digitalPulse() jitter/offset

Tue 2018.11.06

Although I'll agree the accuracy isn't specified,

https://www.espruino.com/Reference#l__global_digitalPulse

the implication is millisecond(s) wide pulses.

Have you tried using an array of pulse values (see description in link above) and just a single digitalPulse() to rule out whether setInterval() is adding unnecessary (likely) intermittent delay?

Considering:

'It uses a hardware timer to produce accurate pulses'

For a 2msec pulse 4%-8% error is rather odd. . . .