This article presents the design process of control structure applied for electrical drive with flexible shaft. Problems, that may occur while implementation of standard methods of synthesis, are indicated. Application of bio-inspired optimization algorithm (Flower Pollination Algorithm) for tuning the controller is also described. However, the main point of work deals with the first stage of real tests – calculations of neural estimator performed using low-cost programmable device. For this purpose the SIPEED Maix Bit development board with the RISC-V K210 Kendryte CPU was used. The details of code implementations and concept of prepared calculations are presented in following sections. Finally test results and conclusions are given.