Brian’s Beaglebone Black music box project: I would like to thank Miero for his hard work on the linux I2S driver for Beaglebone Black’s SOC without the driver this project would not exist. You can see the design in its enclosure here below and in the following video The design is essentially complete and tested as […]
Category Archives: project logs
LiFePO4 charger
Markus Gritsch shared his LiFePO4 charger project in the forum: Since I really like using LiFePO4 AA and AAA batteries in some of my projects, I finally gave in and built a dedicated charger for them. Previously I used a lab power supply to mimic the constant current/constant voltage charging curve, which worked also fine. But after […]
DIY 110v temperature controlled soldering station
Mike Doughty over at PCBSmoke shared his DIY 110v temperature controlled soldering station in the project log forum: This post shows how to build a do it yourself 110 volt soldering station. It is a step by step guide that shows how to convert a regular plug-in soldering iron into a temperature controlled unit. It is an […]
Universal soldering controller
SZ64 posted picture of his soldering controller PCB build in the project log forum: Hi sparkybg, You have indeed perish in labor ;-) Just say that you are well. I managed to finally all up and running as it should. Via the forum.
Simple pendulum tiltmeter
Jbeale shared his tiltmeter project in the forum: Apparently the most popular sensor for this purpose is an “electrolytic tilt sensor”, basically a bubble level with internal electrodes. These are not exactly consumer items. I tried building a simple pendulum tiltmeter using a split-photodiode, Optek OPR2100 (about $10 from Mouser) and LF411 opamp. The pendulum […]
R/C Aircraft lighting controller
Ezflyr shared his R/C Aircraft lighting controller in the project log forum. He writes: I’m an avid R/C modeler, and I’m just finishing up my latest ‘winter building’ project, a 150″ wingspan Douglas DC-3! I wanted to add a continuously flashing strobe light on the vertical stabilizer of the airplane, and remotely controlled Red (left) […]
Making an intelligent cap with Crowtail modules
Need an idea for a present? Gebera shares us a present he made for his Dad, an intelligent cap: It can be a great help to let my father know the time and have a rest if the UV ray is too high and be careful when come back late in night. With this cap, […]
Building a CC2500 to BLE adaptor
Don has been working on a CC2500 to BLE adaptor project, that is available on Github: Posting some details in response to questions about the current module. Everything for the CC2500 is on Github. Fish around here and you’ll also find some iOS and Pebble code. Sorry, nothing Android based. The RFDuino is programmed like […]
Programmable 8-character LCD module and digital voltmeter
A programmable 8-character LCD module and digital voltmeter project from Tuxgraphics: Our 3 digit LED digital voltmeter module has been quite successful over the years. This new LCD module is basically an advanced version with a lot more capabilities. You can power it with the same voltage source that your signal is derived from. You […]
UC3844 base motor speed controller
Dilshan Jayakody writes: UC3844 is popular current mode controller which is commonly found on DC-to-DC converter circuits and switch mode power supplies. This motor speed controller is also based on UC3844 and it is specifically design to drive 20V – 24V DC motors. In this given configuration UC3844 produces (approx.) 50kHz to 240kHz PWM output […]
SIM900 USB Communication using MCP2200
Here’s a simple USB interface to communicate with a SIM900 modem by Jesus Echavarria. He wrote a post on his blog detailing its assembly: Hi all! Here’s the new project where I’m working a couple of days. Since I develop the SIM900 module and test it, I don’t work with it. Also, I’ve got at […]
Shapeoko2 CNC Mill build log & review
Jeremy Blum’s review and build-log of the Shapeoko2: I bet you thought that I only had room in my heart for one at-home manufacturing technology! 3D Printing is still my first true manufacturing love, but I’m very excited to share that I’ve started experimenting with CNC milling, too, thanks to the fine folks at Inventables. They […]
Universal soldering controller
sparkybg shared his universal soldering controller in the project log forum: The intention was to build the most universal soldering controller I can think of. It can drive any low voltage (upto 24V) iron with thermocouple or resistive sensor, in series with the heater, or separate. Here is a short list of features: – power: […]
Testing/programming rig
Sjaak writes: I was working on a project of mine (Hakko T12 Soldering controller) and it needed a simple way of programming it. The PCB is designed for manufacturing and has no standard header. On the bottom the programming pins are brought out as testpoints… Via the project log forum.
DirtyPCB BeagleQ
HouseOfBeck shared his DirtyPCB BeagleQ in the project log forum: The BeagleQ is a wifi enabled wireless intelligent bbq smoker controller based on the BeagleBone Black controller. This device is designed to control a fan connected to the smoker’s input vent/damper. Using a temperature probe placed in the pit the controller can read the pit temperature and […]
ESP8266 Wifi information LCD
Renze shares his ESP8266 Wifi information LCD in the project log forum: This is a little project I did in about 2 hours. It uses an LCD display I got from an old ISDN phone and shows text sent to it over WiFi. The ESP8266 runs a webserver which shows a form that can be used to […]
ESP8266 relay board
renze shares his ESP8266 based relay-switch board in the project log forum: Functions – 2x relay output – DHT22 temperature and humidity sensor – GPIO header – On board 3.3 volt regulator Project info at RN+ site. The design files and firmware are available on GitHub.
DirtyPCBs silkscreen text size
sleemanj writes: I made some text on my pcbs really quite small, fully expecting it to be a miserable mess, but in fact it’s beautifully sharp. In the text sparks.gogo.co.nz shown below, the width of the lines in the characters is approx 6 mil (approx 0.15mm), this is a “Vector Font Size 4 with Normal […]
Embedded Linux System
hak8or was inspired by Henrik’s Embedded Linux system so he made his own: The repository is divided into two SOC’s, one being Atmel’s AT91SAM9N12 which is what the currently working board uses, and the other being Freescale’s I.MX223. Each SOC subdir contains schematics, board files, the required code modifications in the form of git patches to the […]
Lisa Native floppy emulation
Steve at Big Mess o’ Wires writes: Lisa floppy drive emulation with Floppy Emu is a success! Begone, evil rotational disk drives, with your failure-prone gummed-up mechanisms. The age of SD card Lisa floppy emulation is here! After a lot of tinkering, it’s now working on both the Lisa 2/5 and 2/10, and for both Lisa-format […]