Archive for Circuit Suggestions
Both the LEGO 7.4 Volt Rechargeable Batteries for Mindstorms NXT, are of Lithium-ion Polymer construction. Lithium-ion polymer batteries are light weight rechargeable batteries.
I've been experimenting with my new Mindsensor NXTCam. As most people are aware of the inherent issues associated with optical sensing, mainly due to changes in lighting level, can be very frustrating. In attempt to minimise this lighting issue, I decide to construct a stable light source for the NXTCam. To begin, I needed to [...]
Still got that container on the bench with a pile of unsorted resistors left over from projects, or perhaps have purchased a mixed-lot of assorted resistors to begin with. Resistors have colour bands printed on them, rather than numeric values, which makes them more difficult to sort in you don't know the resistor colour-code of [...]
I needed a LEGO Mindstorms NXT Cable Checker to allow me to Verify my NXT Connector Cables for connectivity or faults. A tester is particularly useful for when you are crimping your own cables. I picked up a cheap Network Cable checker of eBay for $2.50, and hacked it to suite NXT Cables. Unfortunately it [...]
I've been working on an NXT Keyboard for an Ordering System to use with my LEGO Mindstorms NXT Robot Crane with Ball Sorting Conveyor System, in conjunction with my NXT Line Following Dump Truck. The Keyboard uses 6x RCX type Touch switches connected to my RCX-TouchMux Sensor Multiplexer. Ordering System's Input Keyboard for My Ball [...]
This Lego Mindstorms NXT Appliance Controller allows you to turn on-and-off your Household mains powered equipment such as lights, radios, heaters, etc. All via your Robot. Using this Controller in conjunction with a Lego Temperature Sensor you can control your aquarium, and even as a incubator control to hatch out bird eggs. This [...]
I have built a Lego Mindstorms NXT, 8 Input RCX Touch Sensor Multiplexer for use with the old style RCX Touch Sensors with full construction details Here in an Earlier Post. I finally got around to nutting out a Driver Library for use with John Hansen’s Lego Mindstorms NXT Programming Language NXC: Not-eXactly-C.
The NXT RCX_TS_Mux: NXT – 8 Input RCX Touch Sensor Multiplexer Unit with Sensors attached I have built a Lego Mindstorms NXT, 8 Input RCX Touch Sensor Multiplexer for use with the old style RCX Touch Sensors. I personally think these retro Touch Sensors are far, far easier to use in models due to their [...]
For ease of use I have modified my Mindsensors' NXT & RCX Motor Multiplexers with the following Power Supply Modifications. This method finishes the issues associated with the external power supply leads fraying, braking and in the case of the RCX Motor Mux, shorting to the PCB Components on occasions. Which is not at all [...]
I purchased on of Mindsensors' 8 Channel Servo Controller for NXT (NXTServo-v2). I found 6 x 9gram Micro Servos for around $20 on eBay. I am quite amazed with the amount of torque out of something half the size of a matchbox. The next thing was to come up with a method of interfacing the [...]