ArduinoHannover / ZPB30A1_Firmware

Open-Source firmware for the ZPB30A1 electronic load (WIP)
GNU General Public License v3.0
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Schematic! #1

Open josemariaaraujo opened 6 years ago

josemariaaraujo commented 6 years ago

My load is a bit out of calibration (around 10% error in current), and I was checking the schematic to find where I could fix it, and found a difference to my board: R27 in mine is 1K (102 in the silk screen), just bottom left of pin 1 of the opamp IC3. Can you confirm if it's a schematic error? I went around the opamp checking other values and coudn't find any other difference. Thanks (and already have a couple of stm8 in the mail)

christakahashi commented 2 years ago

Mine is a 1k resistor (1001, with 102 silk).
image

Also I noticed that the programmer jumper pin numbering is backwards. pin 1 is ground 2 is reset etc.