This blog covers the day to day progress of water rocket development by the Air Command Water Rockets team. It is also a facility for people to provide feedback and ask questions.

Thursday, March 03, 2011

ServoTimer II prototype

In the last couple of days I've soldered up the first prototype of the ServoTimer II.

 Top and bottom view of the timer

 Here it is next to V1.6 of the flight computer

I finally, got it running and bench tested tonight. I'll make up a couple more in the upcoming days and then fit them in deployment mechanisms and test fly them quite a few times. If all goes well, then I'll get actual boards made by a PCB manufacturer.

All up it weighs ~6 grams with the battery clip adding another 2 grams.


Unknown said...

It looks good George :)

It will be interesting to see how it performs :)


MariusD said...

Hi George,

You've changed the microcontroller!

We will see G2 on 13th March ;)?
Or wait until 26 (not good 13)?


George Katz said...

Hi Marius,

The new servo timer retains a lot of the functionality, but is easier to use and configure. It also has several different ways of triggering it depending on application. Being smaller and lighter also gives it a bit more flexibility where there isn't a lot of room. The timers also cascade so you can control multiple servos.

We don't set schedules for launches of particular rockets as we never know ourselves until perhaps a couple of days before. Basically when everything is ready, we are able to attend a launch and have good weather then we launch. I'm hoping it won't be too long now. :)

Unknown said...

Gentlemen, I am developing a water rocket and would like to have access to program code in CF. I'm from Brazil and develop projects in the area of Robotics (, a friend asked the partnership to develop this water rocket.

George Katz said...

@Morbeck send me an email:

And I can send you the code.