Module with the 3-channel distance sensor OPT3101. The sensor has a range of up to 1 m, a wide viewing angle of up to 180° and communicates via the I2C interface. Pololu 3680

Module with ACS724LLCTR-10AU current sensor with a measuring range of direct and alternating current from 0 to 10 A. It communicates via an analog interface. Pololu 4042

Module with ACS724LLCTR-05AB current sensor with a measuring range of direct and alternating current from -5 to 5 A. It communicates via an analog interface. Pololu 4041

Module with ACS724 current sensor with a measuring range of direct and alternating current from 0 to 10 A. It communicates via an analog interface. Pololu 4045

Module with ACHS-7122 current sensor with a measuring range of direct and alternating current from -20 to 20 A. It communicates via an analog interface. Pololu 4031

Module with ACHS-7123 current sensor with a measuring range of direct and alternating current from -30 to 30 A. It communicates via an analog interface. Pololu 4032

Module with 7 QTR type optocoupler with RC (digital) output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 40 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4147

Module with 13 QTR type optocoupler with analog output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 40 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4213

Module with 13 QTR type optocoupler with analog output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 40 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4253

Module with 13 QTR type optocoupler with RC (digital) output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 40 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4153

Module with 25 QTR type optocoupler with analog output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 50 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4225

Module with 25 QTR type optocoupler with RC (digital) output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 50 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4125