BMW PSU for ISTA/ESYS Programming

Do you need a reliable PSU for your long coding and programming sessions?

https://www.youtube.com/watch?v=3zKvxx2WdX4

I will show you how to modify an HP DPS-1200FB PSU (HSTNS PL11 in my case) to be suitable for using with ISTAP and ESYS.

It is very cheap and easy.

You only need to attach some wires and a couple of resistors.
- 330 ohm for waking up the PSU
- 6K8 ohm for boosting up the Power Delivery Unit up to ~15 volts
- 12K ohm for tampering the Over Voltage Protection up to 15 volts.

In my case, I have added a voltmeter and amperemeter to check the PSU at any time. This kind of PSU have also a I2C bus where you can attach an Arduino board (or Raspberry Pi) and monitorize more parameters such as temperature, fan speed, power delivery status, etc.

Be carefull and use good quality materials due to the max power you can manage with this!

I have used 6mm2 wires of pure copper rated up 40A each. Max output in my case is 14v and 80A as needed for BMW cars. But t