Table 1 Features of the ESP32- and Arduino-based MyoPulser compared.
Feature | ESP32-based MyoPulser | Arduino-based MyoPulser |
|---|---|---|
Adjustment of the settings | Digital via sliders of a software; no intermediate values when settings are changed | Manual via rotary potentiometers; intermediate values are possible when settings are changed during an experiment |
Connection to a computer for proper function via USB | Mandatory | Optional |
User interface without submenus | Via software | Via hardware |
Output signals comparable with commercial devices | Yes (compared to IonOptix’ “MyoPacer”) | Yes (compared to IonOptix’ “MyoPacer”) |
Data recording for each individual pulse with all settings applied | Automatically written to a file | Manually via copy/paste |
Estimated production costs [$] | 55 | 100 |
Feature | MyoPulser (both versions) | IonOptix’ “MyoPacer” |
|---|---|---|
Polyphasic pulsing | Yes | No |
Quick change of settings without submenus | Yes | Submenus, only accessible via a single rotary decoder |
Pulsetypes | Monophasic, biphasic, alternating, and polyphasic | Monophasic, biphasic, and alternating |
External trigger | Yes (instead of manual pulsing) | Yes |
Pulse length [ms] | 1–200 (depending on pulse-mode) | 0.4–90 |
Voltage [V] | 9; adjustable, if a laboratory power supply is used | 0–40 |
Extensive data recording for every single pulse | Yes | No |
Pricing [$] | 55–100 | About 3000 |
Electrode material | Carbon/graphene (cheap, disposable) | Platinum (expensive, not disposable) |
