Julian5

Unfortunately, EMCORE sold their photovoltaic company 2 years ago and looking at other companies like SolAero they seem to have 7,500$ minimum orders.....

Thanks a ton I'll contact emcore asap and take a look at the book

Hey ShredBird, Thanks, the support is really appreciated and I will definitely need some help when it comes to wiring everything up especially since I'm planning to design a voltage regulator circuit for the solar panels and I might need help with hooking up the camera FIFO for sstv (similar to a buck converter). As far as the tips you mentioned above here are a couple of things I'm doing and let me know if there's anything I can improve on. 1. I'm still deciding on the parts but most likely 6cm x 6cm PCB with 1 solar cell on each side, A temperature sensor, an accelerometer and an SSTV camera. 2. I still need to see whether there is a remote possibility of launching this thing on its own but Most likely will need a 1U mothership for launch, that's a whole other project haha. As far as power budget I have a spreadsheet with how much current every single component will draw and the smallest gallium arsenide solar panel I can find (with a slight current headroom) And as far as telemetry I'm also making a list of each set of data im sending and the lowest power consumption / Mw needed to send them. 3. I decided on not using deployable solar panels since it would add too much complexity and be too fragile on such a tiny satellite. 4. I actually did not know that about lead, thanks! I'll make sure to solder the components on with lead-free solder. 5. I definitely agree with this one, Building a satellite involves so many areas of engineering and is a great possibility to learn. Also since you seem to be experienced in this do you know where I could get gallium arsenide solar panels, I have contacted some suppliers but I'm still waiting for a response.

Yeah, the top third will house the components and the bottom will be all solar panels. The PCB will be much more crowded once I add the communication components and sensors

That's some pretty good ideas you have there, I'm currently looking at some forums for some partners! Update: I have started creating the PCB's and have ordered some of the SMD components. I have also started making some of the code for the voice telemetry system since this satellite will probably have a voice telemetry system. (The pcb's are missing most of the parts)

yeah, I meant storage, my bad.

Its dead simple, the CubeSat is tied to a parachute and the parachute is tied to a balloon, the balloon gets released before it pops (monitored with Fpv camera) and a GSM GPS tracker is fitted with the CubeSat to find it. As its a first prototype I don't mind if it gets damaged since it transmits a live feed, Update: I think I came up with a name for the Project: AttoSat Atto meaning 1 trillionth (as in a really tiny thing), I also thought about the name FlatSat since the current design is a flat PCB with solar cells on each side. The main components of the first prototype have more or less been chosen: CPU: ATMEGA328P 32kb storage, 2kb Ram, -40 to 85c, 1,8v to 5.5v Communication: CC1101 500kb link, 15.7ma, -40 to 85c Pcb manufacturer: Pcbway Sensors: TBD I have started to contact satellite solar cell manufacturers for information on High-efficiency gallium arsenide cells, the PCB will have cells on both sides to avoid the need for any directional control via electromagnets or gyroscopes, I'm also looking at adding deployable solar panels but they will most likely not be used since I'm using the lowest possible power components. I also will not use any sort of batteries in this model since they would most likely require heating.

Yeah getting anything into orbit requires lots, and I mean lots of licenses and regulations to be approved.

you will be surprised to know its actually just wire, The Arduino senses electricity coming from it. However, it is not very accurate and a more precise voltage sensors would make it more precise. It's actually an electromagnetic interference detector or EMF. Shielding the Arduino from the wire sensor is also an issue to avoid interference Here is a video about one:

yeah, I still have a couple months/year to go. As far as If I launch, it lots of factors come into play. 2 possible scenarios could occur if I decide to launch it. It mostly depends on how I launch it, the main issue is that the only form factor that NASA, SpaceX, and other space launch companies accept for their launches are 1U, 2 U, 3U etc which are 10cm x 10cm segments of under 1kg and those launches cost over 10.000 USD per segment. In this case, a 1U CubeSat will need to be designed as a mothership to launch the smaller picosatellites. NASA sponsors a limited amount of CubeSats every year and provides the launches free of cost, however, I live in Europe and the ESA has more limited funding assigned to cubesat launches so it is highly unlikely I will get a direct sponsor from them. In that case I would probably start a fundraiser or get sponsored by other companies for the project like I have done before, the main issue with sponsors is that I am a single person and not an educational organization like a school or a university so it is hard for them to sponsor me. However if by the time I decide to launch it/them there is an option to launch these picosatellites without a 1U mothership then the cost will most likely be within my budget (I'm suspecting below 1,000USD since these satellites will weight below 10g). Considering this, The research and development costs of actually making one of these and sending it, along with all necessary radio licenses and a Ground station will be in the several thousand and I will surely need to start a fundraiser or get sponsored. Well, I will most likely need help with the software so if you know how to code in C hit me up

Well, a couple months ago I decided to build a CubeSat to learn a bit more about them and collect data. It was powered by an Arduino nano and measured electromagnetic radiation, temperature, humidity, pressure, altitude, and light. It featured a fully working solar panel array, charge controller, and radio transmitter. However, due to radio license costs, I had to modify it to store data on an SD card for testing. I was about to test launch it on weather balloon but once again due to strict European launch regulations and the fact I was really busy moving I was unable to launch it. Here are a few pics of the initial prototypes I was also working on adding a CMOS camera but was having issues with power restrictions. However, as you can tell the initial board (can't find the pictures with all the sensors soldered) is not very neat and the 3d printed housing is not ideal. So I'm going to build a new satellite with a slightly different concept, the idea is similar to kicksat (http://kicksat.github.io/). I would like to make the smallest satellite possible with as many sensors as possible and maybe even a camera, I will also design and manufacture the PCB with SMD components. So really its just a tiny PCB with solar cells, a chip (will most likely use an atmega) and a bunch of sensors, however, my ultimate goal is a CMOS camera. For now, I'm the only person working on this project and I'm confident I can construct the initial prototypes and their corresponding software, however, I'm making this post to share the idea and see if anyone wants to collaborate. The ultimate goal probably isn't to launch this thing but to have fun along the way. I might post updates on here or make another forum post. Best Regards, Julian

Famous Nazi Follower tries to brainwash audience on low-quality tv show circa 1942 (Colorized)

Team viewer?

im sorry to hear, good thing I did some research before trying

I just found some facebook posts about the page and they all say its a scam

Yeah what I thought, showed up on facebook ads

Ill wait and see what everybody else thinks, The prices are that cheap from a flash sale but you never know.

I'm currently looking at buying some electric scooters and I found this web page but the prices seem too good to be true, I mean 18€ for an electric skateboard and 99$ for a normally 1000$ scooter. I'm pretty sure its a scam but I'm just asking in case I'm missing out on some deals... I can find any scam reports either.

Are we banned off twitch yet?

and those plants in the back at 6:33

Forget about the cooler, just as long as intel include some rgb Leds on the cpu it'll be fine

I think @LinusTech should design a cooler for intel as they seem to be doing so well in the diy cooling region

there should be no issues with interference but you might as well disable the wifi on the router if you dont use it.

might seem obvious make sure no screws at all are holding it in (check every side) You might need to use some elbow grease to take it out but be careful as abrupt movements can damage the disk

if you will be using the access point for all your devices you might as well disable the router's wifi and use it as a modem unless you want 2 networks.