An insert in shoes that helps the visually impaired navigate the terrain

The article discusses the problem of visually impaired people and suggests a device to help them navigate in normal life. The principle of operation of the device is given. Mounted components are selected for surface mounting and hole mounting. Based on the results of the selection of components, the electrical circuit is assembled and traced. Calculations are given of: the volume occupied by the elements in the housing; the power dissipated inside the device housing; the fill factor; the reduced size of the heated zone; the reduced height of the air gap between the heated zone and the housing; specific surface power of the hull; medium-surface overheating; probability of trouble-free operation.