DP6037 Protoboard v1 PCBs are available at Seeed

A multipurpose 0.1″ pitch prototyping board that fits a DP6037 acrylic case is now available at Seeed Studio. This one is pretty small, just 60mm by 37mm, bigger boards are on the way. We originally made this board for building up quick and simple reference circuits with through-hole chips, such as the DIP ARM chip […]

Testing the new reduced-sized ICSP connector

This week we received a batch of PCBs and amongst them was the latest revision of our USB TFT breakoutboard. This board is the first board that features a new ICSP footprint, which occupies less space on the PCB and should improve testing and programming times at Seeed.

Geo Data Logger: Arduino+GPS+SD+Accelerometer to log, time-stamp, and geo-tag sensor data

This Instructable  describes a prototype of a road condition scanner using Arduino + GPS + SD + Accelerometer designed by TechBitar: I thought it would be educational to build a prototype that I can take on the road to log, geo-tag, and time-stamp sensors data to be analyzed later with mapping and data analyses applications.  […]

Soldering iron driver v1.5 PCBs are available at Seeed

Hardware hacking is more fun with open source, DIY tools. That’s why Arhi designed a completely open soldering station controller motherboard. And we designed a through hole version that is now available as a PCB only at Seeed for $7 The completed PCB is the heart of a soldering station, able to control several types […]


Here is the Smoke Tester. It’s a board designed to safely power prototypes for the first time and see if there are shorts. Current can be measured using a voltmeter. Here’s the full feature list. 5V and 3.3v voltage regulators 7V-15V input 3 possible input sources: USB, 2mm DC barrel jack, and screw terminals 3 […]

Playing with ATX Breakout Board in KiCAD

Over the last week we re-visioned the ATX power supply breakout board in KiCAD, free of the confines of Eagle’s 100mm by 80mm cell. We chose the ATX board because it’s already at the limit of the free version of eagle, and it’s filled with big connectors that can’t be miniaturized. This version builds on […]

NEW PROTOTYPE: 1.8″ TFT display with USB interface

Like so many others, we found a nice 1.8″ TFT display in China, and we decided to make a breakout for it. Instead of just breaking out the pins, and perhaps adding the micro SD card holder, we equipped our version with an USB enabled microcontroller and a few buttons for GUI projects. This display […]

FT311D Android Open Accessory IC breakout board update

Here’s the update in our earlier PROTOTYPE PREVIEW: FT311D Android Open Accessory IC breakout board post: Added 2 10k pullup resistors on IOBUS0 and IOBUS1 with series jumper to turn it on/off Change 1×8 header to 2×5 for the breakout IO BUSES Breakout 3v3 and 5v onto the 2×5 IO BUSES header too Moved vias […]

PROTOTYPE PREVIEW: FT311D Android Open Accessory IC breakout board

FTDI announced the FT311D Android Open Accessory IC last week and we designed a breakout board for it. The 7 GPIO pins are broken out, and it has everything necessary for the IC to function. Stuff like: 2 Power supplies: 3.3V for the IC, 5V for the VBUS line Quartz crystal oscillator for stable USB […]

MIT computerized self position-correcting hand router

Drone writes: “Check out this computerized self position-correcting hand router made by Alec Rivers, Ilan E. Moyer, and Frédo Durand of MIT’s Computer Science and Artificial Intelligence Laboratory. The plan is to commercialize this. You would upload designs and/or buy designs to upload like apps on a smartphone. There’s a 6 Mb PDF of a […]

ATARI POKEY player using DP QFP proto board

Markus Gritsch has built a dedicated ATARI POKEY chiptunes player using a DP QFP proto boards. “I successfully compiled the ASAP (Another Slight Atari Player) library for a PIC32MX795F512H. ASAP emulates a 6502 CPU and the famous POKEY sound chip used for example in the ATARI 400/800 and XL/XE 8-bit computers. To say it with […]

Chaotic Moon Labs’ Board of Imagination

At CES 2012 Chaotic Moon Labs debuted the Board of Awesomeness, a motorized skateboard which was controlled based upon readings from a Kinect. Now the CML crew has taken the concept one step further with their Board of Imagination. The BOI is similar to the Board of Awesomeness except that control is based upon brain […]


PIC TQFP100 Breakout boards are designed to quickly get you prototyping with any Microchip PIC microcontroller or dsPIC digital signal processor that comes in 100pin 0.4mm pitch TQFP (designation ‘PT’) packages. We’ve checked support for PIC32s, PIC24s, and dsPIC33s, but others may be supported as well. In version 2 we fixed some bugs and added […]


Part Ninja V1 is a electronic component testing tool. It identifies electronic components like transistors and FETs, determines the pinout, and measures basic specifications. Several SMD footprints are included so surface mount parts can be tested too. Only a few pins and resistors are needed for the transistor tester, so we used the extra PIC […]

PROTOTYPE PREVIEW: Bus Pirate HV programming adapter v4

Tayken finished the Bus Pirate v4 HV programming adapter. This adapter allows a Bus Pirate v4 to program PIC microcontrollers that require high-voltage on the VPP ICSP pin (PIC 16F, 18F) to enter programming mode. A DC-DC boost converter is driven by the Bus Pirate pulse-width modulator generates the required programming voltage. The adapter for […]

FIRST DRAFT: Programmable dummy load

  This is a programmable current sink, usually used to simulate  different current loads for power supplies. We have always wanted to build one, but we’ve stalled several times. This design is based on the simple analog load posted by Bearmos. It’s not intended to be a final project, it’s just an experimental prototype to […]

Preview: Open source soldering iron driver v1.5

Today we sent our updated soldering iron driver v1.5 PCB to be fabricated. This is a 100% through-hole reroute of Arhi’s latest gen 3 design. The ground plane is broken into power supply, analog, and digital sections to help reduce noise. PCBs will be available in the free PCB drawer soon if you’d like to […]

PREVIEW: CPLD-based XT-IDE adapter V2

The second version of our CPLD-based XT-IDE adapter PCB is about to go to the board house. In this update all the logic ICs have been moved to the CPLD, making it fully programmable. The XT-IDE project is a Vintage Computer forum driven project to develop and manufacturer an 8-bit ISA IDE controller. It allows […]