312
Tibbo Project System (TPS)
© Tibbo Technology Inc.
Details
This DAC Tibbit is based on the MCP4728 12-bit DAC with I2C interface. All four
channels of this DAC are used by the Tibbit. The analog front end of the module
allows you to output signals in the -10V to +10V range (respective to the system
ground).
The MCP4728 DAC IC has a 12-bit resolution. The Tibbit #14 has the effective
resolution of around 9~10 bits. This reduction is caused by the system noise and
other factors that affect the measurement quality.
Combine this Tibbit with
(DB9M connector). It's
not common but possible to use the latter for wiring into the DAC outputs. The
Tibbit
(four terminal blocks) can also be used but you will have to steal the
ground elsewhere, as #21 doesn't have its own ground line and the DAC outputs
voltages with respect to the system ground.
LEDs
There are two red, one yellow, and one green LED. The red LEDs are connected to
the SCL and LDAC lines, the yellow LED -- to the SDA line, and the green LED -- to
the -BUSY line.
Sample project
The use of this Tibbit is illustrated by a Tibbo BASIC test project. Yo can find it
here:
https://github.com/tibbotech/CA-Test-Tibbits-13-14
7.2.9.26
#15, H1: High-voltage AC Solid State Relay
Function:
High-voltage AC solid state normally opened relay