Just ran the Mega controller with heated bed @ 115C. Temps on the heated bed mosfet never went over 100C and the PCB temps around it were in the 120C range (tu).
So far I really like this Mega controller. It has a high quality look and feel to it with bright clean looking solder on all the pins and all the components are squarely mounted on the PCB which is a big change from the Sainsmart Ramps setup I had previously. Included were 5 A4988 stepper drivers pre-mounted and 4 heat sinks with thin black double sided tape not mounted. They also included stepper motor connectors but I will probably stick to my stock Kysan connections for now until I decide on which board I prefer but I do like that the Mega connections "snap" in which should help avoid accidental stepper disconnects which will most likely fry the stepper drivers if they are energized.
I haven't tested it yet but the Sintron Ramps 1.4 package yet but it also looks to be of good quality with good looking solder quality on the pins and silkscreen "sintron" logo's on the Arduino board, Ramps 1.4 board and large LCD display which gives me hope since it's not a nameless clone with no ability to track it's source. It arrived well packaged with the stepper boards plugged into the Ramps board, stepper driver heat sinks installed with thin, black double sided tape(I plan to replace the tape with Arctic Alumina) and 3 jumpers installed for 1/16 step configuration on all 5 drivers.
So far I really like this Mega controller. It has a high quality look and feel to it with bright clean looking solder on all the pins and all the components are squarely mounted on the PCB which is a big change from the Sainsmart Ramps setup I had previously. Included were 5 A4988 stepper drivers pre-mounted and 4 heat sinks with thin black double sided tape not mounted. They also included stepper motor connectors but I will probably stick to my stock Kysan connections for now until I decide on which board I prefer but I do like that the Mega connections "snap" in which should help avoid accidental stepper disconnects which will most likely fry the stepper drivers if they are energized.
I haven't tested it yet but the Sintron Ramps 1.4 package yet but it also looks to be of good quality with good looking solder quality on the pins and silkscreen "sintron" logo's on the Arduino board, Ramps 1.4 board and large LCD display which gives me hope since it's not a nameless clone with no ability to track it's source. It arrived well packaged with the stepper boards plugged into the Ramps board, stepper driver heat sinks installed with thin, black double sided tape(I plan to replace the tape with Arctic Alumina) and 3 jumpers installed for 1/16 step configuration on all 5 drivers.