If AP2553 is a protection , then it should be throng enough and protected against short circuit.
It appears that this protection circuit isn't enough robust and instead of acting as a protection acts as a fuse

Hi, I get the same issue on a Pi 2 Model B. There is no more +5V power on the USB socket. I read the other posts which speak about AP2553 : https://www.raspberrypi.org/forums/viewtopic.php?f=29&t=88789 https://93.93.130.214/forums/viewtopic.php?f=28&t=110164&p=760997 The signal on pin EN...

Hi Eric, I use your test program (as node 11) with the "Sample RFM69 receiver/gateway sketch" from Low Power LAB as node 1. But, nothing appear to the gateway Logger. When I take the "Sample RFM69 sender/node sketch" (as node 12) from LPL then I receive the LOG on the gateway nod...

Hi, I'm using Pyserial with the example here : http://pyserial.sourceforge.net/examples.html#tcp-ip-serial-bridge In the serial routine reception (reader), I add a log file to check the RX data. def reader(self): """loop forever and copy serial->socket""" while self.ali...

In fact, the actual terminal server (tcp<->rs232) is transparent. The scada (master) speaks with the fire panel throught this TS. So if I replace the actual TS by the Rpi+ser2net, I'm sure that the problem will continue to happen. And as ser2net can also do a log (with separated rx &tx), it easi...

Actually, I have two devices. One is a fire panel that doesn't answer as I suppose he received a XOFF. The other is a terminal server. So, in place of sniffing the COM between the two devices, I can plan to replace the actual server with a Rpi running "ser2net". The log can be made with th...

Hi, I have a issue on a device and this will be my first step in LINUX world (and with the Raspberry Pi). The situation : I have two devices connected through RS232. One device regularly stop to communicate (No more data on TX). After analysis, a XON is the solution to relaunch the communication. So...

Nice post. I think about something similar. I'll make a expander interface for the PI. As I must have more power from the Pi USB (I want to use a USB disk and a WiFi to realize a Media player), I think the following : 1) Buy a USB header that I will place on the expander card. 2) Connect the GND and...

Dear users, I search on the web to find a procedure to install LMS on the Rpi. I know the squeezeplug distribution but I don't want to reformat my SD card to install LMS. I found the following topics : http://allthingspi.webspace.virginmedia.com/lms.php for LMS 7.2 http://www.imagineict.co.uk/comput...

Dear developers, At the beginning, I though to use only the Rpi ( a RS485 chip) to communicate on a RS485 Bus. But it's difficult to control the RS485 pin direction (RE/DE PIN) directly with Linux driver (There are a lot of discution on forums but finally, I don't want to go this way). A better way ...

Bonjour, Je profite de ce post encore actif pour vous demander de l'aide concernant les port série et plus précisément les interruptions du port série sous Linux. :? Il y a très longtemps et sous DOS, j'ai écris un code en C pour réaliser un Modbus Slave sur la porte série. J'explique un peu le prin...