[SS2S-Main] Re: Digital scale load-cell design / instrumentation

  • From: monsieurboo@xxxxxxx
  • To: sugarshot@xxxxxxxxxxxxx
  • Date: Sat, 18 Jan 2014 07:11:34 -0500 (EST)

It's been a few years since discussion of these digital-scale load cells was 
ricocheting around the rocketry forums.  Naturally, I started by checking 
Nakka's site -- he's got a very cool "built from scratch" strain-gage design 
but I couldn't find one there that starts with a digital scale.  But here's a 
good starting point for what you're talking about.  This one hooks up to a PC 
with a "COM port" USB interface, and the author hand-rolled the electronics.



Mark L.


-----Original Message-----
From: vicente Alvero Zambrano <vicente_alvero_14@xxxxxxxxxxx>
To: sugarshot <sugarshot@xxxxxxxxxxxxx>
Sent: Sat, Jan 18, 2014 3:54 am
Subject: [SS2S-Main] Re: Interesting Motor-Design Documents

Hi Mattias,

It would be great if you could you do this. I think the maximum thrust is 
2000N, but better than Richard confirm it.

Vicente Alvero

From: mattias.lampe@xxxxxxxxxxx
To: sugarshot@xxxxxxxxxxxxx
Date: Sat, 18 Jan 2014 10:37:27 +0800
Subject: [SS2S-Main] Re: Interesting Motor-Design Documents

If you want to go even cheaper, load cells can be scavenged from cheap digital 
kitchen/bathroom scales. It’s not too difficult to hook them up to a computer. 
I can probably help with the electronics, but not so much with the mechanical 
What would be the maximum force to be measured?

From: sugarshot-bounce@xxxxxxxxxxxxx [mailto:sugarshot-bounce@xxxxxxxxxxxxx]On 
Behalf Of vicente Alvero Zambrano
Sent: Friday, January 17, 2014 12:47 AM
To: sugarshot@xxxxxxxxxxxxx
Subject: [SS2S-Main] Re: Interesting Motor-Design Documents


Instruments would be a gauge and load cell, right? but this must be commercial. 
some sets is "cheap". with relative to a support, I think we would have 
problems. that would be cheap.

maybe we can also use the pressure gauge and load cell minisshot rocket.

Date: Thu, 16 Jan 2014 10:30:00 -0600
Subject: [SS2S-Main] Re: Interesting Motor-Design Documents
From: richard.nakka@xxxxxxxxx
To: sugarshot@xxxxxxxxxxxxx

To design/build the instruments to measure motor thrust and chamber pressure. 
We would have to do this on a "tight" budget.



On Thu, Jan 16, 2014 at 10:18 AM, vicente Alvero Zambrano 
<vicente_alvero_14@xxxxxxxxxxx> wrote:

What kind of help with the instrumentation?



Other related posts: