Dan Maloney writes on Hackaday about Timothy Woo’s Reflowduino:
Face it — you want a reflow oven. Even the steadiest hands and best eyes only yield “meh” results with a manual iron on SMD boards, and forget about being able to scale up to production. But what controller should you use when you build your oven, and what features should it support? Don’t worry…
Dubbed the Reflowduino for obvious reasons, Timothy Woo’s Hackaday Prize entry has everything you need in a reflow oven controller, and a few things you never knew you needed.
Radomir Dopieralski has created handheld game console programmable with (Micro/Circuit)Python:
A small game console directly programmable in Python. I always wanted to make this, and after my work on #PewPew FeatherWing I finally decided that I’m ready.
The first version may be a bit of a stretch — I tried to make it as small as possible, fitting in the 5x5cm limit of PCB manufacturers, so that it will be cheap to make the PCBs. Using the cheap ST7735 TFT display, and a cheap ATSAMD21E chip. I also tried to put all the components on one side of the board, but failed with that — the power and reset switch had to go on the back, as well as the buzzer.
From Jeremy S. Cook on the Tindie blog:
Makernet Knob’s makes the point that “Rotary encoders are cool but hard to wire into your projects.” Having wired up a custom input device for my computer using an encoder, I can attest to both of these statements. In my case, it took me quite a bit of time simply to figure out how each encoder pin was used!
To help alleviate complicated wiring issues, this custom knob features a built-in I2C interface, which allows several (even hundereds) of knobs to be chained together without issue. Additionally, the top of the encoder can be depressed as a pushbutton, and it even has an RGB LED integrated inside of it to give you feedback right on the knob!
Sean Hodgins has a great tutorial on surface mount soldering:
I feel like surface mount soldering has a bad reputation. It can seem daunting to someone who has never tried it. Since a lot of my project involve using surface mount components, I thought it would be a good idea to make something to inspire people to try it out (without risking expensive components or their custom project).
Decide how you want to assemble your SMD Challenge Kit (re, the video) you can choose to use a soldering iron, or a reflow oven. They take about the same amount of time but using the soldering iron can be a little more challenging and doesn’t require a cheap toaster oven.
We are proud to be a sponsor of this Maker Faire Orlando soldering kit:
For the past six years at Maker Faire Orlando, members of FamiLab have taught attendees how to solder with a cool little Makey pin with 2 self-flashing LEDs. We’ve been asked for more advanced soldering training, and we responded with the addition of a PIC-microcontroller-based board twinkling several LEDs, and with a switch that can be used to change the LED display pattern.
We opted to design the board such that it can be used as a pendant on a necklace (lanyard) or as a keychain (especially for those of you who like large keychains). The design is a scalloped 2.7″ circle with LEDs on the outside circle, and a hole at the top for a keyring. Batteries are on the back of the board.
Early this year, the world of electronics saw something amazing. The RISC-V, the first Open Source microcontroller was implemented in silicon, and we got an Arduino-derived dev board in the form of the HiFive 1. The HiFive 1 is just a bit shy of mindblowing; it’s a very fast microcontroller that’s right up there with…
via A Smaller, Cheaper RISC V Board — Hackaday
LoFive RISC-V dev board designed by Michael Welling with KiCad is now on GroupGets:
LoFive is a small board based on the SiFive Freedom E310 open source SoC
- MCU – SiFive Freedom E310 (FE310) 32-bit RV32IMAC processor @ up to 320+ MHz (1.61 DMIPS/MHz)
- Storage – 128-Mbit SPI flash (ISSI IS25LP128)
- Expansion – 2x 14-pin headers with JTAG, GPIO, PWM, SPI, UART, 5V, 3.3V and GND
- Misc – 1x reset button, 16 MHz crystal
- Power Supply – 5V via pin 1 on header; Operating Voltage: 3.3 V and 1.8 V
- Dimensions – 38 x 18 mm (estimated)
- License – CERN Open Hardware Licence v1.2
The design files are available on GitHub:
From MakersBox on Instructables:
Fidget spinners are fun, and you can find one at about any check-out counter for just a few bucks these days, but what if you could build your own? And it had LEDs? And you could program it to say or show whatever you wanted? If that sounds geeky cool, THIS IS THE PROJECT FOR YOU.
I’ve always been interested in using blinking LEDs to get kids interested in programming. The most simple project with an Arduino microcontroller is to blink an LED on and off. Then you get them to see how fast an LED can blink before it looks like it is on continuously (about 12 millisecond intervals). Then you shake the LED back and forth and you can see it blink again! This phenomena is call “persistence of vision” (POV) and is how this project works. It can lead to discussions of both how the eye works and how incredibly fast computers are.
This project uses a programmable 8-bit microcontroller, eight LEDs, and a coin cell. It spins using a standard skateboard bearing, and uses a Hall-effect sensor and a magnet to determine rotation. It is made using beginner-friendly through-hole parts and can be programmed using the Arduino programming environment.
MakersBox has shared the board on OSH Park: