Clik here to view.
Ultrasonic Range Sensor on a PIC 16F767
Recently I bought an HC-SR04 Ultrasonic Range Sensor from Amazon.com. I thought this would be interesting and fun to play with. The first challenge was writing the code to interface with it. The range...
View ArticleClik here to view.
AdaFruit PN532 NFC/RFID controller breakout board - v1.3
The other day I found on my desk what looked like a credit card from one of those semi-cafeteria style restaurants. At this restaurant you present the card at each station when you order something and...
View ArticleClik here to view.
TI TLC5940 16-Channel LED Driver with PWM Control
I just learned about the TLC5940 from Texas Instruments. They are available at SparkFun. Normally I like to do everything myself, including write my own multi-channel PWM code for the Microchip PICs....
View ArticleClik here to view.
UV Ring with PIC16F628 POV Board
I have been intrigued by the idea of using UV LEDs to "write" on a phosphorescent surface ever since I saw this posted on the Make: blog. I already had a bunch of UV LEDs that I received when I thought...
View ArticleAnimated LED Pyramid
Looking for something to do with the thousand LEDs I bought from Electronic Goldmine, I decided to make a small pyramid. It reminds me of the Sol LeWitt sculpture, but on a much smaller scale. The LEDs...
View ArticleClik here to view.
Pin Forming LED Leds
The other day I bought a bag of one thousand green LEDs from Electronic Goldmine. The bag was sitting on my desk and every once in a while I would grab some of the LEDs and wonder what to do with them....
View ArticleClik here to view.
Neon Digits
Some time last year ThinkGeek gave HacDC the left over neon digits that never sold. They used to carry a 'DIY Neon Kit', similar to this one, but they discontinued it. The digits did not come with any...
View ArticlePS/2 Mouse on a PIC16F726 with a 9x11 LED Display
A few months ago I found some web pages describing the physical and signalling protocols between a PS/2 mouse and a PC. It was a lot simpler than I expected. Even though there are six pins on a PS/2...
View ArticleClik here to view.
One Thousand LEDs
The Electronic Goldmine email arrived a few weeks ago, and one of the items was a bag of one thousand LEDs (part G18232: Square Green LEDs (Factory Bag of 1000)). The price, at the time, was $15.00, on...
View ArticleClik here to view.
Finally solved my problem of using a coin cell with a Microchip PIC
TL;DR: Don't enable the 'brown-out reset' configuration bit if you are using the PIC at less than 5 volts.I have been playing with Microchip PICs for a number of years. Mostly I use something in the...
View ArticleClik here to view.
Ultrasonic Range Sensor on a PIC 16F767
Recently I bought an HC-SR04 Ultrasonic Range Sensor from Amazon.com. I thought this would be interesting and fun to play with. The first challenge was writing the code to interface with it. The range...
View ArticleClik here to view.
AdaFruit PN532 NFC/RFID controller breakout board - v1.3
The other day I found on my desk what looked like a credit card from one of those semi-cafeteria style restaurants. At this restaurant you present the card at each station when you order something and...
View ArticleClik here to view.
TI TLC5940 16-Channel LED Driver with PWM Control
I just learned about the TLC5940 from Texas Instruments. They are available at SparkFun. Normally I like to do everything myself, including write my own multi-channel PWM code for the Microchip PICs....
View ArticleClik here to view.
UV Ring with PIC16F628 POV Board
I have been intrigued by the idea of using UV LEDs to "write" on a phosphorescent surface ever since I saw this posted on the Make: blog. I already had a bunch of UV LEDs that I received when I thought...
View ArticleAnimated LED Pyramid
Looking for something to do with the thousand LEDs I bought from Electronic Goldmine, I decided to make a small pyramid. It reminds me of the Sol LeWitt sculpture, but on a much smaller scale. The LEDs...
View ArticleClik here to view.
Pin Forming LED Leds
The other day I bought a bag of one thousand green LEDs from Electronic Goldmine. The bag was sitting on my desk and every once in a while I would grab some of the LEDs and wonder what to do with them....
View ArticleClik here to view.
Neon Digits
Some time last year ThinkGeek gave HacDC the left over neon digits that never sold. They used to carry a 'DIY Neon Kit', similar to this one, but they discontinued it. The digits did not come with any...
View ArticlePS/2 Mouse on a PIC16F726 with a 9x11 LED Display
A few months ago I found some web pages describing the physical and signalling protocols between a PS/2 mouse and a PC. It was a lot simpler than I expected. Even though there are six pins on a PS/2...
View ArticleClik here to view.
One Thousand LEDs
The Electronic Goldmine email arrived a few weeks ago, and one of the items was a bag of one thousand LEDs (part G18232: Square Green LEDs (Factory Bag of 1000)). The price, at the time, was $15.00, on...
View ArticleClik here to view.
Finally solved my problem of using a coin cell with a Microchip PIC
TL;DR: Don't enable the 'brown-out reset' configuration bit if you are using the PIC at less than 5 volts.I have been playing with Microchip PICs for a number of years. Mostly I use something in the...
View Article
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