Microcontrollers existed before the Arduino, and a device that anyone could program and blink an LED existed before the first Maker Faire. This might come as a surprise to some, but for others PICs and 68HC11s will remain as the first popular microcontrollers, found in everything from toys to microwave ovens.
Arduino can’t even claim its prominence as the first user-friendly microcontroller development board. This title goes to the humble Basic Stamp, a four-component board that was introduced in the early 1990s. I recently managed to get my hands on an original Basic Stamp kit. This is the teardown and introduction to the first user friendly microcontroller development boards. Consider it a walk down memory lane, showing us how far the hobbyist electronics market has come in the past twenty year, and also an insight in how far we have left to go.
Continue reading “Before Arduino There was Basic Stamp: A Classic Teardown”
This hack makes your Keurig experience fully automatic. For those that aren’t familiar with the hardware: this type of coffee maker includes a water reservoir. Coffee is brewed One cup at a time by drawing from that water, quickly heating it, then forcing it through disposable pods containing coffee grounds and a filter. This takes the user-friendly design one step further by automatically keeping the water full.
This goes beyond the last water reservoir hack we saw. That one routed a water line to the machine, but included a manually operated valve. [Eod_punk] added a solenoid valve and level sensor in this project. The level sensor is submerged in the tank and is monitored by a Basic Stamp microcontroller. When the level is low the BS1 drives the solenoid via a transistor, letting the water flow. This is all shown in the video below.
Continue reading “Keurig hack now automatically fills the water reservoir”
[Navic] added a slew of abilities to his RFID reader. It’s now a full-featured RFID reader and smart card writer with extras. When we looked at it last time the unit was just an RFID and smart card reader in a project enclosure. You could see the RFID code of a tag displayed on the LCD screen, but there wasn’t a lot more to it than that.
The upgrade uses the same project enclosure but he’s added four buttons below the display. These allow him to access the different features that he’s implemented. The first one, which is shown in the video after the break, allows him to store up to six tags in the EEPROM of the Basic Stamp which drives the unit. He can dump these tag codes to a smart card (pictured above), but also has the option of interfacing with a PC to read from and write to that card.
We don’t think you can directly write RFID tags with the device, but we could be wrong.
Continue reading “RFID reader gets user inputs and smart card write capability”