Very tidy. Onboard serial is a mixed blessing as many users want the four serial ports. Both crystals are oddly surface mounted with spacers/skirts underneath. This suggest risks of pad damage if subjected to physical abuse. PCB is nice, and has a fine textile like finish in mask area underneath. Useful legend also underneath with supply and output voltage values. Came with pins including ICSP. Bootloader worked as delivered. Good : Size, build, component grouping is very well planned, silkscreening, reset button close to mounting hole, on board USB. Flash is more than sufficient for complex arithmetic including trigonometry. Is recognised as MEGA 2650 in Arduino. 4 x UART. Could be better: PTH not gold-plated, no serial header for programming, tall crystal cans. This is of a higher quality than most "pro" or "nano" copies, together with the massive capacity, this is ideal for prototyping and one-off development where geometric arithmetic will be involved. CH340G (Tested with Ubuntu 16.04) Vin 7-9V (peak 18V is max for each LDO regulator) 5V out 800mA 3,3V out 800mA.

Very tidy. Onboard serial is a mixed blessing as many users want the four serial ports. Both crystals are oddly surface mounted with spacers/skirts underneath. This suggest risks of pad damage if subjected to physical abuse. PCB is nice, and has a fine textile like finish in mask area underneath. Useful legend also underneath with supply and output voltage values. Came with pins including ICSP. Bootloader worked as delivered. Good : Size, build, component grouping is very well planned, silkscreening, reset button close to mounting hole, on board USB. Flash is more than sufficient for complex arithmetic including trigonometry. Is recognised as MEGA 2650 in Arduino. 4 x UART. Could be better: PTH not gold-plated, no serial header for programming, tall crystal cans. This is of a higher quality than most "pro" or "nano" copies, together with the massive capacity, this is ideal for prototyping and one-off development where geometric arithmetic will be involved. CH340G (Tested with Ubuntu 16.04) Vin 7-9V (peak 18V is max for each LDO regulator) 5V out 800mA 3,3V out 800mA.

Very tidy. Onboard serial is a mixed blessing as many users want the four serial ports. Both crystals are oddly surface mounted with spacers/skirts underneath. This suggest risks of pad damage if subjected to physical abuse. PCB is nice, and has a fine textile like finish in mask area underneath. Useful legend also underneath with supply and output voltage values. Came with pins including ICSP. Bootloader worked as delivered. Good : Size, build, component grouping is very well planned, silkscreening, reset button close to mounting hole, on board USB. Flash is more than sufficient for complex arithmetic including trigonometry. Is recognised as MEGA 2650 in Arduino. 4 x UART. Could be better: PTH not gold-plated, no serial header for programming, tall crystal cans. This is of a higher quality than most "pro" or "nano" copies, together with the massive capacity, this is ideal for prototyping and one-off development where geometric arithmetic will be involved. CH340G (Tested with Ubuntu 16.04) Vin 7-9V (peak 18V is max for each LDO regulator) 5V out 800mA 3,3V out 800mA.

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