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Hi All The other day I was looking at making a simple altimeter with a display similar to the Joly Logic or Estes one so I looked around and bought a TTGO board. TTGO seams to be very easy to integrate in a 3D printed case they are numbers odf example on Thingiverse...

Just saw the following crow funding campain for a very special starship model

Just found that on the internet. This is a clean landing of a model rocket. Congratulation to that young guy who did And some explanations

I came accross that video on youtube, this flight stabilized rocket made by a Chines guy

Hello I have been playing up with chatGPT the new bot that OpenAI release and I have tested with rocketry practical examples. I must admit that I was astonished by the result I got. The way it works is very simple, you describe your need in plain English (French also works!!!) and it generate...

Hello all I have created an ESP32 altimeter board and I have ported my AltiMulti code https://github.com/bdureau/RocketFlightLogger so that it can run on the ESP32 This is exactly the same size of my AltiMultiV2 board however bluetooth is integrated on the board and it is a lot faster to...

Few years ago I started logging GPS coordinates as part of the rocket flight on my stm32 Altimeter. I am now also adding GPS tracking and I am releasing it open Source I have been looking at the previous tracker that were written by various people and unfortunately they are no longer compatible...

It has been a while since I touched any OpenRocket code ... However this afternoon I got fed up converting OpenRocket components from PDF which is really difficult when you have large parts. In order to make my life easier I have been writing a simple Java program that extract all rockets...

Hi all I first did a test stand about 10 years ago using a dataQ but I have never been fully satisfied with the result I done a new one in the last few weeks which seams a bit more promising It is using an stm32f103c8t6 board and an HX711 board so it is quite cheap to make. I am using an...

Hello all I have talking telemetry available with the following altimeters that I have developed in the last 10 years: - AltiDuo ver 1.0 https://github.com/bdureau/AltiDuo_console - AltiMulti ver1 and 2 - AltiMulti STM32 https://github.com/bdureau/RocketFlightLogger - AltiGPS...

I came up the other day with a very simple design for my avionic ematches terminal bloc. Because black powder ejection charges are very corrosive I always try to seal everything. The 4 stainless steel screws act as wires to connect the 2 terminal bloc boards. This allows 2 electric matches to...

Hello I have lost some of my Tru Core/Brandx hardware (or similar) and I would like to buy some second hand 29 and 38 mm casing. I am after all size from 2G to 6G. Boris

TruCore casings (https://www.rocketsaway.com) which I use quite a lot to test and improve my altimeters at a reasonable cost are no longer made and sold by Ed. In order to be able to get spare parts made by machinist I have started to model them using OpenScad. I then double check them with my...

Hi all Does anybody knows when it will be possible to order Tru Core motors? https://www.rocketsaway.com/ I have tried to contact Ed but his email no longer seam to work. Boris

I have built a full plastic rocket that I am planning to fly with an H motor. Appart from the body tube and the motor mount all the other parts are 3D printed It is 1.20 m hight, weight about a kg an the diameter is 50mm It is a dual deployment rocket with 2 altimeters (one is used for...

I have always found that screw switches were quite expensive for what they were . I have assumed that this was due to the fact that they are only use for rocketry so made in small quantities. However they are quite reliable and I have never found a replacement that I was happy with. So I...

Hi all I have few years ago built a motor test stand but that was quite expensive. I have been looking around and it looks like it is now a lot cheaper to do with some Arduino board. I bought a load cell amplifier for a couple of dollars...

I am progressing very well my SMT version of the AltiUno and AltiDuo that I have been selling as kits. I thought I will start a new thread because the other one is really for the kits and people who like to do the hacking... Both SMT version use nearly the same version of the program however...

Hi all I am currently implementing an airstart function on my AltiMulti altimeter. https://rocket.payload.free.fr/index.php?option=com_content&view=article&id=13&Itemid=11&lang=en So far I have 2 ideas: - implement 2 simple timer so that you do rocket separation at booster burn out with...

Hi all I am using the BMP085 in my four altimeters https://rocket.payload.free.fr/ This sensor can be used at different resolutions (the more resolution the longer it takes) and I was wondering for those using the sensor which resolution they use. Looking at the code below from the adafruit...