microHAM ARCO
firmware v1.2.A
microHAM · Released Aug 23, 2021 · First seen Sep 9, 2026
Source:
microham.com
v1.2.A is not the latest firmware for the microHAM ARCO: the current version is v4.2.B (January 3, 2025). Go to v4.2.B
In short — summary by updatemystuff.com
AC rotator automin and button rampdown fixed, new BUTTON USE RAMPS option.
- AC rotator automin fixed
- AC rotator button rampdown now proportional to rampup
- New BUTTON USE RAMPS option
Written from microHAM's release notes, which are printed in full below.
Was this useful? Thanks.
What's in this update
- fixed incorrect automin for AC rotators
- fixed buttons rampdown to be proportional to rampup for AC rotators
- brake/PSU off is delayed by 5 sec after last movement
- hold delay range expanded down to 0.1 sec
- new option BUTTON USE RAMPS (in Menu->General) - if unchecked, buttons use CALIB SPEED set in Menu->Heading
- after update load, last window asks for switching ARCO OFF/ON
updatemystuff.com never hosts firmware files — always download from the official source.
Get it from microHAMWatch the ARCO for updates
Create a free account and get an email the moment microHAM publishes new firmware.
Create account & watch