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--- sbms4080 [2017/04/05 17:41]
karl [Rx and Tx]
+++ sbms4080 [2017/04/10 07:48] (aktuell)
karl [Power Dissipation]
@@ Zeile 9: / Zeile 9: @@
 There were some issues, which I think are woth noting.
+===== Technical Data =====
+==== Power Dissipation ====
+Without any heatsink, 6W of dissipation on the power MOSFETs is possible. With Heatsink more than 20W are possible.
+=== PV-Input ===
+mV/A --> 9.6W@40A
+=== Load-Outpt ===
+mV/A --> 0.8W@20A
 ===== Missing Parts =====
@@ Zeile 28: / Zeile 41: @@
 {{ ::2017-04-05_003.png?direct&600 |}}
+{{ :fixed-sbms4080.jpg?direct&600 |}}
 ===== Flashing the Firmware =====
 For flashing the firmware I've used the Rx and Tx lines, connected to the external pins((they have been fixed, see [[#Rx_and_Tx]])). As USB adapter I've used the FTDI converter to 3.3V UART, with an 3.9k Ohm external pullup for the BMS's Tx line.
@@ Zeile 38: / Zeile 52: @@
 After flashing, Boot0 pin has to be connected to GND.
+Dacian [[https://youtu.be/_QlPJbhoiBo?t=2736|explains here]] how to use a ST Microselectronics developmentboard to programm it via USB.
 ===== Mechanical Tolerances Missmatch of LCD =====
-The LCD loses the signal very easy. It helps, to move the LCD as far to the North as possible before mounting the top PCB with the capacitive touch sensors.
+The LCD loses the signal very easy. It helps, to move the LCD as far to the North as possible before mounting the top PCB with the capacitive touch sensors. I also removed the zebra conductor from the LCD and cleaned all surfaces with "Kontaktspray". Since then there was no problem any more.

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