Wardy’s prototype propeller accessory for RasPi The prototype for my Propeller accessory is pretty much finished now. The final one will be a proper PCB with hopefully FOUR Propeller chips on it! I’m using one for this prototype to ensure that the basics are working such as I2C and bidirectional serial comms between the Pi […]
Author Archives: DP
Screen printing PCB manufacturing
Screen printing PCB manufacturing: Here is an example of Screen Printing PCB Manufacturing. It is very time consuming but your PCB factory could make screen printed t-shirts on the weekends. :) It looks like they are setup for medium volume but it looks very time consuming compared to modern PCB manufacturing. Via Hacked Gadgets!
Interfacing 8 2×16 LCD displays with only two wires
Jechavarria wrote a post on his blog detailing how to interface 8 LCD displays and 24 leds with only two wires: A couple of weeks ago, I just post a review of my MCP23017 breakout board. As the board configuration allows to connect up to 8 of these boards, I decided to do it and […]
Workshop Update for March 19th, 2013
We continue working on the Bus Pirate Edu Kit documentation. We continue working on the renders for documentation. The image above being the final render for the second exercise.
Solar panel charging circuit
Solar panel charging circuit: A special circuit is needed when charging a battery from a Solar Panel. When the solar panel is not providing any power the battery might start draining current into the panel. One common solution is to have a diode in series with the charging circuit to keep the current from going […]
DS1077 + Arduino
Wardy has documented his DS1077 configurable oscillator with the Arduino: I’ve finally had a chance to get around to playing with the DS1077 configurable oscillator! The circuit to get it working is very simple, just hook up the Ardiono as the I2C master, I used a 10K pullup resistor on both the SCL and SDA lines. […]
#FreePCB via Twitter to 2 random RTs
Every Tuesday we give away two coupons for the free PCB drawer via Twitter. This post was announced on Twitter, and in 24 hours we’ll send coupon codes to two random retweeters. Don’t forget there’s free PCBs three times a every week: Hate Twitter and Facebook? Free PCB Sunday is the classic PCB giveaway. Catch […]
The ultimate comparison of IOT development boards
The ultimate comparison of IOT development boards: With this post we wanted to compare the latest arrived boards in the world of hobbyists electronics with devices that were already on the market. We highlighted the pros and cons of the most prominent alternatives with the aim of helping our readers to choose the one better […]
Workshop Update for March 18th, 2013
We continue working on the Bus Pirate Edu Kit documentation. We touched up some render setting for the new models, and started rendering the final front page images. The image above being the final render for the first exercise. In preparation for our month log trip to Shenzhen we packed up all the equipment and […]
MSP430 powerscope, a low power aid
MSP430 powerscope, a low power aid: MechG developed a breadboard scope meter to help him identity and lower power consumption in his projects. The Power Scope is a meter intended for use on a breadboard to aid in the development of battery-operated devices. It provides dedicated monitoring at the power source so you can quickly […]
USB voltage current monitor
Gelbanana shared his Numitron driver board in the project log forum. And he is giving away his 5 extra pcb: I realized that I got extra space while designing the board (5cmx5cm) for my numitron driver board so I decided to add a USB I/V monitor into it. Unlike the others out there that uses […]
DIY soldering station test
dtmf did some tests for his DIY soldering station. Check out the video after the break. Via the forum.
Clock four, a scrolling text clock
John Boxall over at Tronixstuff posted a step by step guide of his Clock four build: Next in my random clock collection is this model, which displays the time in words using a Freetronics DMD via an Arduino-compatible board.
Logic Sniffer back in stock at Seeed
The Logic Sniffer is back in stock at Seeed Studio. The Open Bench Logic Sniffer is an open source logic analyzer. It’s designed to support the SUMP logic analyzer software at the lowest possible cost. Get a Logic Sniffer for $50, with free worldwide shipping.
Tips and tricks for microcontroller programming and debugging
This video by Johndoe271828 shows three tips for microcontroller programming and debugging.
Free PCB Sunday: Pick your PCB
We go through a lot of prototype PCBs, and end up with lots of extras that we’ll never use. Every Sunday we give away a few PCBs from one of our past or future projects, or a related prototype. Our PCBs are made through Seeed Studio’s Fusion board service. This week two random commenters will […]
App note: EEPROM emulation using flash
Here’s is a video describing the basic concepts of using Freescale flash memory to emulate EEPROM.
App note: Water-resistant capacitive sensing
This application note describes a new hardware sensing method which is resilient to water drops appearing on the surface of the touch sensing area.
App note: Using the deep under-voltage recovery mode (DUVR)
AVR354: Using the Deep Under-Voltage Recovery Mode (DUVR) [PDF!] DUVR mode represents the intelligent pre-charge mode for Atmel’s smart battery microcontrollers ATmega16HVA, ATmega8HVA, ATmega8HVD and ATmega4HVD. It is intended for controlled charging of cells even when the cell voltage is below the minimum operating voltage of the chip. The charging is done without using a […]
Workshop Update for March 15th, 2013
We continue working on the Bus Pirate Edu Kit documentation. The image above is used in an exercise where you build your own Bus Pirate LCD adapter on the bread board using only a 74HCT595 and a potentiometer. It’s the schematic representation of the 3D model image released yesterday. Packed components for (re)working projects in […]