For the batteries, look for disposable vape pens, they have single cell lipo batteries of varying sizes, you can wire them in parallel for more capacity and in series for more voltage, these will need balance charge leads
That battery with the built in charger is awesome. I would love to be able to use that but unfortunately, I'm using the EggTimer Apogee controller and it needs a 1S Lipo at 3.7V. I used the Altus Metrum EasyMini a few years ago until I had an ejection failure and it pummeled into the ground and it turned into $80 of tiny bits.
"Lipo batteries are great, but you have to charge them. So instead, I use a USB-charged battery with unknown internal charging and buck/boost circuitry." Joshing aside, great video! Love the pill bottles, I'm going to have to pick some of those up for the next build. I have a pair of Eggtimer Quantums to set up in a proper LOC kit, which will be my first dual deploy setup with redundancy. I love that the eggtimers can arm remotely with wifi from the phone, but I will be adding a rotary switch too just to make sure there are no objections to my setup at the field...thanks for the suggestions!
That is a great question and here are my thoughts. I use the Jolly Logic chute release on a Level 1 style rocket and dual deployment on an L2 rocket. I use the chute release on an H - I flight with motor ejection. It's simple and works well. A L2 rocket will be larger and heavier so it will benefit from a larger chute that requires more black powder to move everything out of the payload bay. Shear pins should be used on the nosecone so it is not bumped out at apogee. An apogee deployment will result in a long walk followed by much grumbling 😎 JL chute release tips. ruclips.net/video/9_wr-WNnYcE/видео.html This is an electronics bay I built a few years ago. ruclips.net/video/0PVbYNHOxus/видео.html Ground testing is mandatory! ruclips.net/video/Qopc6lgg_gA/видео.html
Will you share the info for the Ematch Connectors with the Knurled knobs attached to the bulkheads...... My Charge wells have similar ones but are built into the well and are pretty small Thank you !!!! `Glasspack
The knurled brass nuts can be purchased through Amazon or a local hardware big box store. The best prices can be found on eBay. The brass nuts come in smaller sizes along with metric. I rub the mating surface on the bottom with sandpaper to clean up the connection. amzn.to/3XE67x0
Do you wire both of your Altimeters to one switch? I have been wiring up two switches......Didn't realize that you could do this with one? Is there an advantage to just the one switch besides AV space? Thanks for your amazing videos...I have learned a ton!!!!!! :)
Yes, I use one switch to power both altimeters. Two circuits are closed when the rotary switch is turned to the 220 position. Use a continuity tester to verify the pins. I have seen a number of very large rockets use one switch. True redundant dual deployment would require two switches. It seems unlikely to me both poles would fail at the same time. I find the most common failures are, low battery, poor connection, and failed e-match due to a short or defective part.
Well designed.
For the batteries, look for disposable vape pens, they have single cell lipo batteries of varying sizes, you can wire them in parallel for more capacity and in series for more voltage, these will need balance charge leads
That battery with the built in charger is awesome. I would love to be able to use that but unfortunately, I'm using the EggTimer Apogee controller and it needs a 1S Lipo at 3.7V.
I used the Altus Metrum EasyMini a few years ago until I had an ejection failure and it pummeled into the ground and it turned into $80 of tiny bits.
"Lipo batteries are great, but you have to charge them. So instead, I use a USB-charged battery with unknown internal charging and buck/boost circuitry."
Joshing aside, great video! Love the pill bottles, I'm going to have to pick some of those up for the next build.
I have a pair of Eggtimer Quantums to set up in a proper LOC kit, which will be my first dual deploy setup with redundancy. I love that the eggtimers can arm remotely with wifi from the phone, but I will be adding a rotary switch too just to make sure there are no objections to my setup at the field...thanks for the suggestions!
Some Eggtimer products will not accept 9 volts!
Thanks for your comments, I think. 😎
That is the way to do it. Well done. I also use the pill boxes as canisters
Great video… thanks for the tips!
Glad it was helpful!
One other question, what size hardware are you using for terminals? #8, #10 or metric?
I appreciate the guide. I have zero idea how to even get started into DD. How would you compare DD vs something like the Jolly Logic?
That is a great question and here are my thoughts.
I use the Jolly Logic chute release on a Level 1 style rocket and dual deployment on an L2 rocket.
I use the chute release on an H - I flight with motor ejection. It's simple and works well.
A L2 rocket will be larger and heavier so it will benefit from a larger chute that requires more black powder to move everything out of the payload bay. Shear pins should be used on the nosecone so it is not bumped out at apogee. An apogee deployment will result in a long walk followed by much grumbling 😎
JL chute release tips.
ruclips.net/video/9_wr-WNnYcE/видео.html
This is an electronics bay I built a few years ago.
ruclips.net/video/0PVbYNHOxus/видео.html
Ground testing is mandatory!
ruclips.net/video/Qopc6lgg_gA/видео.html
Will you share the info for the Ematch Connectors with the Knurled knobs attached to the bulkheads...... My Charge wells have similar ones but are built into the well and are pretty small
Thank you !!!! `Glasspack
The knurled brass nuts can be purchased through Amazon or a local hardware big box store. The best prices can be found on eBay. The brass nuts come in smaller sizes along with metric. I rub the mating surface on the bottom with sandpaper to clean up the connection.
amzn.to/3XE67x0
No link for the batteries?
Oops, thanks!
9-volt rechargeable battery.
2 pack - amzn.to/4effs5l
4 pack - amzn.to/3MZ2Jrl
Do you wire both of your Altimeters to one switch? I have been wiring up two switches......Didn't realize that you could do this with one? Is there an advantage to just the one switch besides AV space? Thanks for your amazing videos...I have learned a ton!!!!!! :)
Yes, I use one switch to power both altimeters. Two circuits are closed when the rotary switch is turned to the 220 position. Use a continuity tester to verify the pins. I have seen a number of very large rockets use one switch.
True redundant dual deployment would require two switches. It seems unlikely to me both poles would fail at the same time. I find the most common failures are, low battery, poor connection, and failed e-match due to a short or defective part.
Thanks again!!! I will try this on my next build!!!🤙