Pololu QTRX-HD-07A Reflectance Sensor Array: 7-Channel; 4mm Pitch; Analog [Discontinued] _RPI_CASE_AUDIO 5A power supply just like

5A power supply just like previous generations

Secure eFuse

It support both JTAG (ARM7/9/11) and SWD (ARM Cortex)

leaving them available for the other parts of your project

Plug is 110 US-style and can only be used in 110V countries

Pololu QTRX-HD-07A Reflectance Sensor Array: 7-Channel; 4mm Pitch; Analog [Discontinued] _RPI_CASE_AUDIO 5A power supply just likeThis Pololu IR LED phototransistor pair is great for precisely identifying changes in reflectance (like line detection). It operates from 2. 9 V to 5. 5 V and offers dimmable brightness control independent of the supply voltage. In general, the closer the object, the higher the contrast between light and dark readings, but high reflectance objects are generally detectable out to around 40 mm. This version features a high performance, low current QTRX