This is my first post, and I'm not an electronics person, but I do own a well-used pencil-type soldering iron...quit laughing!
Here's my problem. I would like to modify a hanging scale that has a really annoying and useless HOLD feature.
AWS model SR-5.
This scale locks onto a "favorite" weight after some indeterminate length of time or some other unfathomable (to me at least) electronic variable.
It just fails to get reliable and repeatable measurements.
I want to use the scale to get field weight measurements on snakes, venomous snakes, which are most safely weighed after being secured inside a bag.
Thus, a hanging scale.
The AWS SR-5 would be perfect for my application, with a range up to 11# by .01# increments (metric mode also)
I have explored the scale market...and this is the best I have seen for my purposes.
I have corresponded with their customer service, and yes, they have a new model in planning stage which will include an on/off option for the HOLD feature.
After opening the case, and exploring the internet to see what kind of circuit diagrams etc that I could find, I arrived here at allaboutcircuits.
I have also opened the case of an AWS model SR-1, which does not have the HOLD function, but has a maximum capacity of 1Kilo.
I observe only 2 visual differences between the 2 models.
1-the load cell mechanical structure is different, but hey, one unit has a kilo max, and the other ~5K, so that seems predictable.
2-I see a little extra resistor? on the top of the SR-5 circuit board, which is absent on the SR-1; otherwise the tops look identical.
(Except for the area under the LCD, which I cannot see very well)
The bottoms of the circuit boards will reveal themselves only at further risk of disturbing solder connections adjacent to the mount screws.
Sorry if this is tedious, but I am seeking expert feedback, and am grateful for any guidance.
Is there any chance that I might be able to bypass the HOLD circuitry on the SR-5?
Or, is this function programmed like firmware?
And, is there any chance that someone might answer these questions based on photos of the hardware?
Or, do you need circuit diagrams?
Thank you so much already for the time spent reading my post!
Here's my problem. I would like to modify a hanging scale that has a really annoying and useless HOLD feature.
AWS model SR-5.
This scale locks onto a "favorite" weight after some indeterminate length of time or some other unfathomable (to me at least) electronic variable.
It just fails to get reliable and repeatable measurements.
I want to use the scale to get field weight measurements on snakes, venomous snakes, which are most safely weighed after being secured inside a bag.
Thus, a hanging scale.
The AWS SR-5 would be perfect for my application, with a range up to 11# by .01# increments (metric mode also)
I have explored the scale market...and this is the best I have seen for my purposes.
I have corresponded with their customer service, and yes, they have a new model in planning stage which will include an on/off option for the HOLD feature.
After opening the case, and exploring the internet to see what kind of circuit diagrams etc that I could find, I arrived here at allaboutcircuits.
I have also opened the case of an AWS model SR-1, which does not have the HOLD function, but has a maximum capacity of 1Kilo.
I observe only 2 visual differences between the 2 models.
1-the load cell mechanical structure is different, but hey, one unit has a kilo max, and the other ~5K, so that seems predictable.
2-I see a little extra resistor? on the top of the SR-5 circuit board, which is absent on the SR-1; otherwise the tops look identical.
(Except for the area under the LCD, which I cannot see very well)
The bottoms of the circuit boards will reveal themselves only at further risk of disturbing solder connections adjacent to the mount screws.
Sorry if this is tedious, but I am seeking expert feedback, and am grateful for any guidance.
Is there any chance that I might be able to bypass the HOLD circuitry on the SR-5?
Or, is this function programmed like firmware?
And, is there any chance that someone might answer these questions based on photos of the hardware?
Or, do you need circuit diagrams?
Thank you so much already for the time spent reading my post!