rs232

When Choosing RF Test Equipment, Don’t Forget the Interface options

When purchasing an item of RF test equipment such as an RF switch or a programmable attenuator, it’s tempting to concentrate on specifications such as insertion loss, frequency range or VSWR. But implementing a complex testing scheme usually involves integrating multiple pieces of equipment from multiple manufacturers. A customer will often purchase the first piece …

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Raspberry Pi – RS232 Serial Interface Options (Revisit)

In the previous article Raspberry Pi – Installing a RS232 Serial Port we discussed how to install a RS232 port on the Raspberry Pi.  This is a follow up article to suggest a few alternative interface options as the XBit RS232 level-shifter board has been unavailable (sold out) for while now. There are two primary …

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Remaking MSR206 RS232 magnetic card reader to USB

As you might have noticed, sometimes I work as freelancer in electronics =) It applies not only to fixing PC electronics and mobile phones, but also to repairing, modifying and designing my own solutions in consumer electronics. One of the projects I worked on yesterday is modifying MSR-206 magnetic card reader to replace RS232 port …

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