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 […]
Author Archives: DP
Simple component size and silkscreen reference board update
Philip posted an update on his component size and silkscreen reference board we covered previously: After the reference board went over well, I also made a set of smaller boards to show the different soldermask colors. The boards all have a very similar front with exposed pads, traces and silkscreen both on copper and off copper. […]
Free PCB coupon via Facebook to 2 random commenters
Every Friday we give away some extra PCBs via Facebook. This post was announced on Facebook, and on Monday we’ll send coupon codes to two random commenters. More PCBs via Twitter on Tuesday and the blog every Sunday. Don’t forget there’s free PCBs three times every week: Free PCB Sunday. The classic. Every week, get […]
Week in (p)review September 20, 2013
Here’s a summary of major developments over the last week. Free PCB Friday is coming up soon. OpenBench Logic Sniffer ported to Pipistrello LX45 USB LCD Backpack PIC18F24J50 free PCB build Diolan firmware update tool for PIC18F2550 used in USB IR Toy Coming up: Free PCBs via Facebook on Friday App notes on the weekend […]
A simple brushless sensored motor driver for AVR Atmega
Davide Gironi has written an article detailing his brushless sensored motor driver for AVR Atmega: For this project, I’ve implemented a simple brushless sensored motor driver for AVR Atmega. The code i propose it’s not perfect, and can be improved, but for the needs i had it works. Using this library, the motor can be controlled in speed […]
A simple noise generator
F4GRX blogged about his simple noise generator project: After some talks on the Electrolab hackerspace Mailing list, I had the idea to try random number generators. I came across this idea after realizing that good “really random” numbers are of extreme importance for online security, as they are used in SSL, GPG, and lots of other […]
Razen PCB CAD tool update
rng posted an update on his Razen PCB CAD tool we posted previously: Razen is now in open beta for Windows, Mac and Linux. I received a bunch of useful suggestions from people testing the alpha versions, and have improved Razen significantly since I first posted it. If you’re interested in giving it a try, the latest […]
Building a small programmable power supply
Alex over at InsideGadgets has written an article detailing the build of his programmable power supply: A small programmable power supply with 4 digit segment display using an ATtiny84 to allow 3 programmable voltages and ability to adjust the voltage higher or lower. Output range is 0.3V to 12.5V.
Joystick controlled pan tilt kit
Bajdi writes: One of the things I bought is a small plastic pan tilt kit. I got it on Ebay. It didn’t come with the servos. But I still had some small Micro 9G servos that fit the kit. To try it out I hooked up the little servos to one of my Bajduinos. I […]
ZofzPCB 3D gerber viewer update
Zofz posted an update on his ZofzPCB gerber viewer we posted previously: ZofzPCB Gerber Viewer takes the Gerber file data from your CAD/CAM files along with a little additional information and transforms it into a 3D image with colours used to differentiate nets, customisable stackup dimensions and an Autopilot function that lets you sit back and enjoy the […]
#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 […]
Transistor tester project
Hemal Chevli blogged about his transistor tester project: It has mega-8 as the brain, lcd to show specs of the transistor like which pin is which, what type of transistor it is eg NPN,PNP, N-MOSFET,P-MOSFET, etc., many components can be tested like different types of transistor, diodes, resistors etc, the good thing about this is that […]
USB LCD Backpack PIC18F24J50 free PCB build
TasksOfOhm built a free USB LCD backpack PCB. This board controls LCDs with up to 16 interface pins at 3.3 volts or 5.0 volts. This includes common HD44780 character LCDs and larger graphical LCDs. Got it working. It wasn’t an electrical problem but a software one. I used the software from another built that was running the PIC with […]
OpenBench Logic Sniffer ported to Pipistrello LX45
mkarlsson ported the Open Bench Logic Sniffer code to run on Pipistrello LX45: FYI, I have ported the Demon 3.07 code to Pipistrello LX45 FPGA board with the following changes: 1) The sample buffer size is increased by a factor of 8 from 24kB to 192kB 2) The interface is changed to serial (Pipistrello uses a FTDI […]
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 […]
Self hosted toolchain: The MC HCK as SWD adapter
Simon Schubert writes, “I am happy to announce that we have a self-hosted toolchain: The MC HCK can now act as SWD debug adapter for other MC HCKs, without requiring any other external debug adapters or development boards.” The MC HCK (pronounced: “McHack” [mæk hæk]) is a small, cheap, and versatile ARM Cortex-M4 based microcontroller platform. […]
Web enabled switch using an Arduino
einball built a switch that turns the heater on to make the room comfy using an Arduino: As the walls are quite thick, it takes a while for the electric heater to heat the room. Afters about an hour the temperature reach comfortable levels. The solution was to built some kind of switch that turns the […]
Free PCB coupon via Facebook to 2 random commenters
Every Friday we give away some extra PCBs via Facebook. This post was announced on Facebook, and on Monday we’ll send coupon codes to two random commenters. More PCBs via Twitter on Tuesday and the blog every Sunday. Don’t forget there’s free PCBs three times every week: Free PCB Sunday. The classic. Every week, get […]
Week in (p)review September 13, 2013
Here’s a summary of major developments over the last week. Free PCB Friday is coming up soon. Another case for the ATX Breakout board bench power supply by Phenoptix Check out Mats’ TraId – Transistor type & pinout identifier in the project log forum Coming up: Free PCBs via Facebook on Friday App notes on […]
Diolan firmware update tool for PIC18F2550 used in USB IR Toy
Dobrica writes, “I’m in the process of setting up my HTPC, so I ordered USB IR Toy to be able to turn TV on without using remote control.” Result it fw_update for PIC 18F2550 which IR Toy uses , updated wiki page about IR Toy firmware update on Linux and comment on bug tracker. Hopefully, this will […]