- Android Touch Sensor Board and supporting equipment.
Priced at $595
- (including S&H inside the US, see below for overseas shipping).
-
- 1 full kit includes the following:
-
- a) 1 - Android touch sensor board
(assembled & tested)
- b) 35 - Force sensing resistors (FSRs)
- c) 1 - 25 pin parallel printer cable
(male - female)
- d) 1 - 26 pin to 25 pin parallel
interface cable (5 inches)
- e) 4 - 20 pin ribbon cables.
- f) 1 - Variable voltage power
transformer.
- g) 1 - Power adaptor cable & 2 connectors.
- h) 8 - spare SIPs (different resistors yield
different sensitivity)
- i) 1 - CD includes all
software, documentation, & instructions
- j) 1 - Hardware
assembly guide. (printed copy)
- k) 1 - Software development
guide. (printed copy)
- l) 2 - free support calls
Board & FSRs
Board & cables
DATA SHEET
Full kit just $595
$100 discount
available for Educational Institutions - just $495
Overseas Shipping Costs
Air Parcel Post (US
Post Office) 7 - 10 days - $25
United Parcel Service
(UPS) 3 days - $75
We have manufactured some two pin connectors
which make the connections to the board much easier. These
connectors have 18 inch wires (1/4" stripped) and fit tightly on
the 20 pin headers with .1 inch spacing.
They are available now at $3 each.
FSR Theory and History
A Force sensing resistor (FSR) is somewhat similar to a strain gauge with two major
differences. First, since most strain gauges are made of ceramic material, they will break
if deflected very much. An FSR is made from a polymer so it can withstand greater
deflection. Second, the response of most strain gauges is linear so that its sensitivity
is limited. However, the response of an FSR is logarithmic so that its response covers a
wider range with more accuracy. FRSs are an offshoot of the music industry. When musical
keyboards first appeared, the keyboards had no sensitivity so that when you hit a key, you
always got the same response. Musicians wanted to get a variable response which depended
on how hard they hit the keys. Hence the FSR was developed to satisfy that demand.
The size of the FSR shown here is about 1/4" (6mm) wide and about 1
5/8" (40 mm) long. It would be nice if they were smaller. The manufacturer
has told me that I need to buy at least 10,000 a month for 6 months in order for them to
make a customized model for us.
FSR DATA SHEET
Want to try out some FSRs?
$4 each
Touch Sensor Board Customer Comments
From: Mr. Morten Strandberg in Sweden, 5/31/01
Hi Chris,
As a matter of fact I tried it (his touch sensor
board) out yesterday and I was REALLY IMPRESSED with the sensor's performance! No
hysteresis whatsoever when unloaded, little drift during static load, logarithmic
response. IT WAS REALLY GREAT!
General Information: crwillis@androidworld.com
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