Open-source autosampler for elemental and isotopic analyses of solids

Miau, a microbalance autosampler

“…Miau is a cartesian robot, which means that movements are performed on straight lines along three-dimensional axes perpendicular to each other. Due to the widespread availability of their basic components, including control boards, mechanical parts, and 3D printed parts [6] , [7] , many such cartesian robots have been presented recently in the literature for varied purposes in laboratory [8] , [9] , [10] , [11] , [12] , [13] , [14] , [15] , [16] , [17] , [18] , [19] , [20] , [21] and even in the field [22] , [23] , [24] , but none of them specifically for dealing with sample weighing.…”

Portable open-source autosampler for shallow waters

“…A rechargeable and portable 12 V battery powers the motors. The motors are controlled using an MKS Gen 1.4 control board, which has the Marlin firmware installed [16] , [17] , [21] , [22] . The board is connected to a tablet running on the Android operating system, on which Macrodroid [23] , [24] , [25] , a scripting interface, is used to program the motor movements.…”

“…Download the Arduino IDE ( https://www.arduino.cc/en/Main/Software ) and the Marlin package with the appropriate version of the firmware ( https://osf.io/2c6t5/ ). This is an updated version of Marlin used for previous autosamplers [16] , [17] , [22] , with minor modifications, including the ability to control servo motors. More details about this Marlin package are provided elsewhere [16] , [22] .…”

“…This is an updated version of Marlin used for previous autosamplers [16] , [17] , [22] , with minor modifications, including the ability to control servo motors. More details about this Marlin package are provided elsewhere [16] , [22] . Upload it to the board.…”

“…Connect it to the tablet, and use Serial USB Terminal to control it. All commands sent to the board are a variation of G-code [30] for the Marlin firmware, as in previous autosamplers [22] , [16] , [17] . The first command must be M121, to allow for negative coordinates.…”