salut Simon !! This is optional but it helps to secure your instrument in place. First, 1rev/23h56min4s is slow, very slow. Those pictures make it worth it :-). However, in my case, the axis is 60 degrees from horizontal. 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. A threaded rod serving as the axis will be fixed at this location. 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. Et le moteur semble bien tourner ! Here's a list of material: - 1/2 inch birch plywood for the base, the top and the curved segments. 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. As I live in the north hemisphere at roughly 45° latitude I tilted the Manfrotto socket by 45° the adjustments will be ensured by the tripod head. Diy Telescope Radio Astronomy Space And Astronomy Arduino Projects Electronics Projects Diy Projects Barn Door Tracker Astronomical Telescope Guns And Ammo. 400. Question Your photo showing the motor assembly: it appears that you have used a threaded tube or some thing? If tube, source please? The vertical segments should be on their bearings. The powered one has the bearings mounted into its support (thick plywood). 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). OnStep. For the moment i could just control the DSLR with something like this.Thanks Again. But I don't think they thread it more than just an inch or so at the end. 2019’s Arduino Education thematic year: robots, satellites, radio communication systems, weather monitoring devices, maps, and more related to Space technology However, living above 60 degrees latitude, I needed to design my own platform. To begin with, we'll cut the top and base of the platform in a triangular shape. 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. 3 years ago. 2. Feb 13, 2020 - Explore Gary Zapotoczny's board "homemade telescope mounts" on Pinterest. Je rencontre toutefois un problème avec le moteur, et j'espère que vous allez pouvoir m'aider! As you will know if you own a German equatorial mount then the declination axis … Is the height of front polar axis (the space between upper and lower board) same as the height of the back (vertical segments)? Once the speed is set, your instrument should stay aligned on the objects you're aiming at. This video shows how to build a dslr star tracker allowing to rotate the camera in sync with earth rotation, i.e.one full turn in 24 hours. Mais bon on ne règle pas l'angle tous les jours et à concevoir et modéliser c'est une autre paire de manches. 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. Pre-drilling the holes will help. You will need to adjust the speed of your motor while keeping your eye in the eyepiece. As an output the rDUINO Scope controls 2 stepper motors representing RA and DEC movement of a German Equatorial Mount (GEM). The more precise your alignment, the longer you can keep the objects centred in the eyepiece or on the sensor of your camera. 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. You can use a stepper motor or a DC motor. Technically, it rotates at the same speed as the earth but in the opposite direction. The parts are displayed on the pictures above. 24 days ago I 3D printed all the parts on my Creality Ender 3 with those settings: the total printing duration is roughly 12h. You can use the SVG file attached. You will notice that the threaded rod for the polar axis has no support yet. We can start by assembling the polar axis. Since I aquired an Losmandy G11 mount without any goto provision I decided to create my own solution. No new features are added and only bug fixes where necessary and safe. You could whack it with a hammer and vibrations died in less than 2 seconds. My platform lets me take up to 15 seconds exposure with a 1000 mm focal length. 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 ! First I had to design a two-axis mount. 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. If you are below latitude 60, you will have to raise the south side. First, level the base of the platform and make the top and base parallel. Please note that this design is one out of many. In order to cancel vibrations from the ground, and to make is more stable, we'll add 3 rubber feet. 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 ? I will try to incorporate your idea into the tracker. Screw the DSLR on the ball joint, and add the counterweights on the other side.

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